Android 默认打开应用的权限

有项目需要客户要安装第三方软件，但是要手动点击打开权限，就想不动手就打开。

//安装第三方软件，修改方式

frameworks\base\services\core\java\com\android\server\pm\PackageManagerService.java

//找到如下源码：

//有三种方式，但是只有1 或 3 ，两种方式有用

??? // Now that we successfully installed the package, grant runtime
??? // permissions if requested before broadcasting the install. Also
??? // for legacy apps in permission review mode we clear the permission
??? // review flag which is used to emulate runtime permissions for
??? // legacy apps.
??? if (grantPermissions) {
??????? final int callingUid = Binder.getCallingUid();
??????? mPermissionManager.grantRequestedRuntimePermissions(
??????????????? res.pkg, res.newUsers, grantedPermissions, callingUid);
??? }
?? ?
??? //如下修改
??? if (packageName.equals("com.android.test")) {
??????? final int callingUid = Binder.getCallingUid();
?????? ?
??????? //1 该方法打开所有请求的权限
??????? mPermissionManager.grantRequestedRuntimePermissions(
??????????????? res.pkg, res.newUsers, grantedPermissions, callingUid);
?????? ?
??????? //2 该方法似乎不起作用
??????? //grantRuntimePermission(packageName,"android.permission.SYSTEM_OVERLAY_WINDOW",res.uid);
??????? //grantRuntimePermission(packageName,"android.permission.SYSTEM_ALERT_WINDOW",res.uid);
??????? //grantRuntimePermission(packageName,"android.permission.MANAGE_APP_ALL_FILES_ACCESS_PERMISSION",res.uid);
?????? ?
??????? //3 只打开一个 SYSTEM_ALERT_WINDOW 权限
??????? AppOpsManager mAppOpsManager = mContext.getSystemService(AppOpsManager.class);
??????? mAppOpsManager.setMode(AppOpsManager.OP_SYSTEM_ALERT_WINDOW,
??????????? res.uid, packageName,AppOpsManager.MODE_ALLOWED);
??? }
???

//内置应用权限修改方式：

frameworks\base\services\core\java\com\android\server\pm\permission\DefaultPermissionGrantPolicy.java

private void grantDefaultSystemHandlerPermissions(PackageManagerWrapper pm, int 
userId) {

//末尾加入

grantMyPermissions(pm, "com.android.test", userId);

}

private void grantMyPermissions(PackageManagerWrapper pm,String pkg,int userId){
    Log.i(TAG,"other package Permissions");
    PackageInfo pkginfo = pm.getPackageInfo(pkg);
    if(pkginfo==null){
        return;
    }
    Set<String> permissions = new ArraySet<>();
    permissions.add("android.permission.SYSTEM_OVERLAY_WINDOW");
    permissions.add("android.permission.SYSTEM_ALERT_WINDOW");
    permissions.add("android.permission.WRITE_EXTERNAL_STORAGE");
    permissions.add("android.permission.READ_EXTERNAL_STORAGE");
    grantRuntimePermissions(pm,pkginfo, permissions,false, userId);
}