I have implemented GCM in my android application and it's working fine with receiving messages. The BroadcastReceiver is set up in the manifest-file according to the examples provided by Google.
My question is the following: If the user is having the application open and I want to update some results in that view - how can this be done? I was first thinking of registering this activity as a listener on whatever the BroadCastReceiver recieves. However, this must then be a static list of listeners, as a new instance of the BroadcastReceiver will be set up - but maybe this is not the way to do this.
This is what I currently have
public class GCMBroadcastReceiver extends WakefulBroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
ComponentName comp = new ComponentName(context.getPackageName(),
GCMIntentService.class.getName());
startWakefulService(context, (intent.setComponent(comp)));
setResultCode(Activity.RESULT_OK);
}
}
public class GCMIntentService extends IntentService {
public static final int NOTIFICATION_ID = 1;
private NotificationManager mNotificationManager;
NotificationCompat.Builder builder;
public GCMIntentService() {
super("GCMIntentService");
}
@Override
protected void onHandleIntent(Intent intent) {
Bundle extras = intent.getExtras();
GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this);
String messageType = gcm.getMessageType(intent);
if (!extras.isEmpty()) {
if (GoogleCloudMessaging.
MESSAGE_TYPE_MESSAGE.equals(messageType)) {
/** How to check if the activity
GameActivity is running, and hence send an
update signal to it? If it's not running a
notification should be created.
**/
}
}
GCMBroadcastReceiver.completeWakefulIntent(intent);
}
}
Here's the important part for this in the manifest-file:
<receiver
android:name="q.w.e.gcm.GCMBroadcastReceiver"
android:permission="com.google.android.c2dm.permission.SEND" >
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<category android:name="q.w" />
</intent-filter>
</receiver>
<service android:name="q.w.e.gcm.GCMIntentService" />
Any advice?
Thanks!