SyncAdapter with periodically do sync of data.Publish a library to Maven Repositories.Installing Genymotion, the free version.What is ProGuard? What is use in Android?.Library Dagger 2: Dependency Injection in Applications.Fast way to setup Retrolambda on an android project.Internationalization and localization (I18N and L10N).Strict Mode Policy : A tool to catch the bug in the Compile Time.Define step value (increment) for custom RangeSeekBar.XMPP register login and chat simple example.Creating Overlay (always-on-top) Windows.Port Mapping using Cling library in Android.VectorDrawable and AnimatedVectorDrawable.Typedef Annotations: Capturing Screenshots.ProGuard - Obfuscating and Shrinking your code.Creating your own libraries for Android applications.Getting system font names and using the fonts.Hardware Button Events/Intents (PTT, LWP, etc.).Create Singleton Class for Toast Message.DayNight Theme (AppCompat v23.2 / API 14+).Storing Files in Internal & External Storage.