UIScrollView在iPhone / iPad上旋转时禁用滚动

问题描述

我使用UIScrollView和其中的图像作为每页调页一个图像。旋转时出现问题

I am using UIScrollView and an image in it as paging one image per page. I have a problem while rotating the iPhone

旋转时iPhone然后scrollViewDidScroll（Scroll view delegate方法）正在调用。

When I rotate the iPhone then scrollViewDidScroll (Scroll view delegate method) is calling.Due to this, my paging is disturbed and the page number changes.

这是什么解决方案？

推荐答案

是一个很好的描述的问题，和一个整洁的修复。我有完全相同的问题，并以一个 scrollingLocked 标志，我在旋转开始前设置为YES（锁定），结束时NO（解锁）。也许比暂时改变contentSize稍微少一点hacky：

Raphaël's answer is an excellent description of the problem, and a neat fix. I had the exact same problem and ended up fixing with a scrollingLocked flag that I set to YES (locked) before the rotation starts, and NO (unlocked) when it ends. Perhaps slightly less hacky than temporarily changing the contentSize:

- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)orientation
                                duration:(NSTimeInterval)duration
{
    self.photoViewer.scrollingLocked = YES;
}

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromOrientation
{
    self.photoViewer.scrollingLocked = NO;
}

- (void)scrollViewDidScroll:(UIScrollView*)scrollView
{
    if (self.scrollingLocked)
    {
        return;
    }
    /* do normal scrollViewDidScroll: stuff */
}

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