Material

material-design-dimens Default colors and dimens per Material Design guidelines and Android Design guidelines inside one library.
https://github.com/DmitryMalkovich/material-design-dimens
MaterialDesignLibrary This is a library with components of Android L to you use in android 4.0
https://github.com/navasmdc/MaterialDesignLibrary#flat-button
Carbon Material Design implementation for Android 2.1+. Realtime shadows, ripples, animations, SVGs and more.
https://github.com/ZieIony/Carbon
MaterialEverywhere Showcase of the new AppCompat 21, which includes new Material Theme, working in pre-21 devices.
https://github.com/antoniolg/MaterialEverywhere
MaterialTabs Custom Tabs with Material Design effects. It requires 14+ API and android support v7 (Toolbar)
https://github.com/neokree/MaterialTabs
material-ripple Android L Ripple effect wrapper for Views
https://github.com/balysv/material-ripple
RippleEffect Implementation of Ripple effect from Material Design for Android API 14+
https://github.com/traex/RippleEffect
LDrawer Android drawer icon with material design animation
https://github.com/ikimuhendis/LDrawer
material-design-icons Material Design icons by Google
https://github.com/google/material-design-icons
AndroidMaterialDesignToolbar Android Sample Project with Material Design and Toolbar. PROJECT IS NOT SUPPORTED!
https://github.com/tekinarslan/AndroidMaterialDesignToolbar
MaterialEditText EditText in Material Design
https://github.com/rengwuxian/MaterialEditText
material-menu Morphing Android menu, back, dismiss and check buttons
https://github.com/balysv/material-menu
material-dialogs Not even AppCompat uses Material theming for AlertDialogs on pre-Lollipop. This is a beautiful and easy solution.
https://github.com/afollestad/material-dialogs
MaterialNavigationDrawer Navigation Drawer Activity with material design style and simplified methods
https://github.com/neokree/MaterialNavigationDrawer
MaterialDialog An Android library for conveniently building Material Design Dialog in Android version 2.2 ~ L.
https://github.com/drakeet/MaterialDialog
materialish-progress A material style progress wheel compatible with 2.3
https://github.com/pnikosis/materialish-progress
MaterialList An Android library aimed to get the beautiful CardViews that Google shows at its official design specifications
https://github.com/dexafree/MaterialList
android-floating-action-button Floating Action Button for Android based on Material Design specification
https://github.com/futuresimple/android-floating-action-button
Android-Material-circular-button Animated Material circular button
https://github.com/glomadrian/Android-Material-circular-button
material-drawer DrawerLayout implementation for Material design apps
https://github.com/HeinrichReimer/material-drawer
snackbar Snackbar Android Library
https://github.com/nispok/snackbar
Android-DialogFragments Various DialogFragments for Android.
https://github.com/wada811/Android-DialogFragments
material-range-bar Android widget for selecting a range of values.
https://github.com/oli107/material-range-bar
CircularProgressView A Material style circular progress bar for Android
https://github.com/rahatarmanahmed/CircularProgressView
RippleDrawable A port of Ripple Effect from Android L to non L devices
https://github.com/ozodrukh/RippleDrawable
MaterialDrawer A simple take on creating a easy to use and fast material drawer implementation
https://github.com/mikepenz/MaterialDrawer
android-materialshadowninepatch Provides 9-patch based drop shadow for view elements. Works on API level 9 or later.
https://github.com/h6ah4i/android-materialshadowninepatch
SearchMenuAnim SearchMenuAnim
https://github.com/kongnanlive/SearchMenuAnim
AdvancedMaterialDrawer A Material Drawer implementation (Like gMail App)
https://github.com/madcyph3r/AdvancedMaterialDrawer
ZDepthShadowLayout Android - draw z-depth shadow of MaterialDesign
https://github.com/ShogoMizumoto/ZDepthShadowLayout
MaterialPowerMenu A demo of the power menu with Reveal and other animations
https://github.com/naman14/MaterialPowerMenu
MaterialViewPager A Material Design ViewPager easy to use library
https://github.com/florent37/MaterialViewPager
MaterialProgressBar A Material design ProgressBar with consistent appearance on Android 4.0+
https://github.com/DreaminginCodeZH/MaterialProgressBar
uberprogressview An android progress view developed after taking inspiration from Uber app.
https://github.com/ishan1604/uberprogressview
MaterialRatingBar Material Design RatingBar with better appearance.
https://github.com/DreaminginCodeZH/MaterialRatingBar
youtube-play-icon Material styled morphing play/pause drawable.
https://github.com/alxrm/youtube-play-icon

UI

android-ui Android UI library. Requires API level 14+
https://github.com/markushi/android-ui
GreenDroid GreenDroid is a development library for the Android platform. It makes UI developments easier and consistent through your applications.
https://github.com/cyrilmottier/GreenDroid
FlatUI CengaLabs - Android FlatUI Kit
https://github.com/eluleci/FlatUI
EffectiveAndroidUI Sample project created to show some of the best Android practices to work in the Android UI Layer. The UI layer of this project has been implemented using MVP or MVVM (without binding engine) to show how this patterns works. This project is used during the talk "EffectiveAndroidUI".
https://github.com/pedrovgs/EffectiveAndroidUI
ParallaxEverywhere Parallax everywhere is a library with alternative android widgets with parallax effects.
https://github.com/Narfss/ParallaxEverywhere
ShowcaseView Highlight the best bits of your app to users quickly, simply, and cool...ly
https://github.com/amlcurran/ShowcaseView
Spotlight Android Library that lights items for tutorials or walk-throughs etc... https://github.com/TakuSemba/Spotlight

TextView/EditText

html-textview TextView to display simple HTML content
https://github.com/SufficientlySecure/html-textview
SlantedTextView Android slanted TextView . 一个倾斜的TextView,适用于标签效果。
https://github.com/HeZaiJin/SlantedTextView
ReadMoreTextView A Custom TextView with trim text
https://github.com/borjabravo10/ReadMoreTextView
MaskFormatter MaskFormatter adds mask functionality to your EditText. It will prevent user from inserting not allowed signs, and format input as well.
https://github.com/AzimoLabs/MaskFormatter
AnimatedEditText Androids EditText that animates the typed text.
https://github.com/alphamu/AnimatedEditText
passwordview A Material Android password view that toggles password visibility via an eye icon.
https://github.com/lisawray/passwordview
PasswordEditText A simple extension to the standard Android EditText which shows an icon on the right side of the field and lets the user toggle the visibility of the password he puts in.
https://github.com/maksim88/PasswordEditText
HTextView Animation effects to TextView
https://github.com/hanks-zyh/HTextView
icarus-android Rich text editor for Android with full features. https://github.com/mr5/icarus-android
richeditor-android RichEditor for Android is a beautiful Rich Text WYSIWYG Editor for Android.
https://github.com/wasabeef/richeditor-android
Shimmer-android An Android TextView with a shimmering effect
https://github.com/RomainPiel/Shimmer-android
Titanic Android experiment showing a sinking TextView
https://github.com/RomainPiel/Titanic
emojicon A library to show emoji in TextView, EditText (like WhatsApp) for Android
https://github.com/rockerhieu/emojicon
android-autofittextview A TextView that automatically resizes text to fit perfectly within its bounds.
https://github.com/grantland/android-autofittextview
AutoFitTextView A TextView that automatically fit its font and line count based on its available size and content
https://github.com/AndroidDeveloperLB/AutoFitTextView
Android-RobotoTextView Implementation of a TextView and all its direct/indirect subclasses with native support for the Roboto fonts, includes the brand new Roboto Slab fonts.
https://github.com/johnkil/Android-RobotoTextView
SizeAdjustingTextView This is based on an open source autosizing textview for Android.
https://github.com/erchenger/SizeAdjustingTextView
SecretTextView A TextView that simulates the effect from the app Secret where the characters fade in/out at different speeds.
https://github.com/matthewrkula/SecretTextView
anytextview An extension of Android's TextView and EditText that let's you use the font of your choice
https://github.com/hanspeide/anytextview
android-formidable-validation Form validation and feedback library for Android. Provides .setText for more than just TextView and EditText widgets. Provides easy means to validate with dependencies.
https://github.com/coreform/android-formidable-validation
android-edittext-validator Android form edit text is an extension of EditText that brings data validation facilities to the edittext.
https://github.com/vekexasia/android-edittext-validator
chips-edittext-library Chips EditText, Token EditText, Bubble EditText, Spannable EditText and etc.. There are many names of this control. Here I develop easy to understand , modify and integrate Chips Edit Text widget for Android
https://github.com/kpbird/chips-edittext-library
FloatingLabel FloatingLabel Allows you to create a blow kind of EditText.
https://github.com/hardik-trivedi/FloatingLabel
AndroidFloatLabel Float Label Edit Texts for Android
https://github.com/weddingparty/AndroidFloatLabel
AndroidFloatLabel Library project with a custom view that implements the Float Label pattern
https://github.com/IanGClifton/AndroidFloatLabel
TokenAutoComplete Gmail style MultiAutoCompleteTextView for Android
https://github.com/splitwise/TokenAutoComplete
TextJustify-Android Android Text Full Jusiftication / Wrapping / Justify
https://github.com/bluejamesbond/TextJustify-Android
RoundedLetterView RoundedLetterView like the one in Android 5.0 Contacts app
https://github.com/pavlospt/RoundedLetterView
Android-SingleInputForm A single EditText instead of a classical form. Library that implements flavienlaurent's singleinputform https://github.com/HeinrichReimer/Android-SingleInputForm
BabushkaText A simpler way to style your TextViews
https://github.com/quiqueqs/BabushkaText
MatchView Include MatchTextView and MatchButton..Come..you will like it
https://github.com/Rogero0o/MatchView
ExpandableTextView Android's TextView that can expand/collapse like the Google Play's app description
https://github.com/Manabu-GT/ExpandableTextView
AccountAutoCompleteEditText Simple extension for account suggestion and auto completion.
https://github.com/KeithYokoma/AccountAutoCompleteEditText
AwesomeText A tool that facilitates working with Spans on TextViews or any extension of them (EditTexts, Buttons...).
https://github.com/JMPergar/AwesomeText
WaitingDots Small library that provides... bouncing dots. This feature is used in number of messaging apps (such as Hangouts or Messenger), and lately in Android TV (for example when connecting to Wifi).
https://github.com/tajchert/WaitingDots
CurrencyEditText A module designed to provide ease-of-use when using an EditText field for gathering currency information from a user
https://github.com/BlacKCaT27/CurrencyEditText
Android-Typeahead Awesome Android Typeahead library - User mention plugin, UI widget for auto complete user mention using the at sign (@) like Twitter or Facebook..
https://github.com/ArabAgile/android-typeahead
CircleTimerView Circle timer on Android platform
https://github.com/jiahuanyu/CircleTimerView
AlignTextView 字体对齐的textview
https://github.com/androiddevelop/AlignTextView
advanced-textview Advanced Android TextView
https://github.com/chiuki/advanced-textview
ParkedTextView A editable text with a constant text/placeholder for Android.
https://github.com/gotokatsuya/ParkedTextView
SimpleLinkableText Simple way to create linked text, such as @username or #hashtag, in Android TextView and EditText.
https://github.com/apradanas/simple-linkable-text
material-code-input A material style input for codes
https://github.com/glomadrian/material-code-input
BubbleTextView Android Bubble View
https://github.com/dupengtao/BubbleTextView
PathEffectTextView PathEffectTextView
https://github.com/dkmeteor/PathEffectTextView
AutosizeEditText AutosizeEditText for Android is an extension of native EditText that offer a smooth auto scale text size.
https://github.com/txusballesteros/AutosizeEditText
TextSurface A little animation framework which could help you to show message in a nice looking way.
https://github.com/elevenetc/TextSurface
EmailAutoCompleteTextView An AutoCompleteTextView with builtin Adapter with the emails in the device. It handles Android Marshmallow Runtime Permissions automatically.
https://github.com/tasomaniac/EmailAutoCompleteTextView
TextViewForFullHtml TextViewForFullHtml是对原生TextView解析Html格式文本的增强。
https://github.com/xuyisheng/TextViewForFullHtml
PlacesAutocompleteTextView A TextView for autocompleting addresses using the Google Maps Places API
https://github.com/seatgeek/android-PlacesAutocompleteTextView
BiuEditText biu，biu，一个有趣的EditText
https://github.com/xujinyang/BiuEditText
AnimTextView AnimTextView
https://github.com/z56402344/AnimTextView
Masked-Edittext Android library contain custom realisation of EditText component for masking and formatting input text
https://github.com/pinball83/Masked-Edittext
KerningViews Provides a set of views which allows to adjust the spacing between the characters in the text of that view, also known as Kerning effect. https://github.com/aritraroy/KerningViews
SectionedRecyclerViewAdapter An Adapter that allows a RecyclerView to be split into Sections with headers and/or footers. Each Section can have its state(Loading/Loaded/Failed) controlled individually.
https://github.com/luizgrp/SectionedRecyclerViewAdapter
android-ago An Android TextView that always displays an auto refreshing relative time span with respect to a reference time
https://github.com/curioustechizen/android-ago
SuperTextView a super textview for android
https://github.com/lygttpod/SuperTextView
input-mask-android The library allows to format user input on the fly according to the provided mask and to extract valueable characters.
https://github.com/RedMadRobot/input-mask-android
NumberAnimTextView 数字增加动画的 TextView
https://github.com/Bakumon/NumberAnimTextView
PinchZoomTextView A TextView library that allows the user to increase/decrease font size with a two finger gesture by the user.
https://github.com/androidessence/PinchZoomTextView
html-builder Build valid HTML for Android TextView
https://github.com/jrummyapps/html-builder
AvatarLabelView 一个可配置的迷你版轻量级 Label 辅助类，支持多种配置效果。
https://github.com/yanbober/AvatarLabelView
LogcatTextView A simple view to see logcat in your app
https://github.com/munix/LogcatTextView
MarqueeViewLibrary 一个帮您快速实现跑马灯效果的library
https://github.com/gongwen/MarqueeViewLibrary
FadingTextView A textview that changes its content automatically every few seconds
https://github.com/rosenpin/FadingTextView
WaitingDots Small library that provides... bouncing dots
https://github.com/tajchert/WaitingDots
CodeView Android Code Highlighter
https://github.com/tiagohm/CodeView
SlantedTextView Android slanted TextView
https://github.com/HeZaiJin/SlantedTextView

