UIImageView改变背景颜色和setImage在动画期间不工作

Question

正如标题所说，这很奇怪，你同意吗?

所以，如果有人发现你的代码

imageView.backgroundColor = [UIColor greenColor]; 

或

imageView.image = [UIImage imageName:@"angryBird"];" 

不工作。只要记住，如果你的imageView是动画的，或者动画是否已经被删除。

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在设置图像和改变动画UIImageView的背景之前停止动画。

UIImageView* imageView = [UIImageView alloc] init];
//......do sth. like setFrame ...
imageView.images = [NSArray arrayWithObjects....]; // set the animation images array 
imageView.animationDuration = 1.0;
[imageView startAnimating];
//......do sth.
[imageView stopAnimating];        // **** do not forget this!!!!! ****
imageView.backgroundColor = [UIColor greenColor];
imageView.image = [UIImage imageName:@"angryBird"];

当你的performSelector: withthobject: afterDey:1.0s，在选择器方法，也，你需要stopAnimating太，然后setImage或改变背景颜色。

Answer 1

动画完成后尝试更改背景颜色和更改图像。

Answer 2

试试这个:

[UIView animateWithDuration:1.0 animations:^(){} completion:^(BOOL finished){}];

Answer 3

试试这个，动画使用块

[UIView animateWithDuration:1.0 animations:^{
    }
    completion:^(BOOL finished)
    {
        [imageView setImage:[UIImage imageNamed:@"YOUR_IMAGE_NAME"]];
        [imageView setBackgroundColor:[UIColor greenColor]];

    }];

注意:它是imageNamed:而不是imageName:，我不确定这是如何编译的

Answer 4

试试下面的代码和performSelector: withthobject:afterDelay::

    [self performSelector:@selector(animationDidFinish:) withObject:nil
         afterDelay:instructions.animationDuration];

或使用dispatch_after:

    dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, instructions.animationDuration * NSEC_PER_SEC);
    dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
         [self animationDidFinish];
    });

我希望它能帮助你