dismissViewController clear the screen but doesn't dismiss - ios

Question

I have 2 screens:
The first call the second with the following code:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([segue.identifier isEqualToString:kDetailSegue]) {
[NSThread detachNewThreadSelector:#selector(loadingThread) toTarget:self withObject:nil];
TagDetailControllerViewController* detailController = segue.destinationViewController;
detailController.location = self.recentLocation;
}
}
The kDetailSegue is a present modally - presentation default - transition: default
In second ViewController, I'm trying to dismiss the screen:
[self.navigationController dismissViewControllerAnimated:YES completion:nil];

Answer 1

It is not clear what you want to dismiss in your second view controller, so I will try to present the most likely scenarios:
If you want to dismiss the view controller presented modally (TagDetailControllerViewController), you need to dismiss it modally too.
This can be achieved by calling in your TagDetailControllerViewController itself:
[self dismissViewControllerAnimated:YES completion:nil];
Which works because, according to Apple's documentation:
If you call this method on the presented view controller itself, it automatically forwards the message to the presenting view controller.
Also, if you want to dismiss it directly from the view controller you used to present it, you can do it as follows:
[self.presentedViewController dismissViewControllerAnimated:YES completion:nil];
Finally, if what you want is to dismiss a view that was pushed in your UINavigationController, then you can just pop it from the stack:
[self.navigationController popViewControllerAnimated:YES];
As you can see, the way a view is dismissed really depends on the way it was presented.

Answer 2

try this
[self.presentingViewController.presentingViewController dismissViewControllerAnimated:YES completion:NULL];