This is Android programming tips(English)

Android UI

Android UI 3.0

Android Basics

Android Java

Android Advanced

Android2D Graphics

Android Database

Android Network

Android Media

Android NDK

Android Test

Android Tools

Android Others


  • simplesound
  • Simple raw-wav audio I/O and processing helper tool for java. To change a bit, we can use as Android
    We can handle byte and short sound data as PCM and Wav.
    This library is required jcaki.

  • JSON-java
  • This is JSON library for Java. I often use it in server side code, especially it is powerful for in app purchase receipt handling.

  • Crittercism
  • Crittercism is logging API when crash happened. You can manage Android application in web site.
    Minimum feature is for free
    It also supports iOS and Windows Phone Application

  • Inimesed
  • Inimesed is simple Application using CMUSphinx. This provides useful hook of CMUSphinx and Android.
    This is not equivalent for OpenEars(iOS), but this is useful to use CMUSphinx in Android

  • Espresso
  • Espresso is nice test framework for Android. Especially it is powerful for UI.
    It provides Test Runner.

  • android-viewbadger
  • android-viewbadger is iOS badge like UI. You can add badge to any View classes.
    Easy to use and easy to customize.

  • ORMLite
  • ORMLite is Lightweight OR Mapper for several platforms.

  • JavaDatekit
  • This is pure Java Date manipulation library I made. It includes Useful Date and Calendar operations.

  • crosswalk
  • Library which includes WebView and some useful components.

  • Picasso
  • A powerful image downloading and caching library for Android
    This is very useful for image download using HTTP Client.

  • ROOM
  • ORMapper. Android Developer Document has this article and training material.

IDE(Eclipse, Android Studio)

Game(Android NDK)



  • Android FileTransfer
  • This tool is to see an Android device file structure for Mac OS X. You can see directory tree in Finder.

  • Java Decompiler
  • Decompile java application and library. JD-GUI is GUI tool, JD-Eclipse, JD-IntelliJ are for IDE.
    Also support Android .jar file to decompile 🙂

  • dex2jar
  • This tool convert from Android .dex file to .jar file. After jar, you can use Java Decompile to see source codes