我如何在OSX上做这个iOS动画？

Question

我在iOS中有一个非常简单的动画,它会淡化视图,调整容器大小以适应另一个视图,然后淡化其他视图.这很容易做到且非常简单.

我一直在尝试在OSX上做一些非常类似的事情,但我还没弄清楚如何做到这一点.与iOS相比,OSX上的动画内容感觉非常笨重和困难.

任何帮助将非常感激!!

谢谢!:)

// 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

我写了一个小类,在OSX上使用动画代理时,使用块来完成与上面基本相同的操作.

请注意,此类不是线程安全的,并且未经历任何特定或压力测试.

//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");
  }];