ImageView

FrescoImageViewer Android full screen image viewer for Fresco library supporting "pinch to zoom" and "swipe to dismiss" gestures http://stfalcon.com
https://github.com/stfalcon-studio/FrescoImageViewer
AndroidGradientImageView AndroidGradientImageView is a simple imageview which overlays gradient on its content.
https://github.com/skyfe79/AndroidGradientImageView
subsampling-scale-image-view Highly configurable, easily extendable view with pan and zoom gestures for displaying huge images without loss of detail. Perfect for photo galleries, maps, building plans etc.
https://github.com/davemorrissey/subsampling-scale-image-view
BadgedImageview BadgedImageview allow you show a badge into a Imageview.
https://github.com/yesidlazaro/BadgedImageview
PhotoView Implementation of ImageView for Android that supports zooming, by various touch gestures.
https://github.com/chrisbanes/PhotoView
PhotoView图片浏览缩放控件
https://github.com/bm-x/PhotoView
android-smart-image-view Android ImageView replacement which allows image loading from URLs or contact address book, with caching
https://github.com/loopj/android-smart-image-view
TouchImageView Adds touch functionality to Android ImageView.
https://github.com/MikeOrtiz/TouchImageView
CircleImageView A fast circular ImageView perfect for profile images.
https://github.com/hdodenhof/CircleImageView
gesture-imageview This is a simple Android View class which provides basic pinch and zoom capability for images.
https://github.com/jasonpolites/gesture-imageview
android-shape-imageview Custom shaped android imageview components
https://github.com/siyamed/android-shape-imageview
AndroidImageCrop How select and crop image on Android
https://github.com/lorensiuswlt/AndroidImageCrop
GifImageView Android ImageView that handles animated GIF images
https://github.com/felipecsl/GifImageView
cropper Android widget for cropping and rotating an image.
https://github.com/edmodo/cropper
ImageViewZoom Android ImageView widget with zoom and pan capabilities
https://github.com/sephiroth74/ImageViewZoom
CircularImageView Custom view for circular images in Android while maintaining the best draw performance
https://github.com/Pkmmte/CircularImageView
CircularImageView Create circular image view in android
https://github.com/lopspower/CircularImageView
android-crop Android library project for cropping images
https://github.com/jdamcd/android-crop
cropimage Replacement for deprecated official Android crop image function
https://github.com/biokys/cropimage
android-cropimageCropImage Activity from Gallery.apk packaged as a reusable Android library (4.0 and up).
https://github.com/lvillani/android-cropimage
android-gpuimage Android filters based on OpenGL (idea from GPUImage for iOS)
https://github.com/CyberAgent/android-gpuimage
gif-movie-view Android View widget for displaying GIF animations.
https://github.com/sbakhtiarov/gif-movie-view
WaveDrawable Drawable animation inspired by Tinder.
https://github.com/Alexrs95/WaveDrawable
DrawerArrowDrawable Visual back-port of the rotating drawer-to-arrow drawable from Android L
https://github.com/ChrisRenke/DrawerArrowDrawable
TextDrawable This light-weight library provides images with letter/text like the Gmail app. It extends the Drawable class thus can be used with existing/custom/network ImageView classes. Also included is a fluent interface for creating drawables and a customizable ColorGenerator.
https://github.com/amulyakhare/TextDrawable
SelectableRoundedImageView Android ImageView that supports different radiuses on each corner. It also supports oval(and circle) shape and border. This would be especially useful for using inside CardView which should be rounded only top left and top right corners(Don't forget to call setPreventCornerOverlap(false) on your cardview).
https://github.com/pungrue26/SelectableRoundedImageView
avatar-android Rounded and Squared Avatar for Android Applications
https://github.com/Pedroafa/avatar-android
ByakuGallery ByakuGallery is an open source Android library that allows the visualization of large images with gesture capabilities. This lib is based on AOSP Camera2.
https://github.com/diegocarloslima/ByakuGallery
DexMovingImageView DMIV aims to provide a flexible and customizable instrument for automated images moving on display. It provides scroll, gyroscope or time based moving. But you can create your own evaluator.
https://github.com/dexlex/DexMovingImageView
SimpleTagImageView ImageView with a tag in android. So it's a ImageView.
https://github.com/wujingchao/SimpleTagImageView
CropImageView Widget allows you crop from whatever side in an ImageView. Currently Android only supports centerCrop type of cropping
https://github.com/cesards/CropImageView
MovingImageView Custom ImageView for moving image around the screen (Android)
https://github.com/AlbertGrobas/MovingImageView
PolygonImageView Custom ImageView for android with polygon shape (Android)
https://github.com/AlbertGrobas/PolygonImageView
BitmapMerger Play with bitmaps
https://github.com/cooltechworks/BitmapMerger
FlickableView Flickable ImageView for Android. It's like a view of twitter's detail image.
https://github.com/gotokatsuya/FlickableView
ImageGallery A gallery used to host an array of images
https://github.com/lawloretienne/ImageGallery
GestureViews ImageView and FrameLayout with gestures control and position animation.
https://github.com/alexvasilkov/GestureViews
MusicCoverView ImageView that 'morphs' into a circle shape and can rotates. Useful to be used as album cover in Music apps.
https://github.com/andremion/Music-Cover-View
BigImageViewer Big image viewer supporting pan and zoom, with very little memory usage and full featured image loading choices. Powered by Subsampling Scale Image View, Fresco, Glide, and Picasso.
https://github.com/Piasy/BigImageViewer
Crescento Android library that adds a curve at the below of image views and relative layouts. CrescentoImageView and CrescentoContainer are the image view and relative layout respectively. You can change the radius of curve with attribute:curvature.
https://github.com/developer-shivam/Crescento
CaptchaImageView Custom ImageView to generate captcha image.
https://github.com/jineshfrancs/CaptchaImageView
DragPhotoView A photoView to scale image and finish activity，高仿微信可拖拽返回PhotoView
https://github.com/githubwing/DragPhotoView
ViewEffects Apply custom effects on view backgrounds
https://github.com/mirrajabi/ViewEffects

Button

circular-progress-button Android Circular Progress Button
https://github.com/dmytrodanylyk/circular-progress-button
android-process-button Android Buttons With Built-in Progress Meters.
https://github.com/dmytrodanylyk/android-process-button
android-circlebutton Circle button widget for Android
https://github.com/markushi/android-circlebutton
android-flat-button FButton - a flat button library for Android
https://github.com/hoang8f/android-flat-button
FloatingActionButton Android Google+ like floating action button
https://github.com/makovkastar/FloatingActionButton
ExpandableButtonMenu An Android library for an expandable button menu
https://github.com/lemonlabs/ExpandableButtonMenu
fancybuttons An Android library to easily create fancy buttons without the need of drawable files.
https://github.com/medyo/fancybuttons
Android-Bootstrap Bootstrap style buttons with Font Awesome
https://github.com/Bearded-Hen/Android-Bootstrap
SwitchButton SwitchButton
https://github.com/kyleduo/SwitchButton
SwitchButton SwitchButton
https://github.com/xiaopansky/SwitchButton
ToggleButton ToggleButton Widget For Android Dev
https://github.com/zcweng/ToggleButton
FabButton Android Floating ActionButton with a progress indicator ring
https://github.com/ckurtm/FabButton
SlideSwitch A button that you can slide on or off
https://github.com/Leaking/SlideSwitch
easyloadingbtn This is a Material Design loading button
https://github.com/DevinShine/easyloadingbtn
hkm-progress-button Base on android-process-button this is the advanced version of the android-process-button.
https://github.com/jjhesk/hkm-progress-button
SubmitDemo comtomize view submit button which you use for submit operation or download operation and so on.
https://github.com/tuesda/SubmitDemo
PlayPauseButton PlayPauseButton
https://github.com/recruit-lifestyle/PlayPauseButton
ArrowDownloadButton A download button with pretty cool animation
https://github.com/fenjuly/ArrowDownloadButton
FABProgressCircle Material progress circle around any FloatingActionButton. 100% Guidelines.
https://github.com/JorgeCastilloPrz/FABProgressCircle
ShineButton This is a UI lib for Android. Effects like shining.
https://github.com/ChadCSong/ShineButton
RaiflatButton A raised button that lowers down to 0dp of elevation
https://github.com/rubensousa/RaiflatButton
AnimShopButton A shopping cart button with a telescopic displacement rotation animation ...一个带伸缩位移旋转动画的购物车按钮
https://github.com/mcxtzhang/AnimShopButton
Android-SwitchIcon Google launcher-style implementation of switch (enable/disable) icon
https://github.com/zagum/Android-SwitchIcon
iOS-SwitchView A lightweight iOS switch view style for Android https://github.com/luongvo/iOS-SwitchView

