Question

After adding a top navigation bar for customization of the camera overlay at here. Now I am trying to go back to the previous screen by adding an action to the back button. What I am doing is

-(IBAction)backButton:(id)sender {

NSLog(@"back button is clicked");

[self dismissModalViewControllerAnimated:YES]; 

}

However, the transition is no executed even though the console shows

back button is clicked

I also try

[self popToRootViewControllerAnimated:YES]

However,it does not work either
Have you encountered this issue before, please advice me about it. Thanks

PS : I dont wanna use the cancel button built-in controls (when showsZBarControls=YES )

Answer 1

I assume the controller you are sending this message to is a modal view controller. You have to send

dismissModalViewControllerAnimated:

to the actual modal view controller. So it will look like this

[self.someModalViewController dismissModalViewControllerAnimated:YES];

Or you could add this code to your modal view controller

-(IBAction)backButton:(id)sender {

  NSLog(@"back button is clicked");

 [self dismissModalViewControllerAnimated:YES]; 
}

This code implies that you have knowledge of your modal view controller in the previous view. You might look into adding these view controllers into a UINavigationController so all this would be taken care of.