> > In the vast majority of cases where I've seen this behavior, it is because > in your delegate handler for the UIImagePickerController, you assign the > returned image directly to a UIImageView that you have in your view > hierarchy. If you've recently gotten a memory warning, then this image view > is either nil, or will be released very soon, and you will end up with a > view that has no image. >
Thanks for that observation, David. But the entire screen is white; there's not even the status bar visible. Our app doesn't have any full-screen UIImageView. The only one involved in this process is confined to part of the screen. I wonder if there's a bug somewhere that's revealed by our particular scenario, which consists of these steps: 1. We're on the root view of our tab (the root view of the navigation controller that lives on this tab). It shows a UIListView of items. 2. The user opts to create a new item, so we display a modal item-creation screen that subsequently brings up (and handles the dismissal of) the photo picker. While this is up, memory warnings often occur. 3. After the user completes the item-creation process, our modal item-creation controller calls its delegate (the original list screen) to say it's done. 4. The delegate creates an item-detail view for the new item, and pushes it onto the navigation stack (behind the modal view). It then dismisses the modal view, which should reveal the newly created detail screen. This works fine, unless a memory warning happened; in that case only a white screen is revealed and the app essentially hangs because the user can't interact with it. What we know from logging is that (in the memory-warning case) 1. The detail screen's view is loaded from the XIB, but its viewWillAppear method is never called. 2. The tab's root view (the list) is unloaded, and its viewWillAppear method is never called. But our modal view's viewWillDisappear method IS called. So no view is told that it's about to appear when the modal one disappears. _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