CheckBox

AnimCheckBox AnimCheckBox
https://github.com/lguipeng/AnimCheckBox

Progressbar/Progress View

AwesomeProgressbar 支持左右两边同时滚动的进度条
https://github.com/alex5241/AwesomeProgressbar
BounceLoadingView 模仿饿了么加载效果
https://github.com/niniloveyou/BounceLoadingView
GradeProgressView a progress view used to grade mobiles phone
https://github.com/niniloveyou/GradeProgressView
SmileyLoadingView A custom loading view, just like alipay
https://github.com/andyxialm/SmileyLoadingView
RingProgress a circle progress bar with effect
https://github.com/ldoublem/RingProgress
SlackLoadingView Imitate Slack loading animation.
https://github.com/JeasonWong/SlackLoadingView
LoadingView a simple lodingview for android with animation
https://github.com/ldoublem/LoadingView
BezierLoadingView A cool loading view with Bezier and a smooth circular motion https://github.com/JeasonWong/BezierLoadingView
CircleProgressBar A circular android ProgressBar library which extends ProgressBar, It has both solid and line two styles. Besides, progress value can be freely customized.
https://github.com/dinuscxj/CircleProgressBar
ArcProgressStackView Present your progress bars in arc mode with information and total control.
https://github.com/GIGAMOLE/ArcProgressStackView
ArcProgressStackView Present your progress bars in arc mode with information and total control.
https://github.com/DevLight-Mobile-Agency/ArcProgressStackView
KProgressHUD An implement of ProgressHUD for Android, similar to MBProgressHUD, SVProgressHUD for iOS.
https://github.com/Kaopiz/KProgressHUD
SmoothProgressBar A small Android library allowing you to have a smooth and customizable horizontal indeterminate ProgressBar
https://github.com/castorflex/SmoothProgressBar
ACProgressLite A lightweight Android library to display customizable progressbar like iOS MBProgressHUD.
https://github.com/Cloudist/ACProgressLite
NumberProgressBar A beautiful, slim Android ProgressBar.
https://github.com/daimajia/NumberProgressBar
android-HoloCircularProgressBar Holo Circular ProgressBar
https://github.com/passsy/android-HoloCircularProgressBar
android-square-progressbar An android library to display a progressbar that goes around an image.
https://github.com/mrwonderman/android-square-progressbar
ProgressPieView Android library for showing progress in a highly customizable pie.
https://github.com/FilipPudak/ProgressPieView
GoogleProgressBar Android library to display progress like google does in some of his services.
https://github.com/jpardogo/GoogleProgressBar
ProgressWheel A progress wheel for android, intended for use instead of the standard progress bar.
https://github.com/Todd-Davies/ProgressWheel
RefreshActionItem Android - An action bar item which acts both as a refresh button and as a progress indicator
https://github.com/ManuelPeinado/RefreshActionItem
CircleProgress CircleProgress, DonutProgress, ArcProgress
https://github.com/lzyzsd/CircleProgress
WaveView A wave view of android,can be used as progress bar.
https://github.com/john990/WaveView
WaveView waveview for android
https://github.com/gelitenight/WaveView
water-wave-progress 水波按进度上升，带环形进度条
https://github.com/Modificator/water-wave-progress
InfiniteIndicator This lib can be used for viewpager infinite loop with indicator easily.
https://github.com/lightSky/InfiniteIndicator
Android-RoundCornerProgressBar Round Corner Progress Bar Library for Android
https://github.com/akexorcist/Android-RoundCornerProgressBar
CircleProgress A circle progress animation view on Android
https://github.com/Fichardu/CircleProgress
MaterialLoadingProgressBar MaterialLoadingProgressBar provide a styled ProgressBar which looks like SwipeRefreshLayout's loading indicator(support-v4 v21+)
https://github.com/lsjwzh/MaterialLoadingProgressBar
WheelIndicatorView A 'Google Fit' like activity indicator for Android
https://github.com/dlazaro66/WheelIndicatorView
MaterialProgressBar Material design ProgressBar with consistent appearance
https://github.com/DreaminginCodeZH/MaterialProgressBar
RopeProgressBar Android ProgressBar that "bends" under its own weight. Inspired by http://drbl.in/nwih
https://github.com/cdeange/RopeProgressBar
DownloadProgressBar Android progress bar with cool animation, inspired by : https://dribbble.com/shots/2012292-Download-Animation
https://github.com/panwrona/DownloadProgressBar
AnimatedCircleLoadingView An animated circle loading view
https://github.com/jlmd/AnimatedCircleLoadingView
SpinnerLoader A loader that measures up Material Design
https://github.com/fenjuly/SpinnerLoader
AndroidFillableLoaders Android fillable progress view working with SVG paths. This is a nice option too if you want to create an interesting branding logo for your app. Based on the iOS project: https://github.com/poolqf/FillableLoaders
https://github.com/JorgeCastilloPrz/AndroidFillableLoaders
WhorlView Progressbar with whorl style
https://github.com/Kyson/WhorlView
ColoringLoading This project provide Coloring Loading View for Android. And this project is not using the image file!
https://github.com/recruit-lifestyle/ColoringLoading
RubberIndicator A rubber indicator for ViewPager
https://github.com/LyndonChin/AndroidRubberIndicator
TaoBaoProgressBar 一个模仿淘宝秒杀商品页面的进度条
https://github.com/liuhuibin/TaoBaoProgressBar
AVLoadingIndicatorView AVLoadingIndicatorView is a collection of nice loading animations for Android.
https://github.com/81813780/AVLoadingIndicatorView
MaskProgressView Yet another android custom progress view for your music player
https://github.com/iammert/MaskProgressView
DelayedProgress ProgressDialog that waits a minimum time to be dismissed before showing. Once visible, the ProgressDialog will be visible for a minimum amount of time to avoid "flashes" in the UI. https://github.com/tasomaniac/DelayedProgress
circular-slider-android Circular Slider is a custom-built Android View used for choosing numbers. It works similarly to the regular slider control (SeekBar), just goes around in a circular fashion - simple enough. Note that the thumb scroller (the thing you drag around) can be either a solid-color circle or a custom drawable (like a PNG image).
https://github.com/milosmns/circular-slider-android
Loading Progress A highly configurable library to do loading progress with animated balls
https://github.com/glomadrian/loading-balls
Dilating Dots Progress Bar An animated progress indicator
https://github.com/JustZak/DilatingDotsProgressBar
ColorArcProgressBar A customizable circular progressbar, which can achieve the effect of the QQ health's arc progress and dashboard.
https://github.com/Shinelw/ColorArcProgressBar
SunBaby 萌萌哒太阳宝宝主题的LoadingView
https://github.com/Hitomis/SunBaby
AndroidSpinKit android 加载动画合集
https://github.com/ybq/AndroidSpinKit
GifLoadingView GifLoadingView
https://github.com/Rogero0o/GifLoadingView
LoadingDrawable some android loading drawable, can be combined with any View as the loading View and Progressbar, and is especially suitable for the loading animation of the RecyclerRefreshLayout.
https://github.com/dinuscxj/LoadingDrawable
LikeSinaSportProgress 仿新浪体育客户端的进度条
https://github.com/YangShaoXiong/LikeSinaSportProgress
SquareLoading A square animated loader.
https://github.com/yuweiguocn/SquareLoading
StateProgressBar Android library to realize the various states and transitions in a ProgressBar.
https://github.com/kofigyan/StateProgressBar
GALeafLoading The project implements the following animation
https://github.com/Ajian-studio/GALeafLoading
GADownloading GADownloading
https://github.com/Ajian-studio/GADownloading
GABottleLoading Bezier storm（贝塞尔风暴）
https://github.com/Ajian-studio/GABottleLoading

Space-Navigation-View Space Navigation is a library allowing easily integrate fully customizable Google Spaces like navigation to your app.
https://github.com/armcha/Space-Navigation-View
LuseenBottomNavigation BottomNavigationView Designed according Google guideLine https://github.com/armcha/LuseenBottomNavigation
Material-BottomNavigation BottomNavigation component inspired by the Google Material Design Guidelines https://github.com/sephiroth74/Material-BottomNavigation
BoomMenu A menu which can ... BOOM!
https://github.com/Nightonke/BoomMenu
SlidingMenu SlidingMenu is an Open Source Android library that allows developers to easily create applications with sliding menus like those made popular in the Google+, YouTube, and Facebook apps. Feel free to use it all you want in your Android apps provided that you cite this project and include the license in your app.
https://github.com/jfeinstein10/SlidingMenu
android-menudrawer A slide-out menu implementation, which allows users to navigate between views in your app.
https://github.com/SimonVT/android-menudrawer
ArcMenu An android custom view which looks like the menu in Path 2.0 (for iOS).
https://github.com/daCapricorn/ArcMenu
RibbonMenu Navigation menu for Android (based off Google+ app)
https://github.com/darvds/RibbonMenu
CircularFloatingActionMenu an animated circular menu for Android
https://github.com/oguzbilgener/CircularFloatingActionMenu
ActionsContentView ActionsContentView is an standalone library implements actions/content swiping view (AKA Side Navigation UI Pattern, AKA Facebook side menu). The library doesn't use any specific code introduced in new Android SDK versions. This allows develop an application with an action/content swiping view for every version of Android from 2.2 and up.
https://github.com/StevenRudenko/ActionsContentView
Android-NewPopupMenu Android-NewPopupMenu is an android library to create popup menu with GoogleMusic app-like style.
https://github.com/u1aryz/Android-NewPopupMenu
android-floating-action-menu Floating Action Menu for Android. Inspired by the Google Plus floating menu.
https://github.com/sephiroth74/android-floating-action-menu
Android-CircleMenu Menu with items on a rotating circle
https://github.com/szugyi/Android-CircleMenu
Android Wheel Menu Simple and easy to use circular menu widget for Android.
https://github.com/anupcowkur/Android-Wheel-Menu
android-satellite-menu Android Satellite Menu
https://github.com/siyamed/android-satellite-menu
SideNavigation Implementation of "SIde Navigation" or "Fly-in app menu" pattern for Android (based on Google+ app)
https://github.com/johnkil/SideNavigation
AndroidResideMenu The idea of ResideMenu is from Dribbble 1 and 2. It has come true and run in iOS devices. iOS ResideMenu This project is the RefsideMenu Android version. The visual effect is partly referred to iOS version of ResideMenu. And thanks to the authors for the above idea and contribution.
https://github.com/SpecialCyCi/AndroidResideMenu
GoogleNavigationDrawerMenu Android Library for a DrawerLayout similar to the one in Google Apps
https://github.com/Arasthel/GoogleNavigationDrawerMenu
simple-side-drawer Simple library which enable you to add a drawer(slide-out) navigation to your android application
https://github.com/adamrocker/simple-side-drawer
BlurNavigationDrawer Android - Blur Navigation Drawer like Etsy app.
https://github.com/charbgr/BlurNavigationDrawer
ActionSheetForAndroid IOS UIActionSheet in Android
https://github.com/baoyongzhang/ActionSheetForAndroid
BottomSheet One way to present a set of actions to a user is with bottom sheets, a sheet of paper that slides up from the bottom edge of the screen. Bottom sheets offer flexibility in the display of clear and simple actions that do not need explanation.
https://github.com/soarcn/BottomSheet
Context-Menu.Android Context-Menu.Android
https://github.com/Yalantis/Context-Menu.Android
Side-Menu.Android Side-Menu.Android
https://github.com/Yalantis/Side-Menu.Android
Android-CircleMenu 自定义ViewGroup实现的圆形旋转菜单，支持跟随手指旋转以及快速旋转。图标请勿商用。
https://github.com/hongyangAndroid/Android-CircleMenu
AndroidPullMenu An Android Library that allows users to pull down a menu and select different actions. It can be implemented inside ScrollView, GridView, ListView.
https://github.com/ShkurtiA/AndroidPullMenu
FilterMenu An implemention of Filter Menu concept for android
https://github.com/linroid/FilterMenu
OverlayMenu Android Overlay Menu
https://github.com/sephiroth74/OverlayMenu
MultiCardMenu A multicard menu that can open and close with animation on android
https://github.com/wujingchao/MultiCardMenu
DropDownMenu DropDownMenu for Android,Filter the list based on multiple condition.
https://github.com/JayFang1993/DropDownMenu
Folder-ResideMenu An extension of ResideMenu
https://github.com/dkmeteor/Folder-ResideMenu
SlideBottomPanel 底部划动菜单，滑动时背景图透明度渐变，支持嵌套 LiewView 或 ScrollView
https://github.com/kingideayou/SlideBottomPanel
CustomMenu CustomMenu quickly realize about the menu
https://github.com/flyfei/CustomMenu
BottomSheet BottomSheet style dialogs for Android
https://github.com/Kennyc1012/BottomSheet
FlowingDrawer swipe right to display drawer with flowing effects.
https://github.com/mxn21/FlowingDrawer
Metaball-Menu A menu consisting of icons (ImageViews) and metaball bouncing selection to give a blob effect. Inspired by Material design
https://github.com/melvinjlobo/MetaballMenu
TapBarMenu Simple library that helps creating a "Tap Bar" menu layout.
https://github.com/michaldrabik/TapBarMenu
FloatingNavigationView A Floating Action Button that shows an anchored Navigation View.
https://github.com/andremion/Floating-Navigation-View
FantasySlide 一个 DrawerLayout 的扩展,具有帅气的动画与创新的交互。一次手势完成滑出侧边栏与选择菜单。
https://github.com/mzule/FantasySlide
FragNav An Android library for managing multiple stacks of fragments
https://github.com/ncapdevi/FragNav
hover A floating menu library for Android.
https://github.com/google/hover

Dialog

QustomDialog a quick custom android dialog project
https://github.com/danoz73/QustomDialog
Android-RateThisApp Android library to show "Rate this app" dialog
https://github.com/kskkbys/Android-RateThisApp
AndroidSliderPreference Android library that allows applications to add dialog-based slider widgets to their settings
https://github.com/jayschwa/AndroidSliderPreference
L-Dialogs A small library replicating the new dialogs in android L.
https://github.com/lewisjdeane/L-Dialogs
LicensesDialog LicensesDialog is an open source library to display licenses of third-party libraries in an Android app.
https://github.com/PSDev/LicensesDialog
android-styled-dialogs A simple library for styling Android dialogs in the Holo theme. It also removes boilerplate code for displaying simple dialogs.
https://github.com/inmite/android-styled-dialogs
PostOffice This is a library for easily constructing Holo and Material Design Dialogs.
https://github.com/r0adkll/PostOffice
sweet-alert-dialog Android版的SweetAlert，清新文艺，快意灵动的甜心弹框
https://github.com/pedant/sweet-alert-dialog
BlurDialogFragment Library project to display DialogFragment with a blur effect.
https://github.com/tvbarthel/BlurDialogFragment
dialogplus Simple,easy dialog for android
https://github.com/orhanobut/dialogplus
spots-dialog Android AlertDialog with mowing dots progress indicator
https://github.com/d-max/spots-dialog
search-dialog An awesome and customizable search dialog with built-in search options.
https://github.com/mirrajabi/search-dialog

