如何在OSX上執行此iOS動畫？

Question

我在iOS的一個非常簡單的動畫淡入視圖，並調整其大小的容器，以適應另一種觀點，然後消失，其他視圖回。這是很容易做到，非常簡單。

我一直在努力做的事情OSX幾乎完全一樣，但我一直無法弄清楚如何做到這一點。與iOS相比，OSX上的動畫內容非常笨重和困難。

任何幫助將不勝感激！

謝謝！ :)

// Fade out viewOne, resize frame to fit viewTwo, fade in viewTwo 
[UIView animateWithDuration: 0.15 
     animations: ^{ 
      [viewOne setAlpha:0.0]; 
     } 
     completion: ^(BOOL finished) { 
      [UIView animateWithDuration: 0.2 
        animations: ^{ 
         [self setFrame: [viewTwo frame]]; 
        } 
        completion: ^(BOOL finished) { 
         [viewTwo setAlpha: 0.0]; 
         [self addSubview: viewTwo]; 
         [UIView animateWithDuration: 0.15 
           animations: ^{ 
            [viewTwo setAlpha:1.0]; 
           }]; 
        }]; 
     }]; 

Answer 1

我已經寫了一個小的類，使用塊來實現上述在OSX上使用動畫代理時基本上相同的事情。

請注意，這個類不是線程安全的，並沒有經過任何具體或壓力測試。

//Interface 
@interface MZAnimator : NSObject{} 

+ (void)animateWithDuration:(NSTimeInterval)duration 
        animation:(void (^)(void))animationBlock; 
+ (void)animateWithDuration:(NSTimeInterval)duration 
        animation:(void (^)(void))animationBlock 
       completion:(void (^)(void))completionBlock; 
@end 


//Implementation 
@interface MZAnimator() 
+ (void)runEndBlock:(void (^)(void))completionBlock; 
@end 

@implementation MZAnimator 

+ (void)animateWithDuration:(NSTimeInterval)duration 
        animation:(void (^)(void))animationBlock 
{ 
    [self animateWithDuration:duration animation:animationBlock completion:nil]; 
} 
+ (void)animateWithDuration:(NSTimeInterval)duration 
        animation:(void (^)(void))animationBlock 
       completion:(void (^)(void))completionBlock 
{ 
    [NSAnimationContext beginGrouping]; 
    [[NSAnimationContext currentContext] setDuration:duration]; 
    animationBlock(); 
    [NSAnimationContext endGrouping]; 

    if(completionBlock) 
    { 
    id completionBlockCopy = [[completionBlock copy] autorelease]; 
    [self performSelector:@selector(runEndBlock:) withObject:completionBlockCopy afterDelay:duration]; 
    } 
} 

+ (void)runEndBlock:(void (^)(void))completionBlock 
{ 
    completionBlock(); 
} 
@end 

Answer 2

您可以使用：

[NSAnimationContext runAnimationGroup:^(NSAnimationContext *context) { 
    [context setDuration:2.0]; 
    //Animation code 
    } completionHandler:^{ 
    //Completion Code 
    NSLog(@"Completed"); 
    }];