The tools needed for Android development
1) JDK
Android apps are mostly in the Java language development because you have to install the JDK. Android needs to be installed JDK1.5 more versions
2) Android SDK
The Android SDK is a Google-supplied Android software Development Kit.
3) Eclipse
Eclipse is the preferred IDE for developing Android (integrated development environment), and is recommended by Google authorities, and it is recommended to use a Eclipse3.4 version.
4) ADT
ADT is the acronym for Android Development Tools, the Android development tool, the Android development team's plug-in for developing Android, specifically for Eclipse.
Building the Android development environment
1, the JDK download and installation
JDK Download Address: http://www.oracle.com/technetwork/java/javase/downloads/index.html, here we download JDK1.6, find the following figure, click on "Download JDK "
Then go to the following page: