Push Notifications and Android activities

Question

I am a newbie in android and push notifications and i have built a PHP page to send such push messages. as long as the app is in foreground - i can detect and show an alert dialog. when onReceive() is called. when i press the "Back" button , the app (i guess) closes and the push notifications won't wake it up. is it possible to do so ? (Case study from a different platfom - facebook application not running but push can activate it)

score 1 · Answer 1 · answered Jan 08 '12 at 13:05

1

You can use Services from Android.

public class MyService extends Service {
private Timer timer;

@Override
public void onCreate() {
super.onCreate();
timer = new Timer();
timer.scheduleAtFixedRate(new TimerTask() {
    @Override
    public void run() {
        doSomethingInBackground
    }, 0, 1000);
}
}

The Android Dev Guide has a lot of samples and tutorials about services

answered Jan 08 '12 at 13:05

Stephan

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so i should move my methods for starting the receivers to the service class? thanx for the reply!!! – Yotamix Jan 08 '12 at 13:07
You can also start an Activity from your Service or display a notification at the status bar of the phone. – Stephan Jan 08 '12 at 13:15
when a notification comes , the status bar shows it has arrived , but i what my app to show it in a dialog with Yes/No buttons. which means i need my app to come to the foreground to do so. – Yotamix Jan 08 '12 at 13:18
To get the app(the Activity) in the foreground have a look at this link: [link](http://stackoverflow.com/a/3607934/1031556) – Stephan Jan 08 '12 at 13:26
i have started the registration for notification in the service , which was started in the activity. now if i try to get an alert out when the message arrives - it crashes : either babToken - no window in the service , or the activity doesnt exists and it is null. – Yotamix Jan 08 '12 at 13:55

score 1 · Answer 2 · answered Jan 08 '12 at 13:07

1

Have a look to C2DM Google solution.

http://code.google.com/intl/fr-FR/android/c2dm/

answered Jan 08 '12 at 13:07

ChristopheCVB

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i have , as mentioned in comments for previous answers :-) thanx! – Yotamix Jan 08 '12 at 13:10

score 0 · Answer 3 · edited May 23 '17 at 10:34

0

Android can close your app anytime it gets hibernated if it needs the memory. You can probably do what you're asking with a service.

Also: Push Notifications in Android Platform

edited May 23 '17 at 10:34

Community

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answered Jan 08 '12 at 12:55

ethrbunny

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i wish not to use mqtt , i implemented c2dm as shown with a registration reciever and message reciever . i can see in the emulator that the notification arrives on the top bar , but pressing it shows an empty screen and when the message gets in , the app isn't being activated. i have inserted logs to see the calls of methods and i see it is being closed every time i press the "Back" button in the emulator. is their a way to keep it alive so when a message gets in , i can see my app/dialog box ? – Yotamix Jan 08 '12 at 13:06

Push Notifications and Android activities

3 Answers3