A declarative API to handle Android runtime permissions.

An implementation of tap targets from the Material Design guidelines for feature discovery.

📸 A well documented, high-level Android interface that makes capturing pictures and videos easy, addressing all of the common issues and needs. Real-time filters, gestures, watermarks, frame proces…

Android Library to build a UI Card

A small Android library allowing you to have a smooth and customizable horizontal or circular indeterminate ProgressBar

An Android text view with scrolling text change animation

DEPRECATED

A TextView that automatically resizes text to fit perfectly within its bounds.

🔥 A library for cropping image in a smart way that can identify the border and correct the cropped image. 智能图片裁剪框架。自动识别边框，手动调节选区，使用透视变换裁剪并矫正选区；适用于身份证，名片，文档等照片的裁剪。

Maps SDK for Android Utility Library

📦 Android Parcelables made easy through code generation.

Screaming fast JSON parsing and serialization library for Android.

Android UI library.

Backport of Material dialogs with easy-to-use API based on DialogFragment

Small library that wraps Google Play Service API in brilliant RxJava Observables reducing boilerplate to minimum.

Tool for create complex morphing animations using VectorDrawables (allows morphing between any pair of SVG images)

Android Studio plugin which automatically generates drawable selectors from appropriately named resources.

TileView is a subclass of android.view.ViewGroup that asynchronously displays, pans and zooms tile-based images. Plugins are available for features like markers, hotspots, and path drawing.

Useful library to help Android developpers to print with (Bluetooth, TCP, USB) ESC/POS thermal printer.

A carousel layout manager for RecyclerView

Lightweight hardware accelerated video/audio transcoder for Android.

A backport of the new Transitions API for Android

BLESSED, a Bluetooth Low Energy (BLE) library for Android

A Java library implementation of the ADB network protocol

Noise is an Android wrapper for kissfft, a FFT implementation written in C.

Customizable circular progress indicator

A clustering library for the Google Maps Android API v2

I backported the ICS Switch (api level 14+) to Froyo (api level 8)

Android preferences for WINNERS!