blocks|key|301530|text|最干净的方法是继承UIScrollView并提供您自己的setContentOffset方法。只有当您没有打开您的freeze布尔属性时，这才应该传递消息。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|301531|如下所示：|301532|BOOL+freeze;+//+and+the+@property,+@synthesize+lines..

-(void)setContentOffset:(CGPoint)offset
{
++++if+(+!freeze+)+[super+setContentOffset:offset];
}|code-block|syntax|javascript|301533|然后，冻结：|301534|scrollView.freeze+=+YES;|301535|entityMap^0|1L|6|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|W|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|X|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|Y|8|@]|D|@]|E|$K|L]]|$1|Q|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|R|$]]

The cleanest way will be subclassing UIScrollView and providing your own setContentOffset method. This should pass the message on, only if you haven't switched on your <code>freeze</code> boolean property.

Like so:

<pre><code>BOOL freeze; // and the @property, @synthesize lines..

-(void)setContentOffset:(CGPoint)offset
{
 if ( !freeze ) [super setContentOffset:offset];
}
</code></pre>

Then, to freeze:

<pre><code>scrollView.freeze = YES;
</code></pre>

blocks|key|303585|text|我尝试了一下您的原始解决方案，这似乎工作得很好。我想你几乎就做到了，但是你只是抵消了你用得太多的rect，忘记了你可以直接把rect滚动回到原来的rect。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|303586|任何滚动操作的通用解决方案如下所示：|303587|-+(void)killScroll+
{
++++CGPoint+offset+=+scrollView.contentOffset;
++++offset.x+-=+1.0;
++++offset.y+-=+1.0;
++++[scrollView+setContentOffset:offset+animated:NO];
++++offset.x+%2B=+1.0;
++++offset.y+%2B=+1.0;
++++[scrollView+setContentOffset:offset+animated:NO];
}|code-block|syntax|javascript|303588|从iOS+4.3+(或更早版本)开始编辑此功能也可以|303589|-+(void)killScroll+
{
++++CGPoint+offset+=+scrollView.contentOffset;
++++[scrollView+setContentOffset:offset+animated:NO];
}|303590|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

I played with your original solution a bit, and this seems to work just fine. I think you almost had it, but you were just offsetting the rect that you used too much, and forgot that you could just scroll the rect straight back to the original rect.

The generalized solution for any scrolling action is this:

<pre><code>- (void)killScroll 
{
 CGPoint offset = scrollView.contentOffset;
 offset.x -= 1.0;
 offset.y -= 1.0;
 [scrollView setContentOffset:offset animated:NO];
 offset.x += 1.0;
 offset.y += 1.0;
 [scrollView setContentOffset:offset animated:NO];
}
</code></pre>

[Edit] As of iOS 4.3 (and possibly earlier) this also appears to work

<pre><code>- (void)killScroll 
{
 CGPoint offset = scrollView.contentOffset;
 [scrollView setContentOffset:offset animated:NO];
}
</code></pre>

blocks|key|3244221|text|对我来说，David+Lui's+accepted+answer+above不适合我。这就是我最终要做的：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3244222|-+(void)killScroll+{
++++self.scrollView.scrollEnabled+=+NO;
++++self.scrollView.scrollEnabled+=+YES;
}|code-block|syntax|javascript|3244223|不管怎样，我使用的是iOS+6.0+iPhone模拟器。|3244224|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/3421387/470225^0|5|X|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|F|7|W|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|X|8|@]|9|@]|C|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

For me, <a href="https://stackoverflow.com/a/3421387/470225">David Lui's accepted answer above</a> didn't work for me. This is what I ended up doing:

<pre><code>- (void)killScroll {
 self.scrollView.scrollEnabled = NO;
 self.scrollView.scrollEnabled = YES;
}
</code></pre>

For what it is worth, I'm using the iOS 6.0 iPhone Simulator.

