Android BroadcastReceiver Example of a LocalBroadcastManager

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A BroadcastReceiver is basically a mechanism to relay Intents through the OS to perform specific actions. A classic definition being

"A Broadcast receiver is an Android component which allows you to register for system or application events."

LocalBroadcastManager is a way to send or receive broadcasts within an application process. This mechanism has a lot of advantages

  1. since the data remains inside the application process, the data cannot be leaked.
  2. LocalBroadcasts are resolved faster, since the resolution of a normal broadcast happens at runtime throughout the OS.

A simple example of a LocalBroastManager is:


  Intent intent = new Intent("anEvent");
  intent.putExtra("key", "This is an event");


  1. Register a receiver
              new IntentFilter("anEvent"));
  1. A concrete object for performing action when the receiver is called
private BroadcastReceiver aLBReceiver = new BroadcastReceiver() {
    public void onReceive(Context context, Intent intent) {
        // perform action here.
  1. unregister when the view is not visible any longer.
protected void onPause() { 
    // Unregister since the activity is about to be closed. 

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