多CAAnimations为animationDidStop方法？ [英] Multiple CAAnimations for animationDidStop method?

问题描述

我知道你有使用这种方法来获取时的动画效果已完成的委托方法：

I know you have to use this method to get the delegate method for when the animation has finished:

- (void)animationDidStop:(CAAnimation *)theAnimation finished:(BOOL)flag {

问题是，我怎么会多CAAnimations区分像2个或更多？

The problem is, how would I distinguish between multiple CAAnimations like 2 or more?

我GOOGLE了这一点，我还没有发现任何有用的东西。

I googled this and I haven't found anything useful.

请您如何做到了这一点与我分享！

Please share with me on how you accomplished this!

谢谢！

推荐答案

您可以像这样CAAnimation实例设置键/值对象：

You can set key/value objects for CAAnimation instance like this:

CABasicAnimation *theAnimation = [CABasicAnimation animationWithKeyPath:@"opacity"];
[theAnimation setValue:@"animation1" forKey:@"id"]; 
theAnimation.delegate = self;

CABasicAnimation *theAnimation2 = [CABasicAnimation animationWithKeyPath:@"opacity"];
[theAnimation2 setValue:@"animation2" forKey:@"id"];    
theAnimation2.delegate = self;

检查哪一个被称为委托方法：

Check which one was called in delegate method:

- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag{
    if([[anim valueForKey:@"id"] isEqual:@"animation1"]) {
        NSLog(@"animation1");
    }
    if([[anim valueForKey:@"id"] isEqual:@"animation2"]) {
        NSLog(@"animation2");
    }
}

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