Local Broadcast Implementation

Local broadcasts using LocalBroadcastManager are confined to the application context.

Sending a Broadcast

Intent intent = new Intent("com.example.update");
LocalBroadcastManager.getInstance(BroadActivity2.this).sendBroadcast(intent);

Registering a Receiver

mBroadcast = new MyBroadcast();
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction("com.example.update");
LocalBroadcastManager.getInstance(this).registerReceiver(mBroadcast, intentFilter);

Handling Broadcasts

private class MyBroadcast extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals("com.example.update")) {
            mTvTest.setText("123");
        }
    }
}

Cleanup

@Override
protected void onDestroy() {
    super.onDestroy();
    LocalBroadcastManager.getInstance(this).unregisterReceiver(mBroadcast);
}