UISlider不在iOS7中动画 [英] UISlider not animating in iOS7

问题描述

当我从iOS 6切换到iOS 7设计时，我注意到使用方法 setValue：animated：不再动画滑动过程。有没有其他人遇到这个问题，并找到一个解决方案？

When I switched from iOS 6 to iOS 7 design, I noticed that using the method setValue:animated: no longer animates the sliding process. Has anyone else came across this problem and found a solution?

我只是添加一些代码来显示我没有做任何复杂的：

I'll just add some code to show I've done nothing complicated:

//Variable declaration
IBOutlet UISlider *s; //Connected in the .xib

//Button pressed
- (IBAction)buttonPressed:(id)sender
{
    [s setValue:1 animated:YES];
}

按下按钮后直接跳到1。

And it jumps straight to 1 after I press the button.

推荐答案

向后兼容iOS 4解决方案/解决方法：

Backwards compatible to iOS 4 solution/workaround:

[UIView animateWithDuration:1.0 animations:^{
    [_sliderTest setValue:0.90 animated:YES];
}];

看来iOS 7不会动画，除非你同时指定这个块和动画：YES。 iOS 6.0似乎忽略动画块并执行自己的内部块。金达奇。指定持续时间为2.0，以使iOS 7动画的速度比iOS 6的速度慢两倍，代码相同。

It seems that iOS 7 wont animate unless you specify both this block and animated:YES. iOS 6.0 seems to ignore the animation block and execute its own internal block. Kinda odd. Specify a duration of 2.0 to see iOS 7 animate twice as slow as iOS 6 with the same code.

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