ListView/ScrollView

CommonPullToRefresh Android widget with pull to refresh for all the views,and support loadMore for ListView , RecyclerView, GridView and SwipeRefreshLayout.
https://github.com/Chanven/CommonPullToRefresh
pinned-section-listview Easy to use ListView with pinned sections for Android.
https://github.com/beworker/pinned-section-listview
PullToRefresh-ListView A generic, customizable, open source Android ListView implementation that has 'Pull to Refresh' functionality.
https://github.com/erikwt/PullToRefresh-ListView
FlabbyListView Android library to display a ListView whose cells are not rigid but flabby and react to ListView scroll.
https://github.com/jpardogo/FlabbyListView
XListView-Android ListView supports pull refresh and pull up to load more feature.
https://github.com/Maxwin-z/XListView-Android
PinterestListView Pinterest style ListView for Android
https://github.com/vladexologija/PinterestListView
android-pulltorefresh-and-loadmore android custom listview,with interaction pattern load more and pull to refresh to load data dinamically
https://github.com/shontauro/android-pulltorefresh-and-loadmore
PinnedHeaderListView A ListView with pinned section headers for Android
https://github.com/JimiSmith/PinnedHeaderListView
ParallaxScroll Parallax ScrollView and ListView for Android
https://github.com/nirhart/ParallaxScroll
Android-HorizontalListView HorizontalListView is an Android ListView widget which scrolls in a horizontal manner (in contrast with the SDK-provided ListView which scrolls vertically).
https://github.com/MeetMe/Android-HorizontalListView
LinearListView Android library that allows you to bind a LinearLayout with a ListAdapter.
https://github.com/frankiesardo/LinearListView
ParallaxListView A Android ListView Demo with a parallax effect header like Path.
https://github.com/Gnod/ParallaxListView
PagedHeadListView Android boosted ListView supporting paginated header with a new material page indicator.
https://github.com/JorgeCastilloPrz/PagedHeadListView
PullZoomView An Android custom ListView and ScrollView with pull to zoom-in.
https://github.com/Frank-Zhu/PullZoomView
HeaderListView Android ListView with sticky headers
https://github.com/applidium/HeaderListView
ListviewFilter Awesome Listview filter functionality in Android.
https://github.com/bhavyahmehta/ListviewFilter
android-accordion-view Simple ListView based Android AccordionView
https://github.com/hamsterready/android-accordion-view
DragNDropList An easy to use Drag & Drop List for Android. Direct replacement of the android ListView.
https://github.com/terlici/DragNDropList
QuickReturn Android ListView that implements the QuickReturn UI pattern. Written from scratch with focus on performance.
https://github.com/felipecsl/QuickReturn
Android-HorizontalListView HorizontalListView is an Android ListView widget which scrolls in a horizontal manner
https://github.com/MeetMe/Android-HorizontalListView
ZrcListView 一个顺滑又漂亮的Android下拉刷新与加载更多列表组件。
https://github.com/zarics/ZrcListView
android-swipelistview An Android List View implementation with support for drawable cells and many other swipe related features
https://github.com/47deg/android-swipelistview
android-pulltorefresh This project aims to provide a reusable pull to refresh widget for Android.
https://github.com/johannilsson/android-pulltorefresh
StickyListHeaders An android library for section headers that stick to the top
https://github.com/emilsjolander/StickyListHeaders
LazyList Lazy load of images in Android
https://github.com/thest1/LazyList
FloatingGroupExpandableListView An open source Android library that provides a floating group view at the top of the ExpandableListView
https://github.com/diegocarloslima/FloatingGroupExpandableListView
PullSeparateListView 到顶部或底部时拉动，item分离效果
https://github.com/chiemy/PullSeparateListView
Android-SlideExpandableListView A better ExpandableListView, with animated expandable views for each list item
https://github.com/tjerkw/Android-SlideExpandableListView
HorizontalVariableListView Horizontal list view for Android which allows variable items widths
https://github.com/sephiroth74/HorizontalVariableListView
ListBuddies Android library to achieve in an easy way, the behaviour of the home page in the Expedia app, with a pair of auto-scroll circular parallax ListViews.
https://github.com/jpardogo/ListBuddies
Android-Tiling-ScrollView A tiling scrollview to display large picture (similar to iOS "CATiledLayer")
https://github.com/ened/Android-Tiling-ScrollView
PullScrollView 1.仿照新浪微博Android客户端个人中心的ScrollView，下拉背景伸缩回弹效果。 2.ScrollView仿IOS回弹效果。
https://github.com/MarkMjw/PullScrollView
StickyScrollViewItems A small android library for tagging views inside a ScrollView as "sticky" making them stick to the top of the scroll container until a new sticky view comes and takes it's place
https://github.com/emilsjolander/StickyScrollViewItems
Discrollview Scroll + discover = DiscrollView
https://github.com/flavienlaurent/discrollview
SwipeMenuListView SwipeMenuListView
https://github.com/baoyongzhang/SwipeMenuListView
Android-ObservableScrollView Android library to observe scroll events on scrollable views.
https://github.com/ksoichiro/Android-ObservableScrollView
Pull-to-Refresh.Rentals-Android This project aims to provide a simple and customizable pull to refresh implementation. Made in Yalantis
https://github.com/Yalantis/Pull-to-Refresh.Rentals-Android
StikkyHeader This is a very simple library for Android that allows you to stick an header to a scrollable view and easly apply animation to it
https://github.com/carlonzo/StikkyHeader
quickscroll Bringing extended scrolling features to Android's native ListView and ExpandableListView.
https://github.com/andraskindler/quickscroll
FilterSelectorListView FilterSelectorListView is useful for making multiple selection with see selection on the top of ListView.
https://github.com/pchauhan/FilterSelectorListView
Animated Expanding ListView Animated Expanding ListView provides a fancy animation on expanding or collapsing the content of a listview item.
https://github.com/LeonardoCardoso/Animated-Expanding-ListView
FanLayoutManager Using Fan Layout Manager you can implement the horizontal list, the items of which move like fan blades https://www.cleveroad.com
https://github.com/Cleveroad/FanLayoutManager

GridView

two-way-gridview An Android GridView that can be configured to scroll horizontally or vertically
https://github.com/jess-anders/two-way-gridview
AsymmetricGridView Android ListView that mimics a GridView with asymmetric items. Supports items with row span and column span
https://github.com/felipecsl/AsymmetricGridView
AndroidCoolDragAndDropGridView An example of a gridview with various column span items and drag and drop support like Google keep has
https://github.com/theredsunrise/AndroidCoolDragAndDropGridView
GridViewHeader Android GridView with addHeader( View view ) function
https://github.com/munix/GridViewHeader
DynamicGrid Drag and drop GridView for Android
https://github.com/askerov/DynamicGrid
PagingGridView A Paging GridView with the same behavior as PagingListView.
https://github.com/nicolasjafelle/PagingGridView
DraggableGridView A drag-and-drop scrolling grid view for Android
https://github.com/thquinn/DraggableGridView
AndroidStaggeredGrid An Android staggered grid view which supports multiple columns with rows of varying sizes.
https://github.com/etsy/AndroidStaggeredGrid
StaggeredGridView A modified version of Android's experimental StaggeredGridView. Includes own OnItemClickListener and OnItemLongClickListener, selector, and fixed position restore.
https://github.com/maurycyw/StaggeredGridView
android-GridViewWithHeaderAndFooter GridView with Header and Footer
https://github.com/liaohuqiu/android-GridViewWithHeaderAndFooter
DragExpandGrid 可展开，可拖动，可排序，可删除，固定更多的GridView
https://github.com/wedcel/DragExpandGrid

RatingView

SimpleRatingView A rating toggle for Android which switches between 3 rating levels: positive, neutral, and negative.
https://github.com/xiprox/SimpleRatingView

Recyclerview

ChipsLayoutManager ANDROID. ChipsLayoutManager (SpanLayoutManager). A custom layout manager for RecyclerView which mimicric TextView span behaviour, flow layouts behaviour with support of amazing recyclerView features
https://github.com/BelooS/ChipsLayoutManager
RecyclerTabLayout An efficient TabLayout library implemented with RecyclerView.
https://github.com/nshmura/RecyclerTabLayout
PullZoomRecyclerView A pull to zoom-in RecyclerView for android
https://github.com/dinuscxj/PullZoomRecyclerView
BeautifulParallax Beautify your RecyclerViews with a great parallax effect !
https://github.com/florent37/BeautifulParallax
sectioned-recyclerview Implement a multi-sectioned RecyclerView using a custom adapter interface. http://aidanfollestad.com https://github.com/afollestad/sectioned-recyclerview
SuperSLiM A layout manager for the RecyclerView with interchangeable linear, grid, and staggered displays of views, all with configurable section headers including the sticky variety as specified in the material design docs. http://tonicartos.com
https://github.com/TonicArtos/SuperSLiM
XRecyclerView a RecyclerView that implements pullrefresh and loadingmore featrues.you can use it like a standard RecyclerView
https://github.com/jianghejie/XRecyclerView
twoway-view RecyclerView made simple
https://github.com/lucasr/twoway-view
recyclerview-animators An Android library which easily add itemanimator to RecyclerView items.
https://github.com/wasabeef/recyclerview-animators
SuperRecyclerView Pumped up RecyclerView
https://github.com/Malinskiy/SuperRecyclerView
DynamicRecyclerView Set of plugable extenstions for Android RecyclerView
https://github.com/ismoli/DynamicRecyclerView
android-advancedrecyclerview RecyclerView extension library which provides advanced features. (ex. Google's Inbox app like swiping, Play Music app like drag and drop sorting)
https://github.com/h6ah4i/android-advancedrecyclerview
UltimateRecyclerView A RecyclerView(advanced and flexible version of ListView) with refreshing,loading more,animation and many other features.
https://github.com/cymcsg/UltimateRecyclerView
RecyclerView-FlexibleDivider Android library providing simple way to control divider items of RecyclerView
https://github.com/yqritc/RecyclerView-FlexibleDivider
RecyclerView-MultipleViewTypesAdapter Android library defining adapter classes of RecyclerView to manage multiple view types
https://github.com/yqritc/RecyclerView-MultipleViewTypesAdapter
header-decor A couple of sticky header decorations for android's recycler view.
https://github.com/edubarr/header-decor
SectionedRecyclerView An adapter to create Android RecyclerViews with sections, providing headers and footers.
https://github.com/truizlop/SectionedRecyclerView
RecyclerViewHeader Super fast and easy way to create header for Android RecyclerView
https://github.com/blipinsk/RecyclerViewHeader
sticky-headers-recyclerview This decorator allows you to easily create section headers for RecyclerViews using a LinearLayoutManager in either vertical or horizontal orientation.
https://github.com/timehop/sticky-headers-recyclerview
RecyclerItemDecoration ItemDecoration for RecyclerView using LinearLayoutManager
https://github.com/magiepooh/RecyclerItemDecoration
Dividers Dividers is a simple Android library to create easy separators for your RecyclerViews
https://github.com/Karumi/Dividers
recyclerview-binder Android Library for RecyclerView to manage order of items and multiple view types.
[https://github.com/satorufujiwara/recyclerview-binder)
SwipeMenuViewHolder 一个可以滑出条目操作菜单的RecycleView.ViewHolder 。
https://github.com/liangzhitao/SwipeMenuViewHolder
RecyclerViewSwipeDismiss A very easy-to-use and non-intrusive implement of Swipe to dismiss for RecyclerView.
https://github.com/CodeFalling/RecyclerViewSwipeDismiss
HeaderAndFooterRecyclerView 支持addHeaderView、 addFooterView、以及分页加载数据的RecyclerView
https://github.com/cundong/HeaderAndFooterRecyclerView
PowerfulRecyclerViewAdapter A Common RecyclerView.Adapter implementation which supports any kind of items and has useful data operating APIs such as remove,add,etc.
https://github.com/simplify20/PowerfulRecyclerViewAdapter
RecyclerViewEnhanced Android Library to provide swipe, click and other functionality to RecyclerView.
https://github.com/nikhilpanju/RecyclerViewEnhanced/
CircleRecyclerView the library is a loop RecyclerView, can show some effects when display
https://github.com/kHRYSTAL/CircleRecyclerView
epoxy Epoxy is an Android library for building complex screens in a RecyclerView.
https://github.com/airbnb/epoxy
ShimmerRecyclerView A custom recycler view with shimmer views to indicate that views are loading.
https://github.com/sharish/ShimmerRecyclerView

SearchView

MaterialSearchView Cute library to implement SearchView in a Material Design Approach http://miguelcatalan.info/2015/09/23/MaterialSearchView/
https://github.com/MiguelCatalan/MaterialSearchView

