There is a difference while installing Android SDK in Eclipse 64bit and in 32bit. If you want to install in 64bit then before doing that you check this site:
If you end up with this problem :
Failed to get the adb version: Cannot run program "/home/johan/devtools/android/android-sdk-linux_x86-1.6_r1/tools/adb": java.io.IOException: error=2, No such file or directory
If you still getting a problem saying that :
Android requires compiler compliance level 5.0 or 6.0. Found ‘1.4’ instead. Please use Android Tools > Fix Project Properties.
This problem will occur if you are importing a new project into your work space to resolve this
right click on the project->properties->Java Compiler->compiler compliance level change it to 1.6
your problem will be solved 🙂 hope this helps