尝试一次执行多个动画 [英] Trying to perform multiple animations at once

问题描述

我在网上找不到任何答案似乎很奇怪，但似乎如果你想以不同的速度同时移动 6 个 UIViews ，你做不到

Seems strange that i could not find any answer for this all over the net, but seems that if you want to move 6 UIViews at the same time in a different speed ,you can't do that.

如果我使用这两个示例中的一个，我会发现有时只有一些视图在移动，有时所有视图都在移动(如预期).

If i am using one of this 2 example, i get that sometimes only some of the views are moving, and sometimes all of them (as expected) .

有没有办法同时移动6-7-8个UIViews，不同的持续时间?

There is no way to move 6-7-8 UIViews at the same time ,with different duration?

1.

for(UIButton *button in buttons)
{

    float r=   arc4random()%10;
    float t =0.1+ 1.0/r;
[UIView beginAnimations:@"Anim0" context:nil];
[UIView setAnimationDuration:t];
[UIView setAnimationCurve:UIViewAnimationCurveEaseIn];
[UIView setAnimationTransition:UIViewAnimationTransitionNone forView:button cache:YES];

CGRect newframe=button.frame;
newframe.origin.y=0;
button.frame=newframe;

[UIView commitAnimations];

}

2.

 for(UIButton *button in buttons)
    {
         int random=arc4random()%10;
        float time=0.5+ 1/(float)random;
        CGRect newframe=button.frame;
        newframe.origin.y=0;
        [UIView transitionWithView:button
                          duration:time
                           options:UIViewAnimationOptionCurveEaseInOut
                        animations:^{
                           button.frame=newframe;
                        }
                        completion:nil];
    }

推荐答案

你需要限制随机数生成器.

You need to limit the random number generator.

你的功能...

arc4random() % 10;

有时会返回 0.

然后将其传递给...

float time = 0.5 + 1/random;

将使 time = inf.

您可以通过注销时间值来查看这一点.

You can see this by logging out the time values.

一段时间的 inf 会使按钮没有动画.

A time of inf will make the button not animate.

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