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Android APIs
public class

LocalBroadcastManager

extends Object
java.lang.Object
   ↳ android.support.v4.content.LocalBroadcastManager

Class Overview

Helper to register for and send broadcasts of Intents to local objects within your process. This is has a number of advantages over sending global broadcasts with sendBroadcast(Intent) :

  • You know that the data you are broadcasting won't leave your app, so don't need to worry about leaking private data.
  • It is not possible for other applications to send these broadcasts to your app, so you don't need to worry about having security holes they can exploit.
  • It is more efficient than sending a global broadcast through the system.

Summary

Public Methods
static LocalBroadcastManager getInstance ( Context context)
void registerReceiver ( BroadcastReceiver receiver, IntentFilter filter)
Register a receive for any local broadcasts that match the given IntentFilter.
boolean sendBroadcast ( Intent intent)
Broadcast the given intent to all interested BroadcastReceivers.
void sendBroadcastSync ( Intent intent)
Like sendBroadcast(Intent) , but if there are any receivers for the Intent this function will block and immediately dispatch them before returning.
void unregisterReceiver ( BroadcastReceiver receiver)
Unregister a previously registered BroadcastReceiver.
[Expand]
Inherited Methods
From class java.lang.Object

Public Methods

public static LocalBroadcastManager getInstance ( Context context)

public void registerReceiver ( BroadcastReceiver receiver, IntentFilter filter)

Register a receive for any local broadcasts that match the given IntentFilter.

Parameters
receiver The BroadcastReceiver to handle the broadcast.
filter Selects the Intent broadcasts to be received.

public boolean sendBroadcast ( Intent intent)

Broadcast the given intent to all interested BroadcastReceivers. This call is asynchronous; it returns immediately, and you will continue executing while the receivers are run.

Parameters
intent The Intent to broadcast; all receivers matching this Intent will receive the broadcast.

public void sendBroadcastSync ( Intent intent)

Like sendBroadcast(Intent) , but if there are any receivers for the Intent this function will block and immediately dispatch them before returning.

public void unregisterReceiver ( BroadcastReceiver receiver)

Unregister a previously registered BroadcastReceiver. All filters that have been registered for this BroadcastReceiver will be removed.

Parameters
receiver The BroadcastReceiver to unregister.