How to generate R.java

Question

I downloaded few source codes from Google source codes.

I executed them on Eclipse but R.java file is not created and therefore I got many errors saying

Answer 1

As long as you have a valid Android project, you can use aapt package to generate the R.java from resources. Here's example usage (all should be in one line):

aapt package --non-constant-id -f -m -M  
  -S  -I  
  -J 

The above can be made scriptable using ANT by using the aapt target or by simply using an exec target.