Question

I want to include Flip view in my project. I made it like this but cant work properly
and secondary view contains an image veiw

UIBarButtonItem *flipButton = [[UIBarButtonItem alloc] 
                               initWithTitle:@"Flip"                                            
                               style:UIBarButtonItemStyleBordered 
                               target:self 
                               action:@selector(flipView)];

self.navigationItem.leftBarButtonItem = flipButton;
UIBarButtonItem *returnButton = [[UIBarButtonItem alloc] 
                               initWithTitle:@"return"                                            
                               style:UIBarButtonItemStyleBordered 
                               target:self 
                               action:@selector(returnView)];

self.navigationItem.leftBarButtonItem = returnButton;

and i set the action like this

- (void)flipView{
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:1.0];
    [UIView setAnimationTransition:UIViewAnimationOptionTransitionFlipFromTop
                           forView:[self view]
                             cache:YES];
    [self.view addSubview:secondaryView];
    [UIView commitAnimations];
}


- (void)returnView {
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:1.0];
    [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft
                           forView:[self view]
                             cache:YES];
    [secondaryView removeFromSuperview];
    [UIView commitAnimations];
}

Answer 1

surely as you’re putting the code, nothing happens because you’re not giving the opportunity to do the flip.

try to MOVE these lines:

UIBarButtonItem *returnButton = [[UIBarButtonItem alloc] 
                               initWithTitle:@"return"                                            
                               style:UIBarButtonItemStyleBordered 
                               target:self 
                               action:@selector(returnView)];

self.navigationItem.leftBarButtonItem = returnButton;

inside of flipView, after or before the animation. And copy these other lines:

UIBarButtonItem *flipButton = [[UIBarButtonItem alloc] 
                               initWithTitle:@"Flip"                                            
                               style:UIBarButtonItemStyleBordered 
                               target:self 
                               action:@selector(flipView)];

self.navigationItem.leftBarButtonItem = flipButton;

inside of returnView. You’ll see the change.

I hope to be helpful!