Question

请在您不喜欢我的问题之前，请阅读详细信息..我想要做的是在屏幕关闭时使用广播接收器，所以我希望我的应用程序在屏幕关闭时启动..这是我的广播接收者代码：

public class BootReceiver extends BroadcastReceiver {
    public boolean screenoff;

    @Override
    public void onReceive(Context context, Intent intent) {
        // TODO Auto-generated method stub

        if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
            screenoff = true;
        } else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
            screenoff = false;
        }
         Intent intent1 = new Intent(context, ShakeService.class);
         intent1.putExtra("screen_state", screenoff);
            context.startService(intent1);

    }

这是服务代码：

public class ShakeService extends Service{

    @Override
    public IBinder onBind(Intent intent) {
        // TODO Auto-generated method stu       
            return null;
    }
     @Override
     public void onCreate() {
         super.onCreate();
         // REGISTER RECEIVER THAT HANDLES SCREEN ON AND SCREEN OFF LOGIC
         IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
         filter.addAction(Intent.ACTION_SCREEN_OFF);
         BroadcastReceiver mReceiver = new BootReceiver();
         registerReceiver(mReceiver, filter);
     }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        try{

            Intent intent1 = new Intent(getApplicationContext(), SplashScreen.class)
            .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        startActivity(intent1);

    } catch (Exception e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
    }
    return START_STICKY;


}
}

这是我从服务中调用的启动画面活动：

public class SplashScreen extends Activity {
    private static int SPLASH_TIME_OUT=3000;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //Remove title bar
        this.requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_splash_screen);

        ImageView imageView = (ImageView) findViewById(R.id.imageView1);

        new Handler().postDelayed(new Runnable(){
            public void run(){
                Intent i =new Intent(SplashScreen.this,HomeScreen.class);
                startActivity(i);
                finish();
            }
        },SPLASH_TIME_OUT);
    }
     @Override
        protected void onResume() {

            IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
            BroadcastReceiver mReceiver = new BootReceiver();
            registerReceiver(mReceiver, filter);
            super.onResume();
        }

        @Override
        protected void onPause() {
          //  mSensorManager.unregisterListener(mShakeDetector);

                BroadcastReceiver mReceiver = new BootReceiver();
                unregisterReceiver(mReceiver);
            super.onPause();
        }   
}

你可以注意到我已经取消注册了我的接收器，但我仍然在logcat中看到这个：

 leaked Intent Receiver are you missing a call to unregisterReceiver??

Answer 1

我同意在onResume（）中注册接收器并在onPause（）中取消注册它的方法。当应用程序进入和退出范围时，这会有所帮助。我对您尝试使用您的应用做了什么感到有些困惑，但最初我看到您在onPause（）中创建了一个新的braodcast接收器实例并取消注册。尝试使用相同的实例取消注册。此外，如果您希望您的服务在后台继续运行，您可能需要查看部分唤醒锁的实现，以便在屏幕保持关闭时保持应用程序的CPU运行。您能否提供有关该应用目的的更多详细信息？

泄露的Intent Receiver错过了对unregisterReceiver的调用

1 个答案: