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Why viewWillDisappear or viewDidDisappear not called when app quit in iOS simulator?

Sunil Singh 2559 20 Apr 2015

I'm trying to call removeObserver() when the app quits. But when I used NSLog() to check, I found neither viewWillDisappear() nor viewDidDisappear() was called after the app quit in iOS simulator. I'm using a single view template, not navigation controller in similar questions.

Sunil Singh

Other

1 Answers

Jayden Bell 20 Apr 2015 Accepted Answer

These two methods will not be called when you quit the app. Instead, the method you can use observer

 [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(applicationDidEnterBackground:)name:UIApplicationDidEnterBackgroundNotification object:nil];

(void)applicationDidEnterBackground:(NSNotification *)aNotification {
 // your  removeObserver code goes here.
    NSLog(@"applicationDidEnterBackground");

}

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