public final class Constants {     ...     // Defines a custom Intent action     public static final String BROADCAST_ACTION =         "com.example.android.threadsample.BROADCAST";     ...     // Defines the key for the status "extra" in an Intent     public static final String EXTENDED_DATA_STATUS =         "com.example.android.threadsample.STATUS";     ... } public class RSSPullService extends IntentService { ...     /*      * Creates a new Intent containing a Uri object      * BROADCAST_ACTION is a custom Intent action      */     Intent localIntent =             new Intent(Constants.BROADCAST_ACTION)             // Puts the status into the Intent             .putExtra(Constants.EXTENDED_DATA_STATUS, status);     // Broadcasts the Intent to receivers in this app.     LocalBroadcastManager.getInstance(this).sendBroadcast(localIntent); ... }

// Broadcast receiver for receiving status updates from the IntentService private class ResponseReceiver extends BroadcastReceiver {     // Prevents instantiation     private DownloadStateReceiver() {     }     // Called when the BroadcastReceiver gets an Intent it's registered to receive     @     public void onReceive(Context context, Intent intent) { ...         /*          * Handle Intents here.          */ ...     } }

// Class that displays photos public class DisplayActivity extends FragmentActivity {     ...     public void onCreate(Bundle stateBundle) {         ...         super.onCreate(stateBundle);         ...         // The filter's action is BROADCAST_ACTION         IntentFilter mStatusIntentFilter = new IntentFilter(                 Constants.BROADCAST_ACTION);           // Adds a data filter for the HTTP scheme         mStatusIntentFilter.addDataScheme("http");         ...

  // Instantiates a new DownloadStateReceiver         DownloadStateReceiver mDownloadStateReceiver =                 new DownloadStateReceiver();         // Registers the DownloadStateReceiver and its intent filters         LocalBroadcastManager.getInstance(this).registerReceiver(                 mDownloadStateReceiver,                 mStatusIntentFilter);         ...

  /*          * Instantiates a new action filter.          * No data filter is needed.          */         statusIntentFilter = new IntentFilter(Constants.ACTION_ZOOM_IMAGE);         ...         // Registers the receiver with the new filter         LocalBroadcastManager.getInstance(getActivity()).registerReceiver(                 mDownloadStateReceiver,                 mIntentFilter);