iOS - How to check if a modal view is present

Question

Is there a way to check if a modal view is present? I'd like to run a method only if a modal view is present. Also, if I have multiple modal views, is there a way to check if a certain modal view is present.

I use the following code to present and dismiss modal views:

    [self presentModalViewController:myModalView animated:YES];
    [self dismissModalViewControllerAnimated:YES];

Thank you in advance!

Cheers, Evan

PS. My modal view has a view controller, but I'd like to check if the modal view is present from a separate class that is running asynchronously.

Please consider changing the correct answer for this question. — Daniel, Feb 24 '12 at 15:31

score 76 · Accepted Answer · answered Jul 15 '11 at 00:48

76

Are you checking the presence of a modal view controller from the parent view controller? If so, you can just check that view controller's modalViewController property:

BOOL modalPresent = (self.modalViewController);

If you want to check for a particular modal view controller, you can get the modal view controller's class name like this:

NSString *modalClassName = NSStringFromClass([self.modalViewController class]);

answered Jul 15 '11 at 00:48

arlomedia

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self.modalViewController is now deprecated, you should now use BOOL modalPresent = (BOOL)(self.presentedViewController); – allaire Apr 26 '12 at 19:33
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To piggyback on @allaire's comment, here's the documentation on presentedViewController (http://developer.apple.com/library/ios/#documentation/UIKit/Reference/UIViewController_Class/Reference/Reference.html#//apple_ref/occ/instp/UIViewController/presentedViewController) that seems to suggest a modal view controller exists only if it is being presented by "this" view. – Danny May 29 '13 at 23:46

score 64 · Answer 2 · answered Aug 10 '12 at 07:53

64

You can check using: self.presentedViewController, which returns The view controller that is presented by this view controller, or one of its ancestors in the view controller hierarchy.

answered Aug 10 '12 at 07:53

tipycalFlow

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this should be the checked answer. `modalViewController` is deprecated – nburk Dec 02 '14 at 09:40
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Use `presentedViewController` now. – Wyetro Feb 09 '16 at 07:54

score 6 · Answer 3 · answered Sep 15 '14 at 07:22

What worked for me is following:

// this is the trick: set parent view controller as application's window root view controller
UIApplication.sharedApplication.delegate.window.rootViewController = viewController;

// assert no modal view is presented
XCTAssertNil(viewController.presentedViewController);

// simulate button tap which shows modal view controller
[viewController.deleteButton sendActionsForControlEvents:UIControlEventTouchUpInside];

// assert that modal view controller is presented
XCTAssertEqualObjects(viewController.presentedViewController.class, MyModalViewController.class);

As far as I tested it, this works for iOS7 and iOS8. Didn't try on iOS6 however.

Don't forget to add the UINavigationController as the window's rootViewController if your UIViewController is embedded in one. Then just call presentedViewController on that navController. :) — Joe Susnick, May 18 '17 at 17:28

score 1 · Answer 4 · edited Jul 21 '16 at 19:51

1

You can check the presence of a modal view controller from the parent view controller

if ( [[self presentingViewController] presentingViewController] ) {

}

edited Jul 21 '16 at 19:51

jose920405

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answered Apr 22 '16 at 10:50

Binoy jose

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iOS - How to check if a modal view is present

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