install Android development environment in the Ubuntu

1. install JDK(jdk-7u17-linux-i586.tar.gz)(http://www.oracle.com/technetwork/java/javase/downloads/index.html)

mkdir /usr/lib/jdk

cd /usr/lib/jdk

tar -xzvf ~/Downloads/android/jdk-7u17-linux-i586.tar.tar.gz

chmod -R 777 /usr/lib/jdk

vim ~/.bashrc

export JAVA_HOME=/usr/lib/jdk/jdk1.7.0_17

export JRE_HOME=/usr/lib/jdk/jdk1.7.0_17/jre

export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH

export CLASSPATH=$CLASSPATH:.:$JAVA_HOME/lib:$JAVA_HOME/jre/lib

source .bashrc

update-alternatives --install /usr/bin/java java /usr/lib/jdk/jdk1.7.0_17/bin/java 300

update-alternatives --install /usr/bin/javac javac /usr/lib/jdk/jdk1.7.0_17/bin/javac 300

java -version

2. install Eclipse(eclipse-java-juno-SR2-linux-gtk.tar.gz)(http://www.eclipse.org/downloads/)

mkdir ~/android/eclipse

cd ~/android/eclipse

tar -xzvf ~/Downloads/android/eclipse-java-juno-SR2-linux-gtk.tar.gz

eclipse/eclipse

eclipse

3. install ADT Pulgin

// open eclipse until the window view has done.

help --> Install Software New... --> "add..." -->Name:ADT Pulgin Location:https//dl-ssl.google.com/android/eclipse/ --> "Next" --> .... -->done.

4. configuration Android SDK to eclipse

// open eclipse until the window view has done.

// download "android-sdk_r21.1-linux.tgz"
(http://developer.android.com/sdk/index.html) and
copy to "~/Downloads/android"

cd ~/android

tar -xzvf /Downlods/android/android-sdk_r21.1-linux.tgz

Windows-->Reference..-->Android-->Android SDK -->(SDK Path) -->....-->apply-->ok