ViewPager

ViewPagerCards ViewPager cards inspired by Duolingo
https://github.com/rubensousa/ViewPagerCards
WoWoViewPager Optimized for scrolling app intros or making your CV app. Free and open source.
https://github.com/Nightonke/WoWoViewPager
Android-ViewPagerIndicator Paging indicator widgets compatible with the ViewPager from the Android Support Library and ActionBarSherlock. Originally based on Patrik Åkerfeldt's ViewFlow.
https://github.com/JakeWharton/Android-ViewPagerIndicator
ViewPagerExtensions A set of custom views for the ViewPager from the Android Support Package
https://github.com/astuetz/ViewPagerExtensions
parallaxviewpager An easy-to-use ViewPager subclass with parallax background effect for Android apps.
https://github.com/andraskindler/parallaxviewpager
android-auto-scroll-view-pager Android auto scroll viewpager or viewpager in viewpager
https://github.com/Trinea/android-auto-scroll-view-pager
NumericPageIndicator Android - A ViewPager page indicator that displays the current page number and (optionally) the page count
https://github.com/ManuelPeinado/NumericPageIndicator
VerticalViewPager Vertical implementation of Android ViewPager
https://github.com/LambergaR/VerticalViewPager
FlycoPageIndicator A Page Indicator Lib is realized in a different way. Support for Android 2.2 and up.
https://github.com/H07000223/FlycoPageIndicator
InfiniteViewPager Augment Android's ViewPager with wrap-around functionality.
https://github.com/antonyt/InfiniteViewPager
ViewPager3D Extension of Android ViewPager with a 3D swipe effect
https://github.com/inovex/ViewPager3D
LoopingViewPager An android ViewPager extension allowing infinite scrolling
https://github.com/imbryk/LoopingViewPager
SpringIndicator A spring indicator like Morning Routine guide.
https://github.com/chenupt/SpringIndicator
SpinningTabStrip SpinningTabStrip & SpinningViewPager are android extensions allowing infinite scrolling.
https://github.com/eccyan/SpinningTabStrip
Android-ScreenSlidePager Full screen slide pager to display images fetched from Internet by Picasso
https://github.com/LyndonChin/Android-ScreenSlidePager
RecyclerViewPager A ViewPager implemention base on RecyclerView's code. Support fling operation like gallary.
https://github.com/lsjwzh/RecyclerViewPager
MultiViewPager The MultiViewPager is an extension of the support-v4 library's ViewPager that allows the pages to be wider or narrower than the ViewPager itself. It takes care of aligning the pages next to each other, and always keeping the selected page centered.
https://github.com/Pixplicity/MultiViewPager
HollyViewPager HollyViewPager
https://github.com/florent37/HollyViewPager
SCViewPager A simple ViewPager extends that provide scroll based animation like Jazz Hands for iOS. Jazz Hands library provided by IFTTT : https://github.com/IFTTT/JazzHands
https://github.com/sacot41/SCViewPager
ExpandablePager ViewPager that slides vertically between 2 states (expanded and collapsed).
https://github.com/Telenav/ExpandablePager
ParallaxViewPager ViewPager页面切换视差效果
https://github.com/ybq/ParallaxViewPager
BubbleTab Put some bubble in your tabs and give your apps a supa fresh style !
https://github.com/florent37/BubbleTab

ActionBar

ActionBarSherlock Action bar implementation which uses the native action bar on Android 4.0+ and a custom implementation on pre-4.0 through a single API and theme.
https://github.com/JakeWharton/ActionBarSherlock
TabBarView An Android Library to help you create actionbar tabs like "Capitaine train" app by Cyril Mottier
https://github.com/Mirkoddd/TabBarView
android-extendedactionbar An example of how to extend the ActionBar under the status bar from the theme
https://github.com/Takhion/android-extendedactionbar
FadingActionBar Android library implementing a fading effect for the action bar, similar to the one found in the Play Music app
https://github.com/ManuelPeinado/FadingActionBar
GlassActionBar Android - a library that adds a glass-like effect to the action bar.
https://github.com/ManuelPeinado/GlassActionBar

Snackbar

TSnackBar Android Snackbar from the Top (similar to Crouton)
https://github.com/AndreiD/TSnackBar

Fragment

Android-CircularRevealFragment A demo about how to show and hide fragments using the new Android Lollipop circle reveal transitions. Minimum API level is 21
https://github.com/ferdy182/Android-CircularRevealFragment
StatedFragment The library is documented in http://inthecheesefactory.com/blog/best-approach-to-keep-android-fragment-state/en
https://github.com/nuuneoi/StatedFragment
EtsyBlur EtsyBlur is an Android library that allows developers to easily add a glass-like effect implemented in the Etsy app.
https://github.com/Manabu-GT/EtsyBlur
UIBlock 代替fragment的轻量级解耦UI的类
https://github.com/tianzhijiexian/UIBlock

Activity

ActivityStarter Android Library that provide simpler way to start the Activities with multiple arguments.
https://github.com/MarcinMoskala/ActivityStarter
CustomActivityOnCrash Android library that allows launching a custom activity when your app crashes, instead of showing the hated "Unfortunately, X has stopped" dialog.
https://github.com/Ereza/CustomActivityOnCrashhttps://github.com/Ereza/CustomActivityOnCrash
android-slidingactivity Android library which allows you to swipe down from an activity to close it.
https://github.com/klinker41/android-slidingactivity
AwesomeSplash Awesome-looking customizable splash screen
https://github.com/ViksaaSkool/AwesomeSplash
EasyIntro The flexible, easy to use, all in one app intro library for your Android project.
https://github.com/meNESS/EasyIntro
TGOCMessagesActivity Flexible chat activity for Android.
https://github.com/two-guys-one-code/TGOCMessagesActivity

Tabs

NavigationTabBar Navigation tab bar with colorful interactions.
https://github.com/DevLight-Mobile-Agency/NavigationTabBar

Toast

Crouton Context sensitive notifications for Android
https://github.com/keyboardsurfer/Crouton
SuperToasts A library that extends the Android toast framework.
https://github.com/JohnPersano/SuperToasts
Android-AppMsg In-layout notifications. Based on Toast notifications and article by Cyril Mottier
https://github.com/johnkil/Android-AppMsg
MessageBar An Android Toast replacement, similar to the one seen in the GMail app.
https://github.com/SimonVT/MessageBar
SnackBar toast-like alert pattern for Android
https://github.com/MrEngineer13/SnackBar
loadtoast Pretty material design toasts with feedback animations
https://github.com/code-mc/loadtoast
pretty-toast This is quite simple toast library, that make it easier to show and create custom toast. Library provides Builder which can be used to create flexible custom Toast messages.

https://github.com/CROSP/pretty-toast

TastyToast Make your native android toast look beautiful.
https://github.com/yadav-rahul/TastyToast

LockView

MaterialPatternllockView Material Pattern Lockview is a View which inspired from Lollipop+ Pattern lock. This Project is still in work, More Options will be added as soon as possible. Some KeyFeature of this Library.
https://github.com/AmniX/MaterialPatternllockView
PinLockView A clean, minimalistic, easy-to-use and highly customizable pin lock custom view for Android https://github.com/aritraroy/PinLockView
PinCodeView A custom view with keyboard and character display to be used for authentication https://github.com/Arjun-sna/android-passcodeview
PatternLockView An easy-to-use, customizable, Material Design complaint Pattern Lock view for Android https://github.com/aritraroy/PatternLockView

SeekBar

ColorSeekBar A colorful SeekBar for picking color
https://github.com/rtugeek/ColorSeekBar
HoloCircleSeekBar A Circle SeekBar inspired by Android Holo ColorPicker designed by Marie Schweiz and developed by Lars Werkman.
https://github.com/JesusM/HoloCircleSeekBar
AndroidCircularSeekBar A circular seek bar for Android
https://github.com/RaghavSood/AndroidCircularSeekBar
circularseekbar Custom circular SeekBar (Circle, Semi-circle, and Ellipse) View/Widget for Android
https://github.com/devadvance/circularseekbar
StartPointSeekBar StartPointSeekBar is a custom view for the Android platform that makes it possible to have a SeekBar to have custom start point.
https://github.com/vashisthg/StartPointSeekBar
SeekArc Circular SeekBar view for Android
https://github.com/TriggerTrap/SeekArc
discreteSeekBar DiscreteSeekbar is my poor attempt to develop an android implementation of the Discrete Slider component from the Google Material Design Guidelines.
https://github.com/AnderWeb/discreteSeekBar
android-comboseekbar seekbar with distinct values
https://github.com/karabaralex/android-comboseekbar
RangeSeekbar A seekbar contains two cursor(left and right). Multiple touch supported.
https://github.com/dolphinwang/RangeSeekbar
SeekBarCompat A material based support library to bring consistent SeekBars in Android for API 16 and above.
https://github.com/ahmedrizwan/SeekBarCompat
HorizontalWheelView Custom view for user input that models horizontal wheel controller.
https://github.com/shchurov/HorizontalWheelView
BubbleSeekBar 自定义SeekBar，进度变化由可视化气泡样式呈现
https://github.com/woxingxiao/BubbleSeekBar

PopupWindow

RelativePopupWindow Android PopupWindow that can be easily located relative to anchor View.
https://github.com/kakajika/RelativePopupWindow

Time View

Timecon Easy-to-use animated clock icon
https://github.com/alxrm/Timecon
Caldroid Caldroid is a fragment that display calendar with dates in a month. Caldroid can be used as embedded fragment, or as dialog fragment. User can also swipe left/right to navigate to different months.
https://github.com/roomorama/Caldroid
android-times-square Standalone Android widget for picking a single date from a calendar view.
https://github.com/square/android-times-square
calendar-widget The Android calendar widget is home screen widget for your Android device. It displays a list of upcoming calendar events so that you can easily have a glimpse at your upcoming appointments.
https://github.com/plusonelabs/calendar-widget
android-spinnerwheel Wheel-like spinner widget for Android
https://github.com/ai212983/android-spinnerwheel
Android-MonthCalendarWidget A simple example of a responsive Month Calendar app widget for Android
https://github.com/romannurik/Android-MonthCalendarWidget
android-betterpickers Android library for better Picker DialogFragments
https://github.com/derekbrameyer/android-betterpickers
android-calendar-card Android calendar view (like card)
https://github.com/kenumir/android-calendar-card
DateSlider An alternative DatePicker for Android
https://github.com/bendemboski/DateSlider
Android-Week-View Android Week View is an android library to display calendars (week view or day view) within the app. It supports custom styling.
https://github.com/alamkanak/Android-Week-View
SilkCal Android calendar view inspired by Sunrise calendar and iOS7 stock calendar
https://github.com/NLMartian/SilkCal
TimeRangePicker TimeRangePicker is a library which can be used to select a time range.
https://github.com/tittojose/TimeRangePicker
MaterialDateTimePicker Pick a date or time on Android in style
https://github.com/wdullaer/MaterialDateTimePicker
TimerView an android open source timer
https://github.com/pheynix/TimerView
MaterialDateRangePicker A material Date Range Picker based on wdullaers MaterialDateTimePicker
https://github.com/borax12/MaterialDateRangePicker
material-calendarview A Material design back port of Android's CalendarView https://prolificinteractive.github.io/material-calendarview/
https://github.com/prolificinteractive/material-calendarview
CharacterPickerView 可实现三级联动的选择器，高仿iOS的滚轮控件
https://github.com/alafighting/CharacterPickerView
CompactCalendarView An android library which provides a compact calendar view much like the one used in google calenders, following material design.
https://github.com/SundeepK/CompactCalendarView
material-calendar-view A calendar with pretty Material look, that runs on Android API 8+ https://github.com/JonatanSalas/material-calendar-view
FlatTimeCollection Amazing Dynamic Time UI :clock1030: :hourglass: and More
https://github.com/anastr/FlatTimeCollection
SublimePicker A material-styled android view that provisions picking of a date, time & recurrence option, all from a single user-interface.
https://github.com/vikramkakkar/SublimePicker
LightCalendarView A lightweight monthly calendar view for Android, fully written in Kotlin. Designed to meet the minimum demands for typical calendars.
https://github.com/recruit-mp/LightCalendarView
DateTimeRangePicker A date time range picker for android written in Kotlin
https://github.com/skedgo/DateTimeRangePicker

