putExtra using pending intent not working

问题

I have written a code in my GCMIntentservice that sends push notifications to many users. I use the NotificationManager that will call DescriptionActivity class when the notification is clicked. I also send the event_id form the GCMIntentService to the DescriptionActivity

protected void onMessage(Context ctx, Intent intent) {
     message = intent.getStringExtra("message");
     String tempmsg=message;
     if(message.contains("You"))
     {
        String temparray[]=tempmsg.split("=");
        event_id=temparray[1];
     }
    nm= (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
    intent = new Intent(this, DescriptionActivity.class);
    Log.i("the event id in the service is",event_id+"");
    intent.putExtra("event_id", event_id);
    intent.putExtra("gcmevent",true);
    PendingIntent pi = PendingIntent.getActivity(this,0, intent, 0);
    String title="Event Notifier";
    Notification n = new Notification(R.drawable.defaultimage,message,System.currentTimeMillis());
    n.setLatestEventInfo(this, title, message, pi);
    n.defaults= Notification.DEFAULT_ALL;
    nm.notify(uniqueID,n);
    sendGCMIntent(ctx, message);

}

Here the event_id that I'm getting in the above method is correct i.e I always get the updated one. But in the code below (DescriptionActivity.java):

    intent = getIntent();
    final Bundle b = intent.getExtras();
    event_id = Integer.parseInt(b.getString("event_id"));

The event_id here is always "5". No matter what I putExtra in the GCMIntentService class,the event_id I get is always 5. Can somebody please point out the problem? Is is because of the pending intent? If yes, then how should I handle it?

回答1:

The PendingIntent is reused with the first Intent you provided, that's your problem.

To avoid this, use the flag PendingIntent.FLAG_CANCEL_CURRENT when you call PendingIntent.getActivity() to actually get a new one:

PendingIntent pi = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);

Alternatively, if you just want to update the extras, use the flag PendingIntent.FLAG_UPDATE_CURRENT

回答2:

The PendingIntent is reused with the first Intent you provided, as it was said by Joffrey. You can try use the flag PendingIntent.FLAG_UPDATE_CURRENT.

PendingIntent pi = PendingIntent.getActivity(this,0, intent, PendingIntent.FLAG_UPDATE_CURRENT);

回答3:

Maybe you are still using the old intent. try this:

@Override
protected void onNewIntent(Intent intent) {
    super.onNewIntent(intent);
    //try using this intent

    handleIntentExtraFromNotification(intent);
}

来源：https://stackoverflow.com/questions/16376643/putextra-using-pending-intent-not-working