Question

The thing is: I have a modalViewController presented with a button that triggers an IBAction like this:

-(IBAction)myMethod
{
    [self dismissModalViewControllerAnimated:YES];

    if([delegate respondsToSelector:@selector(presentOtherModalView)])
    {
        [delegate presentOtherModalView];
    } 
}

in the root view that is the delegate for that modalViewControllerI’ve implemented the presentOtherModalView delegate method and it looks like this:

    -(void)presentOtherModalView
{

     AnotherViewController *viewInstance = [[AnotherViewController alloc]initWithNibName:@"AnotherViewController" bundle:nil];

     viewInstance.modalTransitionStyle = UIModalTransitionStyleCoverVertical;

     [self presentModalViewController:viewInstance animated:YES];

    [viewInstance release];
}

The problem is this second modalViewController is not being presented. It gives me the message wait_fences: failed to receive reply: 10004003… How should this be done?

Answer 1

Because they are executed exactly after each other (they don’t wait for the view to disappear/appear), it doesn’t get executed. Because there can only be one ModalViewController on the screen at a time, you have to first wait for the other ModalViewController to disappear before the next one is put on screen.

You can do this creatively how you want, but the way I did it was something like:

[self dismissModalViewControllerAnimated:YES];
self.isModalViewControllerNeeded = YES;

And then in the underlying ViewController, in the viewDidAppear method, I do this:

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    if (self.isModalViewControllerNeeded) {
        [self presentModalViewController:viewInstance animated:YES];
        self.isModalViewControllerNeeded = NO;
    }
}

Hope it helps!