How do I prevent my GUI from redraw when it comes back from lock screen after receiving a UILocalNotification? In didReceiveLocalNotification I present a modal view, but the old state of my view controllers is shown for a moment before that. How do I prevent this?
Also the order of events I get when I come back on local notification from background is as following:
1. UIApplicationWillEnterForegroundNotification
2. UIApplicationDidBecomeActiveNotification
3. didReceiveLocalNotification
When I come from lock screen:
1. didReceiveLocalNotification
2. UIApplicationDidBecomeActiveNotification
Why is this difference and whether there is something else I'm missing?
Thanks
Here's how it was solved. May be it's not the way, but it worked for me. Since my application is voip/audio, it doesn't come to didFinishLaunchingWithOptions
... I found out, that iOS uses a cached image from a previous state for animation when it resumes from background or from sleep mode. So the solution is basically to exchange this cached image with my default.png image. I do it in applicationWillResignActive
delegate. There I add a modal view with a Default.png
picture and dismiss it in applicationDidBecomeActive
. This is really in short. Hopefully it will help somebody else with the same problem.