Android APK获取平台系统签名权限

1.修改AndroidManifest.xml，改变uid为android.uid.system，使之与Settings能够共享数据空间。

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.txx.test4bluetooth"
    android:versionCode="1"
    android:versionName="1.0"
    android:sharedUserId="android.uid.system" >

LOCAL_PATH := $(call my-dir)

#include $(CLEAR_VARS)
#LOCAL_PREBUILT_STATIC_JAVA_LIBRARIES := lib_fastjson:libs/fastjson-1.2.33.jar
#LOCAL_MODULE_TAGS := optional
#include $(BUILD_MULTI_PREBUILT)

include $(CLEAR_VARS)
${warning "Hello Test4Bluetooth"} 

LOCAL_PROGUARD_ENABLED := disabled
#LOCAL_PROGUARD_FLAG_FILES := proguard.flags

LOCAL_STATIC_JAVA_LIBRARIES := \
    android-support-v4
#    lib_fastjson


LOCAL_MODULE_TAGS := optional

LOCAL_SRC_FILES := $(call all-subdir-java-files)
LOCAL_RESOURCE_DIR := $(LOCAL_PATH)/res
LOCAL_PACKAGE_NAME := Test4Bluetooth
LOCAL_CERTIFICATE := platform

#LOCAL_OVERRIDES_PACKAGES := Home

include $(BUILD_PACKAGE)


# ============================================================

# Also build all of the sub-targets under this one: the shared library.
include $(call all-makefiles-under,$(LOCAL_PATH))

说明：

这里遗留里 一个问题，本demo原本使用了fastjson jar包，但是发现无法通过以上Makefile编译，使用Eclipse和AS中gradle可以编译通过。

参考帖子：

Android中MK文件的写法 ：http://blog.csdn.net/u012554768/article/details/21107275