Android获取超级管理员权限的实现

public class MyDeviceAdminReceiver extends DeviceAdminReceiver{
 @Override
 public void onReceive(Context context,Intent intent){
  //TODO
 }
}

<receiver
 android:name="com.example.receiver.MyDeviceAdminReceiver"
 android:permission="android.permission.BIND_DEVICE_ADMIN">
 <meta-data
  android:name="android.app.device_admin"
  android:resource="@xml/device_admin_sample"/>
 <intent-filter>
  <action android:name="android.app.action.DEVICE_ADMIN_ENABLED"/>
 </intent-filter>
</receiver>

<device-admin xmlns:android="http://schemas.android.com/apk/res/android">
<uses-policies>
 <force-lock/><!--强制锁屏-->
 <wipe-data/><!--清除数据-->
 <reset-password/><!--重置密码-->
 ...
</uses-policies>

// 判断是否具有ROOT权限
public static boolean is_root(){
 boolean res = false;
 try{ 
  if ((!new File("/system/bin/su").exists()) && 
   (!new File("/system/xbin/su").exists())){
  res = false;
 } 
 else {
  res = true;
 };
 } 
 catch (Exception e) { 
 
 } 
 return res;
}

// 获取ROOT权限
public void get_root(){
 if (is_root()){
  Toast.makeText(mCtx, "已经具有ROOT权限!", Toast.LENGTH_LONG).show();
 }
 else{
  try{
   progress_dialog = ProgressDialog.show(mCtx, 
     "ROOT", "正在获取ROOT权限...", true, false);
   Runtime.getRuntime().exec("su");
  }
  catch (Exception e){
   Toast.makeText(mCtx, "获取ROOT权限时出错!", Toast.LENGTH_LONG).show();
  }
 }

}