multitasking

I develop an application on iphone that uses MPMoviePlayerController to play audio file. When Application goes to background, if mpmovieplayer is playing, iphone continues to play the current music, but when it ends, the next track doesn't start. I try to start the next audio file in the MPMoviePlayerPlaybackDidFinishNotification and when I follow the code using the debugger I can see that the method is invoked and the code executed, bat the next audio file still doesn't start. Is this possible on iOS 4.1 or this is a limitation? Best regards Samantha You should read the Technical Q&A QA1668 :

I have an application wherein when the user taps iPhone's central button, the application is sent to background, but I want it to be closed. I can hand event and close it, but may be there is some configuration setting to deny running in the background? Thank you If you want your app to terminate when the user presses the home button, set the value of UIApplicationExitsOnSuspend to YES in your app's Info.plist file. If you do this, when the user taps the home button the applicationWillTerminate: method of your app delegate will be called and then your application will terminate. 来源： https:/

I'm trying to get my audio app to play in the background. So far I added "app plays audio" to the "required background modes" in info.plist and also the following code just before starting my sound generator: AudioSessionInitialize(NULL, kCFRunLoopDefaultMode, &interruptionListener, sgD); AudioSessionAddPropertyListener(kAudioSessionProperty_AudioRouteChange, &routeChangeListener, sgD); // select "Playback" audio session category NSError *setCategoryError = nil; [[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error: &setCategoryError]; OSStatus propertySetError = 0

I feel that UIApplicationBackgroundRefreshStatusDidChangeNotification introduced in iOS 7 is of little use without supporting UIApplication delegate method. Because, the app is not notified when user has switch ON the background refresh state for my app. This is my notification handler... - (void)applicationDidChangeBackgroundRefreshStatus:(NSNotification *)notification { NSLog(@"applicationDidChangeBackgroundRefreshStatus with notification info = %@ and refresh status = %d", notification, UIApplication.sharedApplication.backgroundRefreshStatus); if (UIApplication.sharedApplication

The problem is this - My app lets you passcode protect itself. I use an interface just like passcode protecting the phone. This has always worked fine, until multi-tasking came along. The passcode protection still works, but there is one issue. Apple does something special to make it look like our apps are loading quicker when they come back from the background. The os takes a picture of our screen just before the user leaves the app, and it displays that while the rest of the app is still loading. The problem this causes is that someone trying to go to my app would see that image of the