Compile Android Apps

Command
1. make: compile all Android system
2. make [package name]: the package name can be found in packages/apps/xx/Android.mk
    or
    mmm packages/apps/Package_name
    The APK and odex will generate in out/target/product/generic/system/app/xxx.apk

3. make snod: this command will regenerate system.img
4. Remove default sign key
 

   zip –d xxx.apk META-INF/*

Put 3rd apk into system.img
1. put apk into out/target/product/generic/system/app/
2. make snod