I want to send a heartbeat from my application to the GCM server, so the connection will stay alive.
How can I do that, and how can I know the URL of my GCM server??
Thanks in advance!!
This class can sent the proper intents
public class GcmKeepAlive {
protected CountDownTimer timer;
protected Context mContext;
protected Intent gTalkHeartBeatIntent;
protected Intent mcsHeartBeatIntent;
public GcmKeepAlive(Context context) {
mContext = context;
gTalkHeartBeatIntent = new Intent(
"com.google.android.intent.action.GTALK_HEARTBEAT");
mcsHeartBeatIntent = new Intent(
"com.google.android.intent.action.MCS_HEARTBEAT");
}
public void broadcastIntents() {
System.out.println("sending heart beat to keep gcm alive");
mContext.sendBroadcast(gTalkHeartBeatIntent);
mContext.sendBroadcast(mcsHeartBeatIntent);
}
}
if you just want to send the heartbeat you can do the following in an Activity
GcmKeepAlive gcmKeepAlive = new GcmKeepAlive(this);
gcmKeepAlive.broadcastIntents();
I don't think you need to set any additional permissions for this but here are the gcm related permissions I have in my manifest
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<permission
android:name=your_package_name.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
<uses-permission android:name="your_package_name.permission.C2D_MESSAGE" />
If you want to send them on a regular basis, here is how I am doing that:
public class GcmKeepAliveBroadcastReceiver extends BroadcastReceiver {
private GcmKeepAlive gcmKeepAlive;
@Override
public void onReceive(Context context, Intent intent) {
System.out.println("inside gcm keep alive receiver");
gcmKeepAlive = new GcmKeepAlive(context);
gcmKeepAlive.broadcastIntents();
}
}
I also have a service that has an Dagger injected alarmmanger and pendingintent
@Inject AlarmManager alarmManager;
@Inject PendingIntent gcmKeepAlivePendingIntent;
alarmManager.setInexactRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, 1000, 4*60*1000, gcmKeepAlivePendingIntent);
Here is the section of the Dagger module that provides the alarm manager and pending intent. There are several ways to have an alarm manager periodically call a method, so assuming you don't use Dagger, you should still be able to pull out the relevant parts. Your question was how to send the heartbeat, not how to use an alarm manager. There are lots of answers to that already so search on that.
@Provides PendingIntent provideGcmKeepAlivePendingIntent() {
System.out.println("pending intent provider");
Intent gcmKeepAliveIntent = new Intent("com.gmail.npnster.first_project.gcmKeepAlive");
return PendingIntent.getBroadcast(mContext, 0, gcmKeepAliveIntent, PendingIntent.FLAG_CANCEL_CURRENT);
}
@Provides AlarmManager provideGcmKeepAliveAlarmManager() {
return (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE);
}
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