Android - How to use a local broadcast receiver?

问题

I'm trying to use a local broadcast receiver.

In order to do so I"ve done the next steps -

1) At an Activity, where Iwould like something to happen, I've created a class -

private class NewGroupReceiver extends BroadcastReceiver{

    @Override
    public void onReceive(Context context, Intent intent) {
        Log.d("The group ", "GOT IN THE RECIVING");
        Toast.makeText(this, "Working",Toast.LENGTH_SHORT).show();  
    }

}

2) At the same activity I've used the next code in order to create a receiver -

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    NewGroupReceiver receiver = new NewGroupReceiver();

    //the intent filter will be action = "com.example.demo_service.action.SERVICE_FINISHED"
    IntentFilter filter= new IntentFilter("com.example.apps.action.NEW_GROUP");

    // register the receiver:
    registerReceiver(receiver, filter);
}

3) At the a service class I've used the next code to know when something has happened-

Intent resultsIntent=new Intent("com.example.apps.action.NEW_GROUP");

LocalBroadcastManager localBroadcastManager =LocalBroadcastManager.getInstance(this);

localBroadcastManager.sendBroadcast(resultsIntent);

Now the problem is that when the thing I WOuld like to know has happen - I see the it's get into the code that I've used at step 3, but it doesen't seem to get into the BroadcastReceiver - the step 1 code.

Any idea what am I doing wrong here? Thanks for any kind of help.

回答1:

You are using the LocalBroadcastManager to send the request, but you register the receiver on the "global" Intent. You should either use LocalBroadcastManager to register the receiver or send the broadcast on the application context:

Step 2

LocalBroadcastManager.getInstance(this).registerReceiver (receiver, filter);

来源：https://stackoverflow.com/questions/23347872/android-how-to-use-a-local-broadcast-receiver

标签

android

broadcastreceiver