RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

Render After Effects animations natively on Android and iOS, Web, and React Native

A tool for reverse engineering Android apk files

Modular and customizable Material Design UI components for Android

Cute view animation collection.

Image Cropping Library for Android

A declarative API to handle Android runtime permissions.

A collection of samples demonstrating different frameworks and techniques for automated testing

Android Unit Testing Framework

[Archived] Highlight the best bits of your app to users quickly, simply, and cool...ly

A collection of sample apps to demonstrate how to use Google's ML Kit APIs on Android and iOS

PaperOnboarding is a material design slider made by @Ramotion

A simple image cropping library for Android.

A custom SeekBar on Android, which can be changed the size ,color , thumb drawable , tick drawable , tick text and indicator , also , will show an indicator view with progress above SeekBar when se…

Android UI libraries, components and animations by @ramotion

⭕️ CircleMenu is a simple, elegant UI menu with a circular layout and material design animations. Android UI library made by @Ramotion

A customizable welcome screen

Android widgets to implement folding animation

Collection of JUnit example projects

一个可以用代码设置selector背景（按下去背景颜色更改，样式变化等等）的button, 再也不用写selector了

A simple Floating Action Button that shows an anchored Navigation View

Solution apps for the apps that students create as they work through the Advanced Android Development training course created by Google Developer Training.

Processing mode and core library to create Android apps with Processing

Add some Depth to your fragments

Why use dependencies when you create your own transformations for Viewpager ?

A tutorial for setting up OpenCV 4.12.0 (and other 4.x.y version) for Android in Android Studio with Native Development Kit (NDK) support for C++ development.

Android app that applies real-time effects to the camera input

Gooey menu - Android Fab Button with Gooey effect