Layout

ThreeDLayout A 3D Layout,When you use it warp other view,it can became a 3D view
https://github.com/githubwing/ThreeDLayout
CompoundLayout It's an Android library that allows you to use Layout as RadioButton or CheckBox.
https://github.com/Jaouan/CompoundLayout
RecyclerRefreshLayout A pull to refresh layout for android, the RecyclerRefreshLayout is based on the SwipeRefreshLayout. support all the views, highly customizable, code simplicity, etc
https://github.com/dinuscxj/RecyclerRefreshLayout
MaterialLeanBack A beautiful leanback port for Smartphones and Tablets
https://github.com/florent37/MaterialLeanBack
HoldToLoadLayout HoldToLoadLayout is a view group that can contain a single child. It draws your child to middle of layout, and performs loading wheel around it with settings you determined. https://github.com/melihaksoy/HoldToLoadLayout
flexbox-layout Flexbox for Android
https://github.com/google/flexbox-layout
CursorWheelLayout An Android Widget for selecting items that rotate on a wheel.
https://github.com/BCsl/CursorWheelLayout
SwipeRevealLayout A layout that you can swipe/slide to show another layout.
https://github.com/chthai64/SwipeRevealLayout
BGARefreshLayout-Android 开发者使用BGARefreshLayout-Android可以对各种控件实现多种下拉刷新效果、上拉加载更多以及配置自定义头部广告位
BGASwipeItemLayout-Android 类似iOS带弹簧效果的左右滑动控件，可作为AbsListView和RecyclerView的item（作为AbsListView的item时的点击事件参考代码家的 https://github.com/daimajia/AndroidSwipeLayout )
https://github.com/bingoogolapple/BGASwipeItemLayout-Android
https://github.com/bingoogolapple/BGARefreshLayout-Android
DragLinearLayout Android LinearLayout with drag and drop to reorder.
https://github.com/justasm/DragLinearLayout
Android-MosaicLayout-v0.1 Mosaiclayout is android layout to display group of views in more that 92 different patterns.
https://github.com/adhamenaya/Android-MosaicLayout-v0.1
FoldableLayout Android widgets to implement folding animation
https://github.com/alexvasilkov/FoldableLayout
ScalableLayout Scalable Layout For Android
https://github.com/ssomai/ScalableLayout
FlipLayout Android Flip 3D Animation like web Google+
https://github.com/stormzhang/FlipLayout
FlowLayout Android implementation of FlowLayout. Layout arranges its children in multiple rows depending on their width.
https://github.com/blazsolar/FlowLayout
CircleLayout Circular layout for android
https://github.com/dmitry-zaitsev/CircleLayout
CircleLayout An Android layout for arranging children along a circle
https://github.com/francoiscampbell/CircleLayout
ResideLayout An Android Layout which has a same function like https://github.com/romaonthego/RESideMenu
https://github.com/kyze8439690/ResideLayout
GooglePlusLayout GoolgePlusLayout is a custom layout that plays animation on the children views while scrolling as the layout in the Google Plus (android) main page
https://github.com/Nammari/GooglePlusLayout
android-empty-layout A library for showing different types of layouts when a list view is empty
https://github.com/alamkanak/android-empty-layout
ImageLayout Android - A layout that arranges its children in relation to a background image
https://github.com/ManuelPeinado/ImageLayout
android-flowlayout Linear layout, that wrap its content to the next line if there is no space in the current line.
https://github.com/ApmeM/android-flowlayout
AndroidSwipeLayout The Most Powerful Swipe Layout!
https://github.com/daimajia/AndroidSwipeLayout
FreeFlow A layout engine for Android that decouples layouts from the View containers that manage scrolling and view recycling. FreeFlow makes it really easy to create custom layouts and beautiful transition animations as data and layouts change
https://github.com/Comcast/FreeFlow
SwipeableLayout A swipeable - auto resizing view group for android
https://github.com/wmbest2/SwipeableLayout
SwipeBackLayout An Android library that help you to build app with swipe back gesture.
https://github.com/Issacw0ng/SwipeBackLayout
android_maskable_layout A library that easily allows you to mask layouts/viewgroups
https://github.com/christophesmet/android_maskable_layout
android-gridlayout A backwards compatible implementation of GridLayout for Android
https://github.com/dlew/android-gridlayout
DragLayout An Android Project
https://github.com/BlueMor/DragLayout
ExpandableLayout Implementation of ExpandableListview with custom header and custom content.
https://github.com/traex/ExpandableLayout
android-PullRefreshLayout This component like SwipeRefreshLayout, it is more beautiful than SwipeRefreshLayout.
https://github.com/baoyongzhang/android-PullRefreshLayout
DragTopLayout Drag down to show a view on the top.
https://github.com/chenupt/DragTopLayout
shadow-layout Android Shadow Layout
https://github.com/dmytrodanylyk/shadow-layout
SmartTabLayout A custom ViewPager title strip which gives continuous feedback to the user when scrolling
https://github.com/ogaclejapan/SmartTabLayout
ArcLayout A very simple arc layout library
https://github.com/ogaclejapan/ArcLayout
Scrollable Android scrollable tabs
https://github.com/noties/Scrollable
RearrangeableLayout An android layout to re-arrange child views via dragging
https://github.com/rajasharan/RearrangeableLayout
BGAFlowLayout Android流式布局，可配置是否将每一行的空白区域平均分配给子控件。
https://github.com/bingoogolapple/BGAFlowLayout-Android
JellyRefreshLayout A pull-down-to-refresh layout inspired by Lollipop overscrolled effects
https://github.com/allan1st/JellyRefreshLayout
Dragger The library was created in order to provide new animations for activities on Android.
https://github.com/ppamorim/Dragger
PrismView PrismView provides animations for your views, similar to Dragger, but with fragments! You can change the fragment of the PrismView any time.
https://github.com/ppamorim/PrismView
BeerSwipeRefresh This project aims to provide a reusable Swipe to Refresh widget for Android.
https://github.com/recruit-lifestyle/BeerSwipeRefresh
SuperSwipeRefreshLayout A Custom SwipeRefreshLayout
https://github.com/nuptboyzhb/SuperSwipeRefreshLayout
Android-RatioLayout This is a specified proportion to the size of the Layout or View support library, with which you can easily set a fixed ratio of the size of the Layout or View, internal adaptive size calculation, completely abandon the code to calculate the size! If you have any questions in the course or suggestions, please send an e-mail to the following e-mail, thank you!
https://github.com/devsoulwolf/Android-RatioLayout
AndroidAutoHideHeader A layout that hide the header when the body is scrolled down and reveal it when the header is scrolled up
https://github.com/vcaen/AndroidAutoHideHeader
PhysicsLayout Android layout that simulates physics using JBox2D
https://github.com/Jawnnypoo/PhysicsLayout
FabTransitionLayout Provides the Floating Action Button Transition as specified in the Material Design Guide in a simple library.
https://github.com/bowyer-app/FabTransitionLayout
Android-MaterialDeleteLayout Maetrial Design Delete Concept Implement
https://github.com/android-cjj/Android-MaterialDeleteLayout
smooth-app-bar-layout Smooth version of Google Support Design AppBarLayout
https://github.com/henrytao-me/smooth-app-bar-layout
BlurZoomGallery Extended CoordinatorLayout, that helps creating background galleries.
https://github.com/fafaldo/BlurZoomGallery
android-linear-layout-manager Implementation of LinearLayoutManager which wraps its contents.
https://github.com/serso/android-linear-layout-manager
ScrollDownLayout A custom Android Widget，support u use ViewPager in a ScrollView or ListView。
https://github.com/xiongwei-git/ScrollDownLayout
Search-View-Layout [BETA] Search View Layout like Lollipop Dialler
https://github.com/sahildave/Search-View-Layout
FlycoTabLayout An Android TabLayout Lib has two kinds of TabLayout at present.
https://github.com/H07000223/FlycoTabLayout
NodeFlow NodeFlow is an Android library that provides a simple way to visualize hierarchical content.
https://github.com/Telenav/NodeFlow
FoldingCell FoldingCell is an expanding content cell inspired by folding paper material http://ramotion.com
https://github.com/Ramotion/folding-cell-android
BubbleLayout Bubble View for Android.
https://github.com/MasayukiSuda/BubbleLayout
BubbleAnimationLayout You don’t want your apps look and feel boring, do you? Add some bubbles! https://www.cleveroad.com
https://github.com/Cleveroad/BubbleAnimationLayout
BufferTextInputLayout A simple customised version of the TextInputLayout from the Android Design Support Library
https://github.com/bufferapp/BufferTextInputLayout
ParticleDismissLayout Effect of particle Boom. 视图碎裂效果
https://github.com/zhangke3016/ParticleDismissLayout
Vorolay VoronoiView is a view (ViewGroup) that allows you to add and display views inside Voronoi diagram regions.
https://github.com/Quatja/Vorolay
** Android Activity 滑动返回
https://github.com/bingoogolapple/BGASwipeBackLayout-Android

CollapsingAvatarToolbar Collapsing Toolbar with a moving avatar for Android.
https://github.com/Sloy/CollapsingAvatarToolbar
FABToolbar An implementation of Google design, with Floating Action Button transforming into toolbar.
https://github.com/fafaldo/FABToolbar

VideoView

video-crop Android Video Crop
https://github.com/dmytrodanylyk/video-crop
Android-ScalableVideoView Android Texture VideoView having a variety of scale types like the scale types of ImageView such as fitCenter, centerCrop, centerTopCrop and more
https://github.com/yqritc/Android-ScalableVideoView
UniversalVideoView UniversalVideoView is a Android widget helps playing video easier, which is similar with the Android system native VideoView, but with more Media Controller customization.(https://github.com/linsea/UniversalVideoView)
https://github.com/linsea/UniversalVideoView

Mapview

AirMapView A view abstraction to provide a map user interface with various underlying map providers
https://github.com/airbnb/AirMapView
Google Maps Android API utility library This open-source library contains classes that are useful for a wide range of applications using the Google Maps Android API.
https://github.com/googlemaps/android-maps-utils
MapScaleView Scale bar for Google Maps Android API.
https://github.com/pengrad/MapScaleView

Choreographer

Takt Takt is Android library for measuring the FPS using Choreographer.
https://github.com/wasabeef/Takt

Keyboard

XhsEmoticonsKeyboard 也许是最良心的开源表情键盘解决方案。
https://github.com/w446108264/XhsEmoticonsKeyboard
AndroidKeyboardWatcher Software keyboard open/close watcher for Android.
https://github.com/AzimoLabs/AndroidKeyboardWatcher

WebView

safe-java-js-webview-bridge 为WebView中的Java与JavaScript提供【安全可靠】的多样互通方案 http://www.pedant.cn/2014/07/04/webview-js-java-interface-research/
https://github.com/pedant/safe-java-js-webview-bridge
Android-AdvancedWebView Enhanced WebView component for Android that works as intended out of the box
https://github.com/delight-im/Android-AdvancedWebView

Notification

Carousel-Notification Carousel-Notification lets you make carousel type notification where user can navigate within the notification https://github.com/shaileshmamgain5/Carousel-Notification

