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：

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1. apply plugin: 'com.android.application'
   
2. 
   
3. android {
   
4.     compileSdkVersion 24
   
5.     buildToolsVersion "24.0.2"
   
6.     defaultConfig {
   
7.         applicationId "com.whiteskycn.hitool"
   
8.         minSdkVersion 16
   
9.         targetSdkVersion 24
   
10.         versionCode 1
    
11.         versionName "1.0"
    
12.         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    
13.     }
    
14.     buildTypes {
    
15.         release {
    
16.             minifyEnabled false
    
17.             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    
18.         }
    
19.     }
    
20. }
    
21. 
    
22. dependencies {
    
23.     compile fileTree(dir: 'libs', include: ['*.jar'])
    
24.     androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    
25.         exclude group: 'com.android.support', module: 'support-annotations'
    
26.     })
    
27.     compile 'com.android.support:appcompat-v7:24.2.1'
    
28.     testCompile 'junit:junit:4.12'
    
29.     provided files(getLayoutLibPath())
    
30. }
    
31. 
    
32. 
    
33. /** get layoutlib.jar path.
    
34.  * android.os.SystemProperties need it. */
    
35. // must called after "android" definition
    
36. def getLayoutLibPath() {
    
37.     return "${android.getSdkDirectory().getAbsolutePath()}" + "/platforms/" +
    
38.             android.compileSdkVersion + "/data/layoutlib.jar"
    
39. }