On Jan 23, 2012, at 6:19 AM, subsembly wrote:
> it seems that bitmap images attached as background drawables are never
> released.
They're released, they're just not released soon enough. Hopefully this will
provide some background and clarification:
http://docs.xamarin.com/android/advanced_topics/garbage_collection#Helping_the_GC
If that doesn't help, please let me know how I can improve that.
In your specific case, the problem is that Mono for Android's GC hasn't
executed, so after you rotate the screen a few times none of the previously
created Activities have been collected, and all the Java-side memory won't be
freed until the Mono for Android objects are collected.
The fix is to cause a GC by overriding Activity.OnDestroy():
protected override void OnDestroy ()
{
base.OnDestroy ();
GC.Collect ();
}
When I add the above method to the Activity, I'm able to constantly rotate my
phone without getting a crash, whereas before that change it would crash after
3 rotations.
- Jon
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