Android Learning--apk Packaging process

1. Using the AAPT tool, generate the corresponding id,id for the resource files in all RES directories to be placed in the R.java file.

2. Javac compiler, converts all Java files into class files, where the inner class generates. class files, named in the mainactivity$ inner class. Class R$string.class, etc.

3. Extract the common constants in class to generate the Dex file

4. AAPT the generated menifest+dex+resource+ program signature into a ZIP format, which is actually the APK format. Description, Meta-inf is the program signature information