如何让广播在Android的锁屏 [英] how to get broadcast for screen lock in android

问题描述

如何获得触发屏幕在Android是锁定或在？
我试着用SCREEN_OFF＆安培; SCREEN_ON行动广播接收器，但它不工作。

 公共无效的onReceive（上下文的背景下，意图意图）{
        Log.d（XYZ，画面ON / OFF）;        Toast.makeText（背景下，银幕，10000）.show（）;
        如果（intent.getAction（）。等于（Intent.ACTION_SCREEN_ON））
        {
.......
}
}
 

在活动我已经注册像广播 -

屏幕是我的广播接收机的对象

  IntentFilter的过滤器=新的IntentFilter（Intent.ACTION_SCREEN_ON）;
            filter.addAction（Intent.ACTION_SCREEN_OFF）;
            mContext.registerReceiver（屏幕，过滤器）;
 

解决方案

调用 UpdateService.class 中的 MainActivity.class 。

startService（新意图（MainActivity.this，UpdateService.class））;

UpdateService.class

 公共类UpdateService延伸服务{    广播接收器mReceiver;
    公共静态INT countOn = 0;
    公共静态INT countOff = 0;    @覆盖
    公共无效的onCreate（）{
        super.onCreate（）;
        //注册接收处理屏幕上，屏幕关闭逻辑
        Log.i（UpdateService，开始）;
        IntentFilter的过滤器=新的IntentFilter（Intent.ACTION_SCREEN_ON）;
        filter.addAction（Intent.ACTION_SCREEN_OFF）;
        filter.addAction（Intent.ACTION_ANSWER）;
        mReceiver =新MyReceiver（）;
        registerReceiver（mReceiver，过滤器）;
    }    @覆盖
    公共无效的onDestroy（）{        unregisterReceiver（mReceiver）;
        Log.i（的onDestroy Reciever，被称为）;        super.onDestroy（）;
    }    @覆盖
    公众诠释onStartCommand（意向意图，诠释标志诠释startId）{
        // TODO自动生成方法存根
        布尔screenOn = intent.getBooleanExtra（screen_state，FALSE）;
        如果（！screenOn）{
            Log.i（screenON，被称为）;
            Log.i（viaService，CountOn =+ countOn）;            Toast.makeText（getApplicationContext（），醒，Toast.LENGTH_LONG）
                    。显示（）;
        }其他{
            Log.i（SCREENOFF，被称为）;
            Log.i（viaService，CountOff =+ countOff）;
        }
        返回START_STICKY;
    }
    @覆盖
    公众的IBinder onBind（意向意图）{
        // TODO自动生成方法存根
        返回null;
    }
}
 

Receiver类

 公共类MyReceiver扩展广播接收器{
    私人布尔SCREENOFF;    @覆盖
    公共无效的onReceive（上下文的背景下，意图意图）{
        如果（intent.getAction（）。等于（Intent.ACTION_SCREEN_OFF））{
            SCREENOFF = TRUE;
            // Log.i（通过接收器，正常SCREENOFF）;
        }否则如果（intent.getAction（）。等于（Intent.ACTION_SCREEN_ON））{
            SCREENOFF = FALSE;
        }否则如果（intent.getAction（）。等于（Intent.ACTION_ANSWER））{        }        意图I =新意图（背景下，UpdateService.class）;
        i.putExtra（screen_state，SCREENOFF）;
        context.startService（ⅰ）;
    }}
 

How to get trigger that screen is locked or on in android?? i tried using SCREEN_OFF & SCREEN_ON action in broadcast receiver but it's not working.

public void onReceive(Context context, Intent intent) {
        Log.d("XYZ", "Screen ON/OFF");

        Toast.makeText(context, "screen",10000).show();
        if(intent.getAction().equals(Intent.ACTION_SCREEN_ON))
        {
.......
}
}

in activity i have registered broadcast like-

screen is object of my broadcast receiver

IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
            filter.addAction(Intent.ACTION_SCREEN_OFF);
            mContext.registerReceiver(screen, filter);

解决方案

Call the UpdateService.class within your MainActivity.class .

startService(new Intent(MainActivity.this, UpdateService.class));

UpdateService.class

public class UpdateService extends Service {

    BroadcastReceiver mReceiver;
    public static int countOn = 0;
    public static int countOff = 0;

    @Override
    public void onCreate() {
        super.onCreate();
        // register receiver that handles screen on and screen off logic
        Log.i("UpdateService", "Started");
        IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
        filter.addAction(Intent.ACTION_SCREEN_OFF);
        filter.addAction(Intent.ACTION_ANSWER);
        mReceiver = new MyReceiver();
        registerReceiver(mReceiver, filter);
    }

    @Override
    public void onDestroy() {

        unregisterReceiver(mReceiver);
        Log.i("onDestroy Reciever", "Called");

        super.onDestroy();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        // TODO Auto-generated method stub
        boolean screenOn = intent.getBooleanExtra("screen_state", false);
        if (!screenOn) {
            Log.i("screenON", "Called");
            Log.i("viaService", "CountOn =" + countOn);

            Toast.makeText(getApplicationContext(), "Awake", Toast.LENGTH_LONG)
                    .show();
        } else {
            Log.i("screenOFF", "Called");
            Log.i("viaService", "CountOff =" + countOff);
        }


        return START_STICKY;
    }
    @Override
    public IBinder onBind(Intent intent) {
        // TODO Auto-generated method stub
        return null;
    }
}

Receiver class

public class MyReceiver extends BroadcastReceiver {
    private boolean screenOff;

    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
            screenOff = true;
            // Log.i("via Receiver","Normal ScreenOFF" );
        } else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
            screenOff = false;
        } else if(intent.getAction().equals(Intent.ACTION_ANSWER)) {

        }

        Intent i = new Intent(context, UpdateService.class);
        i.putExtra("screen_state", screenOff);
        context.startService(i);
    }

}

这篇关于如何让广播在Android的锁屏的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！