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

Put 3rd apk into system.img
1. put apk into out/target/product/generic/system/app/
2. make snod
or
1. mkdir packages/apps/MyApp
2. vi Android.mk
LOCAL_PATH:=$(call my-dir)
include $(CLEAR_VARS)
LOCAL_POST_PROCESS_COMMAND:=$(shell cp -r $(LOCAL_PATH)/*.apk $TARGET_OUT)/app/)
3. make


Generate AIDL stub
1. make: compile all Android system
2. All system AIDL will convert java code in android_source/out/target/common/obj/JAVA_LIBRARIES/.....