Android developer portal with tools, libraries, and apps

RootTools Library.

A utility that answers the question: is my user running on at least this SDK?

A library that handles the closing of your app interactively.

This is a library to simplify the usage of root commands on the Android OS. It is a Java wrapper around native binaries shipped with every Android OS, but can also be used to package and execute your own native binaries.

Tinker is a hot-fix solution library for Android, it supports dex, library and resources update without reinstalling apk.