/system/app 下加入packages/apps里的应用

$Android/device/samsung/xxxx/device.mk

PRODUCT_PACKAGES += \
        VoiceDialer \
        SpeechRecorder \
        LiveWallpapersPicker \
        LiveWallpapers \
        MagicSmokeWallpapers \
        VisualizationWallpapers \
        librs_jni  \
        CoverMe

  加入coverme

在vender 或者 packages/apps  建立CoverMe工程，并书写Android.mk文件

LOCAL_PATH:= $(call my-dir)
include $(CLEAR_VARS)

LOCAL_MODULE_TAGS := optional
LOCAL_SRC_FILES := $(call all-subdir-java-files)

LOCAL_PACKAGE_NAME := CoverMe 

include $(BUILD_PACKAGE)

这样，编译后的image里就有CoverMe.apk这个文件了