Other

TagViewGroup Android 仿小红书图片标签，实现了图片标签的动画，布局，水波纹，编辑等功能，还可以自定义 Tag。
https://github.com/shellljx/TagViewGroup
EasyFlipView A quick and easy flip view through which you can create views with two sides like credit cards, poker cards etc.
https://github.com/wajahatkarim3/EasyFlipView
Thermometer Android Thermometer Widget.
https://github.com/kofigyan/Thermometer
RMSwitch A simple and customizable two or three states Switch View
https://github.com/RiccardoMoro/RMSwitch
Audiogram Lightweight audio wave component
https://github.com/alxrm/Audiogram
TumblrLikeAnimView 仿Tumblr点赞动画效果
https://github.com/alex5241/TumblrLikeAnimView
MaterialScrollBar An Android library that brings the Material Design 5.1 sidebar to pre-5.1 devices.
https://github.com/krimin-killr21/MaterialScrollBar
ScratchView ScratchView repo is UX Design involving scratch cards like views which are scratched to reveal the information they conceal.
https://github.com/cooltechworks/ScratchView
MaryPopup Expand your view with no problem ;)
https://github.com/Meetic/MaryPopup
MiladBadgeView simple and useful BadgeView for android
https://github.com/miladheydari/MiladBadgeView
SwipeableCard A simple implementation of swipe card like StreetView
https://github.com/michelelacorte/SwipeableCard
BGABanner-Android Splash界面滑动导航+各种切换动画自动轮播效果
https://github.com/bingoogolapple/BGABanner-Android
BGABadgeView-Android Android徽章控件
https://github.com/bingoogolapple/BGABadgeView-Android
TriangleLabelView Show triangle view.
https://github.com/shts/TriangleLabelView
SwipeSelector A nicer-looking, more intuitive and highly customizable alternative for radio buttons and dropdowns for Android.
https://github.com/roughike/SwipeSelector
Emoji A simple library to add Emoji support to your Android Application. In a PopupWindow Emojis can be chosen. In order to edit and display text with Emojis this library provides public APIs: EmojiEditText & EmojiTextView.
https://github.com/vanniktech/Emoji
BottomBar A custom view component that mimicks the new Material Design Bottom Navigation pattern.
https://github.com/roughike/BottomBar
CubeGrid Cube grid animation about the android.
https://github.com/david-wei/CubeGrid
SwipeStack A simple, customizable and easy to use swipeable view stack for Android.
https://github.com/flschweiger/SwipeStack
BrokenView Glass-break effect for views.
https://github.com/zhanyongsheng/BrokenView
AndroidTagView An Android TagView library. You can customize awesome TagView by using this library.
https://github.com/whilu/AndroidTagView
GalleryFinal Android自定义相册，实现了拍照、图片选择（单选/多选）、裁剪（单/多裁剪）、旋转、ImageLoader无绑定任由开发者选择、功能可配置、主题样式可配置。GalleryFinal为你定制相册。
https://github.com/pengjianbo/GalleryFinal
DragGooView A wonderful feature to clear the unread reminder
https://github.com/PoplarTang/DragGooView
AudioWaves Shows a graphic representation of the sounds captured by the microphone on Android
https://github.com/FireZenk/AudioWaves
Swipecards A Tinder-like Android library to create the swipe cards effect. You can swipe left or right to like or dislike the content.
https://github.com/Diolor/Swipecards
Android SlideShow Widget A set of widgets to create smooth slide shows with ease.
https://github.com/marvinlabs/android-slideshow-widget
AndroidWheel Custom wheel widget for android
https://github.com/sephiroth74/AndroidWheel
range-bar Android widget for selecting a range of values.
https://github.com/edmodo/range-bar
TileView The TileView widget is a subclass of ViewGroup that provides a mechanism to asynchronously display tile-based images, with additional functionality for 2D dragging, flinging, pinch or double-tap to zoom, adding overlaying Views (markers), built-in Hot Spot support, dynamic path drawing, multiple levels of detail, and support for any relative positioning or coordinate system.
https://github.com/moagrius/TileView
android-switch-backport A backport of the Switch widget (http://developer.android.com/reference/android/widget/Switch.html) that was introduced on Android 4. This port works on Android 2.1+.
https://github.com/BoD/android-switch-backport
material-animated-switch A material Switch with icon animations and color transitions
https://github.com/glomadrian/material-animated-switch
android-bootstrap A template/bootstrap/boilerplate application that includes tons of great open source tools and frameworks.
https://github.com/AndroidBootstrap/android-bootstrap
cardslib Android Library to build a UI Card
https://github.com/gabrielemariotti/cardslib
AndroidSlidingUpPanel Android Sliding Up Panel Demo
https://github.com/umano/AndroidSlidingUpPanel
android-viewflow A horizontal view scroller library for Android
https://github.com/pakerfeldt/android-viewflow
android-viewbadger A simple way to "badge" any given Android view at runtime without having to cater for it in layout
https://github.com/jgilfelt/android-viewbadger
DraggablePanel Android library used to create an awesome Android UI based on a draggable element similar to the last YouTube graphic component.
https://github.com/pedrovgs/DraggablePanel
android-stackblur Android StackBlur is a library that can perform a blurry effect on a Bitmap based on a gradient or radius, and return the result. The library is based on the code of Mario Klingemann.
https://github.com/kikoso/android-stackblur
StickyGridHeaders An Android Library that makes it easy to make grid views with sectioned data and headers that stick to the top.
https://github.com/TonicArtos/StickyGridHeaders
AndroidViewHover An elegant way to show your menu or messages.
https://github.com/daimajia/AndroidViewHover
SystemBarTint Apply background tinting to the Android system UI when using KitKat translucent modes
https://github.com/jgilfelt/SystemBarTint
chromeview Android WebView implementation that uses the latest Chromium code
https://github.com/pwnall/chromeview
android-iconify Integration of FontAwesome for Android
https://github.com/JoanZapata/android-iconify
StandOut StandOut lets you easily create floating windows in your Android app.
https://github.com/pingpongboss/StandOut
android-sliding-layer-lib This repository host a library that provides an easy way to include an autonomous layer/view that slides from the side of your screen and which is fully gesture ready, the same way as our detail view in Wunderlist 2 does. This pattern can also be seen in Google+’s notification center or in Basecamp’s detail view.
https://github.com/6wunderkinder/android-sliding-layer-lib
Android-SwipeToDismiss Android swipe-to-dismiss mini-library and sample code
https://github.com/romannurik/Android-SwipeToDismiss
HoloColorPicker An Android Holo themed colorpicker designed by Marie Schweiz
https://github.com/LarsWerkman/HoloColorPicker
Lobsterpicker The library is offering a dialog with all shades of material design colors
https://github.com/LarsWerkman/Lobsterpicker
UnifiedPreference UnifiedPreference is a library for working with all versions of the Android Preference package from API v4 and up.
https://github.com/saik0/UnifiedPreference
aFileChooser Android library that provides a file explorer to let users select files on external storage.
https://github.com/iPaulPro/aFileChooser
NewQuickAction Android QuickAction
https://github.com/lorensiuswlt/NewQuickAction
android-uitableview Library and example project on how to use the UITableView component
https://github.com/thiagolocatelli/android-uitableview
Android-ProgressFragment Implementation of the fragment with the ability to display indeterminate progress indicator when you are waiting for the initial data.
https://github.com/johnkil/Android-ProgressFragment
android-pdfview A fast PDF reader component for Android development
https://github.com/JoanZapata/android-pdfview
Android-Pdf-Viewer-Library Pdf Viewer library for Android
https://github.com/jblough/Android-Pdf-Viewer-Library
QuiltViewLibrary Android Quilt View Library
https://github.com/jacobmoncur/QuiltViewLibrary
Android-UndoBar An implementation of Android's Undo Bar as seen in Google's Gmail app.
https://github.com/jenzz/Android-UndoBar
Android-ScrollBarPanel Android-ScrollBarPanel allows to attach a View to a scroll indicator like it's done in Path 2.0
https://github.com/rno/Android-ScrollBarPanel
ScrollBarPanelWithClock Path like scrollbar panel with clock.
https://github.com/learnNcode/ScrollBarPanelWithClock
changeloglib Android Library to display your changelog
https://github.com/gabrielemariotti/changeloglib
android-FlipView A small, easy to use android library for implementing flipping between views as seen in the popular Flipboard application
https://github.com/emilsjolander/android-FlipView
discreet-app-rate A lightweight non intrusive app rate reminder for Android
https://github.com/PomepuyN/discreet-app-rate
KenBurnsView Android ImageViews animated by Ken Burns Effect
https://github.com/flavioarfaria/KenBurnsView
UndoBar The UI component for Android advanced UI pattern undo-bar, used in Gmail app, create by roman nurik
https://github.com/soarcn/UndoBar
FancyCoverFlow A cool Open Source CoverFlow view for Android with several fancy effects.
https://github.com/davidschreiber/FancyCoverFlow
AppRater AppRater Library for Android
https://github.com/codechimp-org/AppRater
Android-ActionItemBadge This library offers a simple method to add a small badge icon to your ActionBar-MenuItem
https://github.com/mikepenz/Android-ActionItemBadge
poppyview Android library implementing a poppy view on scroll, similar to the one found in the Google Plus app
https://github.com/flavienlaurent/poppyview
android-segmented-control ios7 UISegmentedControl for android
https://github.com/hoang8f/android-segmented-control
IconicDroid IconicDroid is a custom Android Drawable which allows to draw icons from several iconic fonts.
https://github.com/atermenji/IconicDroid
ParallaxPager Add some depth to your Android scrolling.
https://github.com/prolificinteractive/ParallaxPager
AndroidPinning A standalone library project for certificate pinning on Android.
https://github.com/moxie0/AndroidPinning
WizardPager Wizard Pager is a library that provides an example implementation of a Wizard UI on Android, it's based of Roman Nurik's wizard pager
https://github.com/TechFreak/WizardPager
android-visualizer Takes the input from the Android MediaPlayer and displays visualizations, like in iTunes or WinAmp
https://github.com/felixpalmer/android-visualizer
ExpandablePanel Android library for creating an expandable to full screen view inside a viewgroup composition.
https://github.com/JorgeCastilloPrz/ExpandablePanel
NiftyNotification effects for android notifications.base on (Crouton)
https://github.com/sd6352051/NiftyNotification
GlowPadBackport A backport of the Android 4.2 GlowPadView that works on the SDK on API levels 4+
https://github.com/frakbot/GlowPadBackport
CustomLoading custom loading for android
https://github.com/stormzhang/CustomLoading
chromium_webview Android WebView wrapper based on chromium
https://github.com/mogoweb/chromium_webview
MagicViews Set custom font in Android application
https://github.com/ikocijan/MagicViews
TableFixHeaders Android library that implements a table with fixed headers.
https://github.com/InQBarna/TableFixHeaders
FloatingNotification Floating Notification for Android app - Facebook ChatHeads Notification system
https://github.com/marshallino16/FloatingNotification
android-slideshow-widget A set of widgets to create smooth slideshows with ease.
https://github.com/marvinlabs/android-slideshow-widget
HanselAndGretel Android library providing bread crumbs to the support library fragments.
https://github.com/JakeWharton/HanselAndGretel
ChromaHashView A classic password visualization concept, ported to Android
https://github.com/MichaelEvans/ChromaHashView
Android-DirectoryChooser A directory chooser library for Android.
https://github.com/passy/Android-DirectoryChooser
WheelView An Android Widget for selecting items that rotate on a wheel.
https://github.com/LukeDeighton/WheelView
RippleView View that imitates Ripple Effect on click which was introduced in Android L (for Android 2.3+)
https://github.com/siriscac/RippleView
GaugeView An Android library for drawing gauges on Canvas.
https://github.com/CodeAndMagic/GaugeView
ATableView Create iOS-like tables (UITableView) for Android, using UIKit object model.
https://github.com/dmacosta/ATableView
Android-RecurrencePicker Google Calendar Recurrence picker
https://github.com/Shusshu/Android-RecurrencePicker
ActionSheetForAndroid IOS UIActionSheet in Android
https://github.com/baoyongzhang/ActionSheetForAndroid
ckChangeLog ckChangeLog - An Android Library to display a Change Log
https://github.com/cketti/ckChangeLog
android-floatinglabel-widgets Floating label input widgets
https://github.com/marvinlabs/android-floatinglabel-widgets
MarkdownView MarkdownView is an Android webview with the capablity of loading Markdown text or file and display it as HTML, it uses MarkdownJ and extends Android webview.
https://github.com/falnatsheh/MarkdownView
NoNonsense-FilePicker A file/directory-picker for android. Implemented as a library project.
https://github.com/spacecowboy/NoNonsense-FilePicker
PopoverView A Popover Controller for Android Tablets. It's an easy solution to simulate an iOS UIPopoverController
https://github.com/lupidan/PopoverView
slideuppane A pane that slide up from the bottom of an android view
https://github.com/briangriffey/slideuppane
SwipeBack SwipeBack for Android Activities to do pretty the same as the android "back-button" will do, but in a really intuitive way by using a swipe gesture
https://github.com/sockeqwe/SwipeBack
ShowTipsView Highligth specific points of interest of your app
https://github.com/fredericojssilva/ShowTipsView
FancyCoverFlow A cool Open Source CoverFlow view for Android with several fancy effects.
https://github.com/davidschreiber/FancyCoverFlow
WheelView Android滚动选择控件
https://github.com/wangjiegulu/WheelView
CurtainView An android view,which can layer on any gravity for swiping.
https://github.com/aicaprio/CurtainView
android-pathview Android view with both path from constructed path or from svg.
https://github.com/geftimov/android-pathview
DrawableView A view that allows to paint and saves the result as a bitmap
https://github.com/PaNaVTEC/DrawableView
