Re: viewWillDisappear not being called
Re: viewWillDisappear not being called
- Subject: Re: viewWillDisappear not being called
- From: Heath Borders <email@hidden>
- Date: Tue, 26 Apr 2011 00:29:32 -0500
> It sure would have been helpful if viewWillDisappear was sent as
> documented. When the home button is pressed, and the home screen is
> presented, the view has clearly disappeared (no offense Alex).
I was seeing this when switching tabs, not when the home button was pressed.
-Heath Borders
email@hidden
Twitter: heathborders
http://heath-tech.blogspot.com
On Tue, Apr 26, 2011 at 12:19 AM, Jeffrey Walton <email@hidden> wrote:
> On Mon, Apr 25, 2011 at 11:04 PM, Heath Borders <email@hidden> wrote:
>> I've seen this behavior also, specifically on iOS 3.1 while using a
>> UIViewController inside a UINavigationController inside a
>> UITabBarController.
> YES - that is nearly my setup (iOS 4.3.2). I don't have the
> intermediate UINavigationController, but the view has an
> UINavigationBar.
>
> Any ideas on how to locate an arbitrary view controller? The following
> only locates the 5 associated with the Tab Bar, and not the top most
> PasswordPromptController (which was presented modally).
>
> It sure would have been helpful if viewWillDisappear was sent as
> documented. When the home button is pressed, and the home screen is
> presented, the view has clearly disappeared (no offense Alex).
>
> Jeff
>
> - (void)applicationWillResignActive:(UIApplication *)application
> {
> if(tabBarController.viewControllers != nil)
> [self clearPasswords:tabBarController.viewControllers];
> }
>
> - (void)clearPasswords:(NSArray *)viewsControllers
> {
> Class passwordPromptClass = [PasswordPromptController class];
>
> for (UIViewController * viewController in viewsControllers)
> {
> if ([viewController isKindOfClass:passwordPromptClass])
> [(PasswordPromptController *)viewController clearPassworAndPin];
> }
> }
>
>>
>> On Mon, Apr 25, 2011 at 9:59 PM, Jeffrey Walton <email@hidden> wrote:
>>> Hi All,
>>>
>>> According to the documentation in the headers:
>>>
>>> // UIViewController.h
>>> // Called when the view is dismissed, covered or otherwise hidden.
>>> - (void)viewWillDisappear:(BOOL)animated;
>>>
>>> And Apple's documentation [1]:
>>>
>>> Notifies the view controller that its view is about to be dismissed,
>>> covered, or otherwise hidden from view.
>>>
>>> I'm not sure if I should be surprised or not, but viewWillDisappear
>>> does not appear to be called despite what the documentation claims.
>>>
>>> The view is part of a custom view controller (built with IB - nothing
>>> fancy) and presented modally. To duplicate, show a view modally and
>>> press the home button.
>>>
>>> Thanks in advance,
>>> Jeff
>>>
>>> [1] http://developer.apple.com/library/ios/#documentation/uikit/reference/UIViewController_Class/Reference/Reference.html
>>> [SNIP]
>
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