How to use registerReceiver method?

Question

I want to use dynamically registered BroadcastReceiver that has a reference to an Activity so it can modify its UI. I am using Context.registerReceiver() method but receiver's onReceive() method is never called.

Here is the sample code showing the problem:

package com.example;  import android.app.Activity; import android.app.IntentService; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.util.Log; import android.view.KeyEvent;  public class RegisterBroadcastReceiver extends Activity {      public static class MyIntentService extends IntentService {          public MyIntentService() {             super(MyIntentService.class.getSimpleName());         }          @Override         protected void onHandleIntent(Intent intent) {             Intent i = new Intent(this, MyBroadcastReceiver.class);             sendBroadcast(i);         }     }      public class MyBroadcastReceiver extends BroadcastReceiver {          @Override         public void onReceive(Context context, Intent intent) {             Log.i(MyBroadcastReceiver.class.getSimpleName(),                   "received broadcast");         }      }      /** Called when the activity is first created. */     @Override     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.main);     }      MyBroadcastReceiver mReceiver = new MyBroadcastReceiver();      @Override     protected void onResume() {         super.onResume();          IntentFilter intentFilter = new IntentFilter();         registerReceiver(mReceiver, intentFilter);     }      @Override     public boolean onKeyDown(int keyCode, KeyEvent event) {         if (keyCode == KeyEvent.KEYCODE_MENU) {             Intent i = new Intent(this, MyIntentService.class);             startService(i);         }         return super.onKeyDown(keyCode, event);     }      @Override     protected void onPause() {         super.onPause();         unregisterReceiver(mReceiver);     }  } 

Answer 1

The whole code if somebody need it.

void alarm(Context context, Calendar calendar) {     AlarmManager alarmManager = (AlarmManager)context.getSystemService(ALARM_SERVICE);      final String SOME_ACTION = "com.android.mytabs.MytabsActivity.AlarmReceiver";     IntentFilter intentFilter = new IntentFilter(SOME_ACTION);      AlarmReceiver mReceiver = new AlarmReceiver();     context.registerReceiver(mReceiver, intentFilter);      Intent anotherIntent = new Intent(SOME_ACTION);     PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, anotherIntent, 0);     alramManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);      Toast.makeText(context, "Added", Toast.LENGTH_LONG).show(); }  class AlarmReceiver extends BroadcastReceiver {          @Override     public void onReceive(Context context, Intent arg1) {         Toast.makeText(context, "Started", Toast.LENGTH_LONG).show();     } }