viewDidDisappear not called when use presentViewController

ios xcode uiviewcontroller viewwillappear
Kyle_at_QP picture Kyle_at_QP · Mar 8, 2012 · Viewed 12k times · Source

I have an UIViewController having this method: 

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    NSLog(@"DISAPPEAR");
    lastKnownOrientation = [self interfaceOrientation];
}


-(void)openSendVC{
    SendMsgViewController *vc = [[SendMsgViewController alloc]initWithNibName:@"SendMsgViewController" bundle:nil];
    [self.navigationController pushViewController:vc animated:NO];  
}

In the second view controller (SendMsgViewController) viewDidLoad I have the following:

[self presentViewController:picker animated:YES completion:NULL];

where picker is an UIImageViewPicker.

The problem is, when I call the method openSendVC a new controller is opened, but viewWillDisappear (of the first viewController) is not called.

Answer

yuji picture yuji · Mar 8, 2012

That is the correct behavior. Here's an excerpt about viewWillDisappear: from the UIViewController API docs:

This method is called in response to a view being removed from a view hierarchy. This method is called before the view is actually removed and before any animations are configured.

Presenting a new view controller so that it hides the other view controller doesn't count as the view disappearing—only actually being removed from a view hierarchy does (e.g., with something like popViewControllerAnimated:).

Related questions

Move UIView up when the keyboard appears in iOS

I have a UIView, it is not inside UIScrollView. I would like to move up my View when the keyboard appears. Before I tried to use this solution: How can I make a UITextField move up when the keyboard is …

Read More
How do I create a custom iOS view class and instantiate multiple copies of it (in IB)?

I am currently making an app that will have multiple timers, which are basically all the same. I want to create a custom class that uses all of the code for the timers as well as the layout/animations, so …

Read More
Explaining difference between automaticallyAdjustsScrollViewInsets, extendedLayoutIncludesOpaqueBars, edgesForExtendedLayout in iOS7

I have been reading a lot about iOS7 UI transition. I am not able to get what these three properties automaticallyAdjustsScrollViewInsets, extendedLayoutIncludesOpaqueBars, edgesForExtendedLayout?? For example I am trying to make my view controllers start below the status bar but I …

Read More