AndroidNotificationJson Convert JSON to Android Notification, useful for push notifications (GCM)
https://github.com/8tory/AndroidNotificationJson
PugNotification A powerful library for creating notifications in android platform.
https://github.com/halysongoncalves/pugnotification
ValueBar A beautiful Android custom View that works similar to a range or seekbar. With animations.
https://github.com/PhilJay/ValueBar
CircleDisplay Android View for displaying and selecting values in a circle-shaped View, with animations and touch gestures.
https://github.com/PhilJay/CircleDisplay
android-shapeLoadingView 高仿新版58 加载动画
https://github.com/zzz40500/android-shapeLoadingView
Decor Android layout decorators : Injecting custom attributes in layout files, Using decorators to get rid of class explosion with multiple custom views.
https://github.com/chemouna/decor
AndroidTreeView AndroidTreeView. TreeView implementation for android
https://github.com/bmelnychuk/AndroidTreeView
SHSegmentControl segmentcontrol widget for android
https://github.com/7heaven/SHSegmentControl
ElasticDownload Download Custom view with animation.
https://github.com/Tibolte/ElasticDownload
CircularCounter Circular Counter is an Android Widget I needed to implement for an application I was developing. As it could be useful to more people, I tried to make it generic enough to share and be used by others.
https://github.com/diogobernardino/CircularCounter
MarkView An android custom view that displays a circle with a colored arc given a mark.
https://github.com/xiprox/MarkView
pugnotification A powerful library for creating notifications in android platform.
https://github.com/halysongoncalves/pugnotification
android-json-form-wizard Android Material Json Form Wizard is a library for creating beautiful form based wizards within your app just by defining json in a particular format.
https://github.com/vijayrawatsan/android-json-form-wizard
FlippableStackView An Android library introducing a stack of Views with the first item being flippable (on dragging down).
https://github.com/blipinsk/FlippableStackView
ShadowViewHelper Shadow layout, shadow view for android.
https://github.com/wangjiegulu/ShadowViewHelper
velocimeter-view A velocimeter View for Android
https://github.com/glomadrian/velocimeter-view
AppIntro Make a cool intro for your Android app.
https://github.com/PaoloRotolo/AppIntro
ExpandableSelector ExpandableSelector is an Android library created to show a list of Button/ImageButton widgets inside a animated container which can be collapsed or expanded.
https://github.com/Karumi/ExpandableSelector
voice-recording-visualizer Simple Visualizer from mic input for Android.
https://github.com/tyorikan/voice-recording-visualizer
TourGuide TourGuide is an Android library that aims to provide an easy way to add pointers with animations over a desired Android View
https://github.com/worker8/TourGuide
Header-View Create an header for android.support.design.widget.NavigationView
https://github.com/rebus007/Header-View
CreditCardView CreditCardView is an Android library that allows developers to create the UI which replicates an actual Credit Card.
https://github.com/vinaygaba/CreditCardView
AndroidGlitterView A view to show bling bling stars when you touch it.
https://github.com/LyndonChin/AndroidGlitterView
SortableTableView An Android library containing a simple TableView and an advanced SortableTableView providing a lot of customisation possibilities to fit all needs.
https://github.com/ISchwarz23/SortableTableView
hsv-alpha-color-picker-android This library implements a color picker and a color preference for use in Android applications.
https://github.com/martin-stone/hsv-alpha-color-picker-android
Android-SpeedyViewSelector This is a change Background Or TextColor Selector support library, with which you can directly specify the Background to be displayed in different states or TextColor Layout xml, such as clicking the button effect, the conventional practice is to create Selector xml file in drawable directory but when the project becomes larger when the file bac…
https://github.com/devsoulwolf/Android-SpeedyViewSelector
InteractivePlayerView Custom android music player view.
https://github.com/iammert/InteractivePlayerView
tooltip-view Dead simple Android Tooltip Views
https://github.com/venmo/tooltip-view
Android-TrackingRingWidget It's a tracking activity ring widget like in Apple watch for Android.
PinView A Pin view widget for Android
https://github.com/DavidPizarro/PinView
CamView Android component to display live preview from the device camera and provide preview data for any external decoding processes
https://github.com/LivotovLabs/CamView
AndroidSweetSheet 一个富有动感的Sheet(选择器)
https://github.com/zzz40500/AndroidSweetSheet
SlidingCard Sliding cards with pretty gallery effects. http://android-arsenal.com/details/1/2355
https://github.com/mxn21/SlidingCard
DraggableView Draggable views with rotation and skew/scale effects.
https://github.com/elevenetc/DraggableView
ChatMessageView ChatMessageView helps you to create chat message view quickly like a typical chatting application.
https://github.com/himanshu-soni/ChatMessageView
SnailBar A lovely ,you can use it as a seekbar or progressbar.
https://github.com/android-cjj/SnailBar
PickerUI Android library to display a list of items for pick one
https://github.com/DavidPizarro/PickerUI
StickerView 单手操作图片控件镜像、置顶、缩放、移动
https://github.com/nimengbo/StickerView
DraggableFlipView An Android View library that flips while dragging.
https://github.com/sasakicks/DraggableFlipView
WindowView Android ImageView you pan by tilting your device.
https://github.com/justasm/WindowView
RadarScanView android下自定义View之雷达扫描 The Radar (Scanning) View on Android 当扫描到对象的时候，通过水波纹的方式显示扫描到的对象，可以动态的随机添加，并且扫描到的对象是可以点击的……
https://github.com/gpfduoduo/RadarScanView
SegmentedBarView Custom UI control for android which is showing data as a segments and a value inside them.
https://github.com/gspd-mobi/SegmentedBarView
PinterestView Pinterest like awesome menu control for Android
https://github.com/brucetoo/PinterestView
FabricView A new canvas drawing library for Android
https://github.com/antwankakki/FabricView
Android-TopScrollHelper Android-TopScrollHelper http://www.kmshack.kr
https://github.com/kmshack/Android-TopScrollHelper
ShortcutBadger The ShortcutBadger makes your Android App show the count of unread messages as a badge on your App shortcut!
https://github.com/leolin310148/ShortcutBadger
snake Snake View is a simple and animated linear chart for Android.
https://github.com/txusballesteros/snake
CountdownView Android 倒计时控件
https://github.com/iwgang/CountdownView
HighlightTextEditor HighlightTextEditor An android HighlightTextEditor
https://github.com/evilbinary/HighlightTextEditor
debugoverlay A tiny window overlay to log app internal on top of your android app http://hannesdorfmann.com/android/debug-overlay/
https://github.com/sockeqwe/debugoverlay
AndroidSwipeableCardStack A tinder like swipeable card stack component
https://github.com/wenchaojiang/AndroidSwipeableCardStack
IntegrationPreference Preference widget that automatically detects dependency applications and installs them by openning Play Store.
https://github.com/tasomaniac/IntegrationPreference
TinderView Created A Simple and Beautiful Tinder like card deck & Captain Train like toolbar.
https://github.com/GadgetCheck/TinderView
FlycoLabelView A Simple Android LabelView.
https://github.com/H07000223/FlycoLabelView
EntryScreenManager Intro/Walkthrough/Starting/Entry Screens.
https://github.com/kunall17/EntryScreenManager
SearchableSpinner Spinner with searchable items.
https://github.com/miteshpithadiya/SearchableSpinner
velocimeter-view A velocimeter View for Android
https://github.com/glomadrian/velocimeter-view
Popup-Dismiss-Catchable-Spinner A custom Spinner to which you could set listener for popup dismissal event. https://github.com/duchuyctlk/Popup-Dismiss-Catchable-Spinner
AnimatedSvgView Animated SVG Drawing for Android
https://github.com/jaredrummler/AnimatedSvgView
MultipleStatusView 一个支持多种状态的自定义View,可以方便的切换到：加载中视图、错误视图、空数据视图、网络异常视图、内容视图。
https://github.com/qyxxjd/MultipleStatusView
AndroidExpandingViewLibrary This is a library to help creating expanding views with animation in Android
https://github.com/diegodobelo/AndroidExpandingViewLibrary
material-tip Android Library for prompt tip
https://github.com/fcannizzaro/material-tip
StepView Step by step，just use stepviewIndicator，step indicator，flow indicator，timeline
https://github.com/baoyachi/StepView
DashboardView Android 自定义View 仪表盘
https://github.com/SuperKung/DashboardView
StackOverView a custom widget of android，like task manager of android 5.0.
https://github.com/Bossyao168/StackOverView
TEmptyView Just a Wheel——A easy way to setEmptyView to ListView、GridView or RecyclerView etc..
https://github.com/barryhappy/TEmptyView
Popview-Android Pop animation with circular dust effect for any view updation
https://github.com/krishnarb3/Popview-Android
PaperShredder a PaperShredder view for android
https://github.com/ldoublem/PaperShredder
Blur 高斯模糊库，四种模糊方式
https://github.com/robinxdroid/Blur
SpeedView Dynamic Speedometer UI for Android :zap: https://github.com/anastr/SpeedView
TargetView Animation View to Highlight particular Views :dart: https://github.com/anastr/SimpleTargetView
FogView_Library FogView is a android library that can show fog on any layout and the fog removes when user rubs it.
https://github.com/dynamitechetan/FogView_Library
MaterialTapTargetPrompt Material Design tap target for Android.
https://github.com/sjwall/MaterialTapTargetPrompt
BlurredView Dynamic blur of image views for Android
https://github.com/wl9739/BlurredView
codeview-android Show code content with syntax highlighting in native way.
https://github.com/Softwee/codeview-android
TutoShowcase A simple and Elegant Showcase view for Android
https://github.com/florent37/TutoShowcase
TapTargetView An implementation of tap targets from the Material Design guidelines for feature discovery
https://github.com/KeepSafe/TapTargetView
WaveSideBar You can use WaveSideBar in the contacts page of your application.
https://github.com/gjiazhe/WaveSideBar
FlipShare It's a cool way to show share widget.
https://github.com/JeasonWong/FlipShare
ScratchView This is a android custom view , like a scratch card effect!
https://github.com/D-clock/ScratchView
CreditSesameRingView Imitation of Ali credit sesame new old ring view.http://www.jianshu.com/p/8486a5baa708
https://github.com/HotBitmapGG/CreditSesameRingView
FiftyShadesOf An elegant context-care loading placeholder for Android
https://github.com/florent37/FiftyShadesOf
PlaceHolderView A wrapper for android recyclerview and contains stacked view
https://github.com/janishar/PlaceHolderView
FreshDownloadView FreshDownloadView is a java library for Android，It's a good way to show download progress with a cool animtion.some inspiration are from Dribbble
https://github.com/dudu90/FreshDownloadView
MultiStateView Android View that displays different content based on its state
https://github.com/Kennyc1012/MultiStateView
RealtimeBlurView It's just a realtime blurring overlay like iOS UIVisualEffectView. https://github.com/mmin18/RealtimeBlurView
SnowingView 一个看起来还不错的下雪动画。
https://github.com/HelloVass/SnowingView
DotMatrixView An Android custom view to display digits rendered as dots in a grid, with a style like a 1970s LED clock.
https://github.com/EscapeIndustries/DotMatrixView
ZGDanmaku android danmaku/danmu/tanmu implemented/renderered by opengl/opengles 2.0
https://github.com/zhgeaits/ZGDanmaku
RadarChart 一个可以自由定制、旋转交互的Android雷达图Lib
https://github.com/qstumn/RadarChart
FloatingView FloatingView can make the target view floating above the anchor view with cool animation
https://github.com/UFreedom/FloatingView
Android-PickerView 仿iOS的PickerView控件，有时间选择和选项选择并支持一二三级联动效果
https://github.com/saiwu-bigkoo/Android-PickerView
ENViews A cool dynamic view library
https://github.com/codeestX/ENViews
Android-3DTouch-PeekView Simple and powerful library to emulate iOS's "3D Touch" preview functionality on Android.
https://github.com/klinker24/Android-3DTouch-PeekView
DrawView Android view that allows the user to create drawings. Customize settings like color, width or tools. Undo or redo actions.
https://github.com/ByoxCode/DrawView
segmentedview ios风格的分段控件，类似 UISegmentedControl
https://github.com/czy1121/segmentedview
WheelPicker Simple and fantastic wheel view in realistic effect for android.
https://github.com/AigeStudio/WheelPicker
DragScaleCircleView a custom view that provides dragged and scaled
https://github.com/hpfs0/DragScaleCircleView
EmojiRain Implement a simple and funny Android animation —— the emoji rain in WeChat app.
https://github.com/Luolc/EmojiRain
WindView WindView is an Android Library to show Weather's Wind & pressure Status
https://github.com/AhmadNemati/WindView
TapTargetView An implementation of tap targets from the Material Design guidelines for feature discovery
https://github.com/KeepSafe/TapTargetView
FreeDrawView A View on which you can freely draw, customizing paint width, alpha and color, and take a screenshot of the content. Useful for note apps, signatures or free hand writing.
https://github.com/RiccardoMoro/FreeDrawView
android-snowfall Fully customizable implementation of "Snowfall View" on Android.
https://github.com/JetradarMobile/android-snowfall
PathAnimView 用于做Path动画的自定义View。
https://github.com/mcxtzhang/PathAnimView
TimelineView Customzable TimelineView for Android
https://github.com/qapqap/TimelineView
SuperIndicator a superindicatorlibray for viewpager, banner 仿爱奇艺视频，腾讯视频，搜狐视频首页推荐位轮播图
https://github.com/hejunlin2013/SuperIndicator
QingtingBannerView 仿蜻蜓FM轮播banner
https://github.com/JeasonWong/QingtingBannerView
ChatMessageView Chat UI library for Android
https://github.com/bassaer/ChatMessageView
Dali An image blur library for Android. It contains several modules for static blurring, live blurring and animations.
https://github.com/patrickfav/Dali
cameraview CameraView aims to help Android developers easily integrate Camera features.
https://github.com/google/cameraview

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