Send array through intent?

Question

I am trying to send an array of StatusBarNotifications to another service of mine so I have tried this:

Service that extends NotificationListenerService:

@Override
public void onNotificationPosted(StatusBarNotification sbn) {
    // TODO Auto-generated method stub
    StatusBarNotification[] activeN = super.getActiveNotifications();               

    Intent i = new Intent("com.project.now.CORETWO");
    i.putExtra("activenotfications", activeN);
    startService(i);
}

Service to receive array through intent:

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    // TODO Auto-generated method stub
    Log.i("abc", "onStartCommand"); 
    activeNotifications = (StatusBarNotification[]) intent.getParcelableArrayExtra("activenotifications"); //This line throws exception
}

Edit

However I get a ClassCastException(marked above with comment)

Here is the log:

08-22 22:49:22.319: E/AndroidRuntime(20801): FATAL EXCEPTION: main
08-22 22:49:22.319: E/AndroidRuntime(20801): Process: com.project.now, PID: 20801
08-22 22:49:22.319: E/AndroidRuntime(20801): java.lang.RuntimeException: Unable to start service com.project.now.CoreTwo@425ed8d0 with Intent { act=com.project.now.CORETWO (has extras) }: java.lang.ClassCastException: android.os.Parcelable[] cannot be cast to android.service.notification.StatusBarNotification[]

I read quite a bit about sending objects through intents and about implementing Parcelable, although it was pretty complicated, see here for example. But from what I can see StatusBarNotification (see API doc here) already implements Parcelable, thus I should be able to send it through an intent with all of its content, right?

Would really appreciate some help here as I am stuck, thanks

Same principle: http://stackoverflow.com/questions/1115230/casting-object-array-to-integer-array-error — Brodo Fraggins, Aug 22 '14 at 22:26

Damian Petla · Accepted Answer · 2014-08-23T06:45:53.400

2

Instead

activeNotifications = (StatusBarNotification[]) intent.getExtras().get("activenotifications");

call

Parcelable[] parcelable = intent.getParcelableArrayExtra("activenotifications");
StatusBarNotification[] sbn = Arrays.copy(parcelable, parcelable.lenght, StatusBarNotification[].class);

edited Aug 23 '14 at 06:45

answered Aug 22 '14 at 16:22

Damian Petla

8,963
5
44
47

Thanks for the suggestion, but I still get a NullPointerException at the same point. Any idea why that could be? – REG1 Aug 22 '14 at 18:56
I realized that I had spelt the tag incorrectly (they didn't match), that was a stupid mistake. However, I still get an Exception (ClassCastException) when I try to receive the intent (see my code). Would appreciate it if you could look at it again, thanks again – REG1 Aug 22 '14 at 22:24
1

I was rushing a bit with my answer. Of course this casting would not work. You already got it right from others but I have updated my answer to be complete and useful for other SO visitors. – Damian Petla Aug 23 '14 at 06:47

score 1 · Answer 2 · edited May 23 '17 at 11:53

1

For the ClassCastException, see: I don't get why this ClassCastException occurs

Basically you take the Parcelable array, iterate over it, and copy the items into a StatusBarNotification array by casting the items while iterating.

edited May 23 '17 at 11:53

Community

1
1

answered Aug 22 '14 at 22:29

Daniel Zolnai

16,487
7
59
71

Thanks, for the answer, I used the Arrays.copyOf() method which seems to do the whole process for me (suggested by Brodo Fraggins) – REG1 Aug 22 '14 at 23:05

Send array through intent?

2 Answers2