Flip transition in iPhone

Question

I am facing problems in flipping views in iPhone.

I have two views in appDelegate. I want to flip them once user clicks on a button.

I have the following code:

CATransition *transition = [CATransition animation];

transition.duration = 0.75;
[transition @"twist"];
[transition setSubtype:@"fromRight"];

transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
[transition setFillMode:@"extended"];

[[window layer] addAnimation:transition forKey:nil];


[window addSubview:self.s.view];
[CATransaction commit];

But this is not working. Do anybody knows a better way to flip the views on window side.

What I am doing is calling the method from appDelegate in the respective viewControllers to flip the views.

Answer 1

See The Elements sample code. Particularly AtomicElementViewController -flipCurrentView.

Answer 2

If you're using the 3.0 SDK and all you want is a simple flip transition (ala the Weather app) then you don't need to go down to CATransition. The higher-level UIView animation transitions will do what you want but with 3.0 there is an even easier way: simply present your new view as a modal view controller and set the modal transition style to flip. From within the first controller:

UIViewController *controllerForSecondView = ..;
controllerForSecondView.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:controllerForSecondView animated:YES];

Flip back again by using dismissModalViewController.

Documentation Reference

Answer 3

@Luke - thanks, this sample helped me...1 correction though (based on UIViewController.h)

UIViewController *controllerForSecondView = ..;
controllerForSecondView.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:controllerForSecondView animated:YES];

From the header file comments:

// Defines the transition style that will be used for this view controller when it is presented modally. Set this property on the view controller to be presented, not the presenter. // Defaults to UIModalTransitionStyleSlideVertical. @property(nonatomic,assign) UIModalTransitionStyle modalTransitionStyle