编写system权限的apk并且将之加到Android源码中（二）

在android studio中添加system权限：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 24
    buildToolsVersion "24.0.2"
    defaultConfig {
        applicationId "com.whiteskycn.hitool"
        minSdkVersion 16
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:24.2.1'
    testCompile 'junit:junit:4.12'
    provided files(getLayoutLibPath())
}


/** get layoutlib.jar path.
 *  android.os.SystemProperties need it. */
// must called after "android" definition
def getLayoutLibPath() {
    return "${android.getSdkDirectory().getAbsolutePath()}" + "/platforms/" +
            android.compileSdkVersion + "/data/layoutlib.jar"
}