Java 如何在锁定屏幕后保持手机振动？

我想让我的应用程序振动，即使你按下电源按钮关闭屏幕。就像背景一样。我尝试过很多方法，比如wakelock、intent service，但似乎都不管用。有什么想法吗工作代码示例将不胜感激

当前我的代码如下所示：

public class MainActivity extends AppCompatActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void switch_click(View v){
        Switch simpleSwitch = (Switch) findViewById(R.id.my_switch);
        Vibrator mVibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
        if(simpleSwitch.isChecked()){
            long pattern[] = {0, 100};
            mVibrator.vibrate(pattern, 0);
        }
        if(!simpleSwitch.isChecked()){
            mVibrator.cancel();
        }
    }

    @Override
    public void onBackPressed()
    {
        //Cancels vibrator when pressed back
        Vibrator mVibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
        mVibrator.cancel();
        finish();
    }
}