ios 在 UIScrollView 中禁用垂直滚动
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Disabling vertical scrolling in UIScrollView
提问by system
There is an option in IB to uncheck vertical scrolling on a scrollview, but it doesnt seem to work.
IB 中有一个选项可以取消选中滚动视图上的垂直滚动，但它似乎不起作用。
How can the scrollview be set to only scroll horizontally, and not vertically in the code rather than IB?
如何在代码中将滚动视图设置为仅水平滚动，而不是垂直滚动而不是 IB？
回答by Mirko Brunner
since iOS7:
从 iOS7 开始：
first: the content size width must be equal to the width of your scrollview
第一：内容大小宽度必须等于滚动视图的宽度
second: in your initWithNibName:
第二：在你的 initWithNibName 中：
self.automaticallyAdjustsScrollViewInsets = NO;
That′s it.
就是这样。
回答by pt2ph8
Try setting the contentSize's height to the scrollView's height. Then the vertical scroll should be disabled because there would be nothing to scroll vertically.
尝试将 contentSize 的高度设置为 scrollView 的高度。然后应该禁用垂直滚动，因为垂直滚动没有任何内容。
scrollView.contentSize = CGSizeMake(scrollView.contentSize.width,scrollView.frame.size.height);
回答by meronix
yes, pt2ph8's answer is right,
是的，pt2ph8的答案是对的，
but if for some strange reason your contentSize should be higher than the UIScrollView, you can disable the vertical scrolling implementing the UIScrollView protocol method
但是如果由于某种奇怪的原因你的 contentSize 应该高于 UIScrollView，你可以禁用实现 UIScrollView 协议方法的垂直滚动
-(void)scrollViewDidScroll:(UIScrollView *)aScrollView;
just add this in your UIViewController
只需在您的 UIViewController 中添加它
float oldY; // here or better in .h interface
- (void)scrollViewDidScroll:(UIScrollView *)aScrollView
{
[aScrollView setContentOffset: CGPointMake(aScrollView.contentOffset.x, oldY)];
// or if you are sure you wanna it always on top:
// [aScrollView setContentOffset: CGPointMake(aScrollView.contentOffset.x, 0)];
}
it's just the method called when the user scroll your UIScrollView, and doing so you force the content of it to have always the same .y
它只是用户滚动 UIScrollView 时调用的方法，这样做会强制它的内容始终具有相同的 .y
回答by Febin P
Include the following method
包括以下方法
-(void)viewDidLayoutSubviews{
self.automaticallyAdjustsScrollViewInsets = NO;
}
and set the content size width of the scroll view equal to the width of the scroll view.
并将滚动视图的内容大小宽度设置为等于滚动视图的宽度。
回答by Mani
You need to pass 0 in content size to disable in which direction you want.
您需要在内容大小中传递 0 以禁用您想要的方向。
To disable vertical scrolling
禁用垂直滚动
scrollView.contentSize = CGSizeMake(scrollView.contentSize.width,0);
To disable horizontal scrolling
禁用水平滚动
scrollView.contentSize = CGSizeMake(0,scrollView.contentSize.height);
回答by bolonn
I updated the content size to disable vertical scrolling, and the ability to scroll still remained. Then I figured out that I needed to disable vertical bounce too, to disable completly the scroll.
我更新了内容大小以禁用垂直滚动，并且滚动的能力仍然存在。然后我发现我也需要禁用垂直反弹，以完全禁用滚动。
Maybe there are people with this problem too.
也许也有人有这个问题。
回答by bolonn
- (void)scrollViewDidScroll:(UIScrollView *)aScrollView
{
[aScrollView setContentOffset: CGPointMake(aScrollView.contentOffset.x,0)];
}
you must have confirmed to UIScrollViewDelegate
你必须确认 UIScrollViewDelegate
aScrollView.delegate = self;
回答by Michael
On iOS 11 please remember to add the following, if you're interested in creating a scrollview that sticks to the screen bounds rather than a safe area.:
在 iOS 11 上，如果您有兴趣创建一个粘在屏幕边界而不是安全区域的滚动视图，请记住添加以下内容。：
if (@available(iOS 11.0, *)) {
[self.scrollView setContentInsetAdjustmentBehavior:UIScrollViewContentInsetAdjustmentNever];
}
回答by manuelsantos
Just set the y to be always on top. Need to conform with UIScrollViewDelegate
只需将 y 设置为始终在顶部。需要符合 UIScrollViewDelegate
func scrollViewDidScroll(scrollView: UIScrollView) {
scrollView.contentOffset.y = 0.0
}
This will keep the Deceleration / Acceleration effect of the scrolling.
这将保持滚动的减速/加速效果。
回答by malex
From iOS11one can use the following property
从iOS11可以使用以下属性
let frameLayoutGuide: UILayoutGuide
If you set constraints for frameLayoutGuide.topAnchorand frameLayoutGuide.bottomAnchorto the same anchors of some subviewof your scrollViewthen vertical scroll will be disabled and the height of the scrollViewwill be equal to the height of its subview.
如果您设置的限制frameLayoutGuide.topAnchor和frameLayoutGuide.bottomAnchor到一些相同的锚子视图您的滚动视图，然后垂直滚动将被禁用和高度滚动视图将等于其子视图的高度。
