Xcode learning-view conversion example (1)

XcodeLearningViewThe conversion example is described in this article.XcodeMediumViewTutorial on conversion example practice. Let's learn moreXcodeFor more information, see this article.

Flip (similar to flip)ViewEffect: Two implementation methods

SlideViewEffect

Focus on their respective implementations:

Example of flipped view Effect

On the official website

 
 

  
  
UIViewAnimationTransitionFlipFromLeft and UIViewAnimationTransitionFlipFromRight
 
 

To flip the view left or right.

To use conversion in a UIView animation block, two tasks are required:

1. You must add the conversion as a block parameter.

2. View order should be rescheduled within the block.

The effect code is as follows:

 
 

  
  
- (void) touchesEnded:(NSSet*)touches withEvent:(UIEvent*)event{      
  
  
// Start Animation Block     
  
  
 CGContextRef context = UIGraphicsGetCurrentContext();      
  
  
 [UIView beginAnimations:nil context:context];      
  
  
 [UIView setAnimationTransition: UIViewAnimationTransitionFlipFromLeft forView:[self superview] cache:YES];  
  
  
 //＊    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];      
  
  
 [UIView setAnimationDuration:1.0];         
  
  
 // Animations    [[self superview] exchangeSubviewAtIndex:0 withSubviewAtIndex:1];  
  
  
 //＊         
  
  
 // Commit Animation Block      
  
  
 [UIView commitAnimations];  
  
  
 } 
 
 

Note that this code is written on the touchesEnded event, which also conforms to the flip logic.

The above Code contains // *, that is, two jobs are required.

The first part indicates turning to the left. The flipped object is the upper-level view of the current view and is cached.

The second part indicates the exchange between 0 and 1 in the subview Gallery.

UIView class

Class Method: animation part)

 
 

  
  
setAnimationTransition:forView:cache:  
  
  
+ (void)setAnimationTransition:(UIViewAnimationTransition)transition forView:(UIView *)view cache:(BOOL)cache  
  
  
 
  
  
Sets a transition to apply to a view during an animation block. 
 
 

Method:

 
 

  
  
exchangeSubviewAtIndex:withSubviewAtIndex:  
  
  
    - (void)exchangeSubviewAtIndex:(NSInteger)index1 withSubviewAtIndex:(NSInteger)index2  
  
  
 
  
  
    Exchanges the subviews at the specified indices.  
  
  
    index1: The index of the first subview in the receiver.  
  
  
    index2: The index of the second subview in the receiver. 
 
 

You can use other methods to implement the exchangeSubviewAtIndex: withSubviewAtIndex: method. For example:

 
 

  
  
UIViewController Controller  
  
  
    UIView v1  
  
  
    UIView v2  
  
  
Controller.view = v1;//v1 front  
  
  
Controller.view = v2;//v2 front 
 
 

Of course, this is only used in practice, but not necessarily. Not implemented with UIViewControllerAnimationResults: At least now I don't know whether UIViewController can be implemented.AnimationEffect.

Another method for implementationAnimationEffect Core Animation Transition: Act on the layer ratherViewSee the following code:

 
 

  
  
- (void) touchesEnded:(NSSet*)touches withEvent:(UIEvent*)event{      
  
  
CATransition *animation = [CATransition animation];      
  
  
[animation setDelegate:self];      
  
  
[animation setDuration:1.0f];      
  
  
[animation setTimingFunction:UIViewAnimationCurveEaseInOut];     
  
  
[animation setType: kCATransitionPush];      
  
  
[animation setSubtype: kCATransitionFromLeft];         
  
  
[[self superview] exchangeSubviewAtIndex:0 withSubviewAtIndex:1];      
  
  
[[[self superview] layer] addAnimation:animation forKey:@"transitionViewAnimation"];    
  
  
 }