How to flip an individual UIView (without flipping the parent view)

Question

This is an iPad project where I have a UIView with several subViews, and I am trying to animate one of this UIViews using [UIView transitionFromView:toView:duration:options:completion], but when I run this method the whole parent view gets flipped! This is the code I'm using:

UIView *secondView = [[UIView alloc] initWithFrame:CGRectMake(200, 200, 300, 300)]; [newView setBackgroundColor:[UIColor redColor]];     [UIView transitionFromView:self.firstView.view toView:secondView duration:1.0 options:UIViewAnimationOptionTransitionFlipFromLeft completion:nil]; 

Any idea on how can I flip between this views without animating the whole parent view? Thanks!

Answer 1

this code may helps you:

put the two views you want to flip inside an unnamed view with the same size and link the IBOutlet UIView *newView,*oldView; to the views and put the new view on top

bool a = NO;  @implementation ViewController  - (IBAction)flip:(id)sender  {     if (a == NO) {         [UIView transitionFromView:oldView toView:newView                     duration:1.0                    options:UIViewAnimationOptionTransitionFlipFromLeft                    completion:NULL];         a = YES; // a = !a;     }     else {         [UIView transitionFromView:newView toView:oldView                     duration:1.0                    options:UIViewAnimationOptionTransitionFlipFromLeft                    completion:NULL];         a = NO; // a = !a;     } } 

Answer 2

I had problems getting this to work also. I used the code written by Floris, but although it worked for the first "flip" the next flip started to go weird where the buttons and labels on the frontside UI View lost there positions.

I put the code below into place and it is working fine.

Couple of things to note:

1. panelView is a UIView control on the ViewController that has two other UIViews nested inside it (subviews). The first one is called frontView, second one is called backView. (see picture below)

2. I have a bool property called displayingFront on the class

(in my .h)

@property BOOL displayingFront; 

in my .m

@synthesize displayingFront; 

in my viewDidLoad method

self.displayingFront = YES; 

This is the code in the .m that i have rigged up to the two buttons if front and back UIViews...

- (IBAction)flip:(id)sender {     [UIView transitionWithView:self.panelView                       duration:1.0                        options:(displayingFront ? UIViewAnimationOptionTransitionFlipFromRight :                                 UIViewAnimationOptionTransitionFlipFromLeft)                     animations: ^{                         if(displayingFront)                         {                             self.frontView.hidden = true;                             self.backView.hidden = false;                         }                         else                         {                             self.frontView.hidden = false;                             self.backView.hidden = true;                         }                     }                      completion:^(BOOL finished) {                         if (finished) {                             displayingFront = !displayingFront;                         }                     }]; }