protected void onCreate(Bundle savedInstanceState) {protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);super.onCreate(savedInstanceState);

        //设定一像素的activity//设定一像素的activity

        Window window = getWindow();Window window = getWindow();

        window.setGravity(Gravity.START | Gravity.TOP);window.setGravity(Gravity.START | Gravity.TOP);

        WindowManager.LayoutParams params = window.getAttributes();WindowManager.LayoutParams params = window.getAttributes();

        params.x = 0;params.x = 0;

        params.y = 0;params.y = 0;

        params.height = 1;params.height = 1;

        params.width = 1;params.width = 1;

        window.setAttributes(params);window.setAttributes(params);

    }

 public void onReceive(final Context context, Intent intent) {public void onReceive(final Context context, Intent intent) {

        Log.i("ScreenStateReceiver", "---屏幕锁屏监听---");Log.i("ScreenStateReceiver", "---屏幕锁屏监听---");

        if (action.equals(Intent.ACTION_SCREEN_OFF)) {if (action.equals(Intent.ACTION_SCREEN_OFF)) {

           //屏幕锁定，开启OnePixelActivity//屏幕锁定，开启OnePixelActivity

        } else if (action.equals(Intent.ACTION_SCREEN_ON)) {else if (action.equals(Intent.ACTION_SCREEN_ON)) {

           //屏幕解锁，finish OnePixelActivity//屏幕解锁，finish OnePixelActivity

        }

    }

   private Handler mHandler;private Handler mHandler;

    private boolean isScreenOn = true;private boolean isScreenOn = true;

    private PendingIntent  pendingIntent;private PendingIntent  pendingIntent;

    private List<ScreenStateListener> screenStateListeners = null;private List<ScreenStateListener> screenStateListeners = null;

    @Override@Override

    public void onReceive(final Context context, Intent intent) {public void onReceive(final Context context, Intent intent) {

        String action = intent.getAction();String action = intent.getAction();

        if (action.equals(Intent.ACTION_SCREEN_OFF)) {if (action.equals(Intent.ACTION_SCREEN_OFF)) {

           //标记屏幕为锁屏状态//标记屏幕为锁屏状态

            isScreenOn = false;isScreenOn = false;

            //开启一像素的Activity//开启一像素的Activity

            startOnePixelActivity(context);startOnePixelActivity(context);

        } else if (action.equals(Intent.ACTION_SCREEN_ON)) {else if (action.equals(Intent.ACTION_SCREEN_ON)) {

            //标记屏幕为解屏状态//标记屏幕为解屏状态

            isScreenOn = true;     isScreenOn = true;     

            if(pendingIntent!=null){if(pendingIntent!=null){

                pendingIntent.cancel();pendingIntent.cancel();

            }

        }

    }

  //开启一像素的Activity//开启一像素的Activity

 private void startOnePixelActivity(final Context context){private void startOnePixelActivity(final Context context){

        if(mHandler==null){if(mHandler==null){

            mHandler = new Handler(Looper.myLooper());mHandler = new Handler(Looper.myLooper());

        }

        mHandler.postDelayed(new Runnable() {mHandler.postDelayed(new Runnable() {

            @Override@Override

            public void run() {public void run() {

              //如果屏幕此时已经打开，则不执行//如果屏幕此时已经打开，则不执行

                if(isScreenOn){if(isScreenOn){

                    return;return;

                }

                if(pendingIntent!=null){if(pendingIntent!=null){

                    pendingIntent.cancel();pendingIntent.cancel();

                }

                Intent startOnePixelActivity = new Intent(context, OnePixelActivity.class);Intent startOnePixelActivity = new Intent(context, OnePixelActivity.class);

                startOnePixelActivity.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);startOnePixelActivity.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);

                //启动一像素包活activity//启动一像素包活activity

                pendingIntent = PendingIntent.getActivity(context, 0, startOnePixelActivity, 0);pendingIntent = PendingIntent.getActivity(context, 0, startOnePixelActivity, 0);

                try {try {

                    pendingIntent.send();pendingIntent.send();

                } catch (Exception e) {catch (Exception e) {

                    e.printStackTrace();e.printStackTrace();

                }

                notifyScreenOff();notifyScreenOff();

            }

        },1000);1000);

    }

  <activity android:name=".OnePixelActivity"<activity android:name=".OnePixelActivity"

            android:theme="@style/onePixelActivity"android:theme="@style/onePixelActivity"

            android:launchMode="singleInstance"android:launchMode="singleInstance"

            android:excludeFromRecents="true"/>android:excludeFromRecents="true"/>

//OnePixelActivity的onResume

   protected void onResume() {protected void onResume() {

        super.onResume();super.onResume();

        if (DeviceUtils.isScreenOn(this)) {//如果屏幕已经打开if (DeviceUtils.isScreenOn(this)) {//如果屏幕已经打开

            finish();finish();

        }

    }

if(screenOn){//屏幕解锁(screenOn){//屏幕解锁

    puseMp3();puseMp3();

}else{//锁屏else{//锁屏

   playMp3();playMp3();

//播放无声音乐的Service

public class KeepAliveService extends Service { class KeepAliveService extends Service {

    private boolean isScreenON = true;//控制暂停private boolean isScreenON = true;//控制暂停

    private MediaPlayer mediaPlayer;private MediaPlayer mediaPlayer;

    //锁屏广播监听//锁屏广播监听

    private ScreenStateReceiver screenStateReceiver;private ScreenStateReceiver screenStateReceiver;

    @Override@Override

    public int onStartCommand(Intent intent, int flags, int startId) {public int onStartCommand(Intent intent, int flags, int startId) {

        //注册锁屏广播//注册锁屏广播

        registerScreenStateReceiver();registerScreenStateReceiver();

        //初始化播放器//初始化播放器

        initMediaPlayer();initMediaPlayer();

        return START_STICKY;return START_STICKY;

    }

 }

//KeepAliveService的onStartCommand方法

 public int onStartCommand(Intent intent, int flags, int startId) {public int onStartCommand(Intent intent, int flags, int startId) {

        //省略注册锁屏广播以及初始化播放器的代码//省略注册锁屏广播以及初始化播放器的代码

       //将自己设置为前台Service//将自己设置为前台Service

        startForeground(this);startForeground(this);

     //启动HideNotificationService//启动HideNotificationService

      startService(new Intent(this, HideNotificationService.class));startService(new Intent(this, HideNotificationService.class));

        return START_STICKY;return START_STICKY;

    }