UINavigationController popViewControllerAnimated issue

Question

I have LoginViewControllerIphone instance , where I push the instance of TasksRootViewControllerIphone

then in TasksRootViewControllerIphone (10 seconds after appearing) I call [self.navigationController popViewControllerAnimated:YES];

And receive an error:

[NSRecursiveLock isSystemItem]: unrecognized selector sent to instance 0x3ba360

I tried to print navigation controller stack:

po [self.navigationController viewControllers]
$2 = 0x003445f0 <__NSArrayI 0x3445f0>(
<LoginViewControllerIphone: 0x3b73c0>,
<TasksRootViewControllerIphone: 0x3af290>
)

So it has proper view controllers. Any ideas how can it happen?

update:

pushing code:

           self.tasksRootViewControllerIphone = [[TasksRootViewControllerIphone alloc] initWithNibName:@"TasksRootViewControllerIphone" bundle:nil];
            self.tasksRootViewControllerIphone.view.backgroundColor = [UIColor clearColor];
            [self.loginViewControllerIphone.navigationController pushViewController:self.tasksRootViewControllerIphone animated:YES];

in TasksRootViewControllerIphone.m I have:

- (void)viewDidLoad
{
    [self performSelector:@selector(popCurrentViewControllerAnimated) withObject:self afterDelay:10];
}

- (void)popCurrentViewControllerAnimated
{
    [self.navigationController popViewControllerAnimated:YES];
}

check https://developer.apple.com/library/ios/documentation/cocoa/reference/foundation/Classes/NSRecursiveLock_Class/Reference/Reference.html — kirti Chavda, Sep 20 '13 at 05:59
can you post some code of pushing view controller my friend?? — NiravPatel, Sep 20 '13 at 06:04
post your TasksRootViewControllerIphone excutable methods while launching, Mostly this is happening in your ViewDidLoad method. — ajay, Sep 20 '13 at 06:20

Siddiq · Answer 1 · 2013-09-20T07:11:03.090

1

Update your viewDidload Method as

 - (void)viewDidLoad
{
    [self performSelector:@selector(popCurrentViewControllerAnimated) withObject:nil afterDelay:10];
}

hopefully it solve your problem.

As the method popCurrentViewControllerAnimated not take any argument. so withObject should be nil. not self.

edited Sep 20 '13 at 07:11

answered Sep 20 '13 at 06:45

Siddiq

393
2
8

what is new ? check question proper – kirti Chavda Sep 20 '13 at 06:49
@kirti As in question in viewDidLoad Method {[self performSelector:@selector(popCurrentViewControllerAnimated) withObject:self afterDelay:10];} which is wrong. – Siddiq Sep 20 '13 at 07:05
it's now wrong, because I have a separate method popCurrentViewControllerAnimated, and I use @selector(popCurrentViewControllerAnimated) – Paul T. Sep 20 '13 at 09:17

score 0 · Accepted Answer · answered Sep 24 '13 at 06:28

0

I found the point.

The problem was because it's not arc project, and one of the UIBarButtonItems was released one time more.

Strange, but it caused the problem with popViewController.

answered Sep 24 '13 at 06:28

Paul T.

4,938
7
45
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UINavigationController popViewControllerAnimated issue

2 Answers2