Yep, You don't directly see it, but if i have understood older posts correctly, sBackground has a reference to a context that was used when it was created. This context is the activity-context that holds on to the activity that originally was used when creating sBackground.
So, via via, sBackground is referring to the activity that was used when sBackground was created. A configuration change destroys the activity and creates a brand-new one... If all it OK, you should only have on activity (the new one) and the old one should be a candidate for garbage collection. But sBackground is (indirectly) still referencing the old activity and it will not be garbage collected. Don't cache the drawable (in a static). But you can cache the bitmap from that drawable: sBackgroundBitmap = ((BitmapDrawable)getDrawable(R.drawable.large_bitmap)).getBitmap(); On Apr 10, 4:51 am, Michael Rueger <[email protected]> wrote: > On 4/10/2010 10:38 AM, NoraBora wrote: > > > I understand sBackground has a reference to TextView, and the TextView > > has a reference to Activity. > > I know when a device is rotated, Activity is destroyed and created > > again. > > > but I think when a new Activity is created, sBackground setCallback a > > new TextView and the TextView has reference to the new Activity. > > > Then the old TextView and the old Activity is not refered by > > sBackground so they can be garbage-collected. > > which means this code has no memory-leaks. > > You are basically right, it is not a leak in the "classical" C-style sense. > > But... > An Activity is also destroyed when you navigate back in the activity > stack within your own application and the above code (or rather the > static variable) would hold on to the activity needlessly. > > Michael -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en To unsubscribe, reply using "remove me" as the subject.
