iOS scrollView setContentOffset 同步问题 [英] iOS scrollView setContentOffset synchronization issue

问题描述

我用一个子视图初始化了一个 UIScrollView.按钮操作后，我想:

I initialize a UIScrollView with a subview. After a button action I want to:

• 添加新的子视图
• 滚动到带有动画的新子视图
• 在动画完成后删除旧的子视图.

为此，我执行以下操作:

for that i do the following:

[mCubeView setContentOffset:tOffset animated:YES];    
[tActualSide removeFromSuperview];

问题在于，在动画开始后，tActualSide"会立即被移除，并且也会从动画中移除.

The problem is that right after the animation begins the "tActualSide" gets removed instantly and it will be removed from the animation as well.

我想同步它，tActualSide 只会在动画结束时被移除.

I would like to synchronize it that the tActualSide is only going to be removed when the animation ends.

我该怎么做?

推荐答案

[UIView beginAnimations:nil context:NULL];
[UIView setAnimationBeginsFromCurrentState:YES];
[UIView setAnimationDuration:0.5];
[UIView setAnimationCurve: UIViewAnimationCurveLinear];
[mCubeView setContentOffset:tOffset];
[UIView commitAnimations];
[self performSelector:@selector(remove) withObject:nil afterDelay:0.5f];


- (void)remove
{
    [tActualSide removeFromSuperview];
}

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