ios - 每个循环后都有延迟的按钮图像阵列动画

Question

我正在制作一个简单的动画，我有 10 个按钮和一个按钮的“点击”(例如 5)所有按钮应该开始一个接一个地制作动画，但它们同时制作动画，请告诉我什么可以完成或.....谢谢

    NSMutableArray* imagesArray = [[NSMutableArray alloc] init];
for (int images = 0; images < 15; images++) {

    UIImage* buttonImage = [UIImage imageNamed:[NSString stringWithFormat:@"aaqqq00%02d.png", images]];
    [imagesArray addObject:buttonImage];
}

NSArray* reversedAnim = [[imagesArray reverseObjectEnumerator] allObjects];

int buttonTag = button.tag;

for (int images = 1; images <= 10; images++) {
    UIButton *animButton = (UIButton *)[self.view viewWithTag:images];
    if (images <= buttonTag) {
        animButton.imageView.animationImages = imagesArray;
        [animButton setImage:
         [UIImage imageNamed:@"aaqqq0014.png"] forState:UIControlStateNormal];
        animButton.adjustsImageWhenHighlighted = NO;
        animButton.imageView.animationDuration = 1; //whatever you want (in seconds)
        animButton.imageView.animationRepeatCount = 1;
        [animButton.imageView startAnimating];
    } else {

        if (currentButtonTag_ >= images) {
            animButton.imageView.animationImages = reversedAnim;
            [animButton setImage:
             [UIImage imageNamed:@"aaqqq0000.png"] forState:UIControlStateNormal];
            animButton.adjustsImageWhenHighlighted = NO;
            animButton.imageView.animationDuration = 0.2; //whatever you want (in seconds)
            animButton.imageView.animationRepeatCount = 1;
            [animButton.imageView startAnimating];
        }
    }
}

Answer 1

当你遍历你的循环时，有一个变量来保存所需的延迟，并在每个循环结束时添加到它。我们称此为延迟。

现在，而不是调用:

[animButton.imageView startAnimating];

这样做:

[animButton.imageView performSelector:@selector(startAnimating) withObject:nil afterDelay:delay];

每个按钮都会在累积延迟后开始动画。