blocks|key|300908|text|一般的答案是，[scrollView+setContentOffset:offset+animated:NO]是而不是[scrollView+setContentOffset:offset]的！|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|BOLD|entityRanges|data|300909|300910|[scrollView+setContentOffset:offset+animated:NO]实际上会停止任何正在运行的动画，animation.|unordered-list-item|300911|[scrollView+setContentOffset:offset]不会停止任何正在运行的动画。|300912|与scrollView.contentOffset+=+offset相同:不会停止任何正在运行的动画。|300913|300914|这在任何地方都没有文档记录，但这是在iOS+6.1和iOS+7.1上测试过的行为-可能也是在之前。|300915|因此，停止正在运行的动画/减速的解决方案非常简单：|300916|[scrollView+setContentOffset:scrollView.contentOffset+animated:NO];|code-block|syntax|javascript|300917|基本上是刘大卫在他编辑的答案中所说的。但我想说清楚的是，这两个是不同的API。|300918|Swift+3:|300919|scrollView.setContentOffset(scrollView.contentOffset,+animated:false)|300920|entityMap^0|7|1C|1N|10|1K|14|0|0|0|1C|0|0|10|0|1|X|0|0|0|G|4|0|0|0|0|8|0|0^^$0|@$1|2|3|4|5|6|7|16|8|@$9|17|A|18|B|C]|$9|19|A|1A|B|C]|$9|1B|A|1C|B|D]]|E|@]|F|$]]|$1|G|3|-4|5|6|7|1D|8|@]|E|@]|F|$]]|$1|H|3|I|5|J|7|1E|8|@$9|1F|A|1G|B|C]]|E|@]|F|$]]|$1|K|3|L|5|J|7|1H|8|@$9|1I|A|1J|B|C]]|E|@]|F|$]]|$1|M|3|N|5|J|7|1K|8|@$9|1L|A|1M|B|C]]|E|@]|F|$]]|$1|O|3|-4|5|6|7|1N|8|@]|E|@]|F|$]]|$1|P|3|Q|5|6|7|1O|8|@]|E|@]|F|$]]|$1|R|3|S|5|6|7|1P|8|@$9|1Q|A|1R|B|D]]|E|@]|F|$]]|$1|T|3|U|5|V|7|1S|8|@]|E|@]|F|$W|X]]|$1|Y|3|Z|5|6|7|1T|8|@]|E|@]|F|$]]|$1|10|3|11|5|6|7|1U|8|@$9|1V|A|1W|B|D]]|E|@]|F|$]]|$1|12|3|13|5|V|7|1X|8|@]|E|@]|F|$W|X]]|$1|14|3|-4|5|6|7|1Y|8|@]|E|@]|F|$]]]|15|$]]

The generic answer is, that <code>[scrollView setContentOffset:offset animated:NO]</code> is not the same as <code>[scrollView setContentOffset:offset]</code> !

<ul>
<li><code>[scrollView setContentOffset:offset animated:NO]</code> actually stops any running animation.</li>
<li><code>[scrollView setContentOffset:offset]</code> doesn't stop any running animation. </li>
<li>Same for <code>scrollView.contentOffset = offset</code>: doesn't stop any running animation. </li>
</ul>

That's not documented anywhere, but that's the behavior as tested on iOS 6.1 &amp; iOS 7.1 - probably also before.

So the solution to stop a running animation / deceleration is simple as that:

<pre><code>[scrollView setContentOffset:scrollView.contentOffset animated:NO];
</code></pre>

Basically what David Liu said in his edited answer. But I wanted to make clear, that these two APIs are NOT the same.

Swift 3:

<pre><code>scrollView.setContentOffset(scrollView.contentOffset, animated:false)
</code></pre>

blocks|key|3030027|text|实际上..。最“现代”的方式是-->|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3030028|scrollview.panGestureRecognizer.enabled+=+false;
scrollview.panGestureRecognizer.enabled+=+true;|code-block|syntax|javascript|3030029|这将停用手势识别器，该识别器负责滚动片刻，这将杀死当前的触摸。用户需要抬起手指并将其放回原处才能再次开始滚动。|3030030|编辑:这实际上只是终止当前用户的拖动，但如果滚动视图当前处于此状态，则不会立即停止减速。要做到这一点，编辑接受的答案几乎是最好的方式xD|3030031|[scrollview+setContentOffset:+scrollview.contentOffset+animated:false];|3030032|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Actually ... The most "modern" way would be -->

<pre><code>scrollview.panGestureRecognizer.enabled = false;
scrollview.panGestureRecognizer.enabled = true;
</code></pre>

This deactivates the gesture-recognizer that is responsible for scrolling for just a moment which will kill the current touch. The user would need to lift the finger and put it back down to start scrolling again.

Edit: This actually just kills the current dragging of the user but does not immediately stop the deceleration if the scrollview is in this state currently. To do this the accepted answers edit is pretty much the best way xD

<pre><code>[scrollview setContentOffset: scrollview.contentOffset animated:false];
</code></pre>

blocks|key|298578|text|这是我对我的滚动视图和所有其他相关子类所做的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|298579|-+(void)scrollViewWillEndDragging:(UIScrollView+*)scrollView+withVelocity:(CGPoint)velocity+targetContentOffset:(inout+CGPoint+*)targetContentOffset
+{
++++*targetContentOffset+=+scrollView.contentOffset;
+}|code-block|syntax|javascript|298580|这会将targetContentOffset设置为scrollView的当前偏移量，从而使滚动停止，因为它已经到达目标。实际上，使用一个目的是用户可以设置目标contentOffset的方法是有意义的。|offset|length|style|CODE|298581|斯威夫特|298582|func+scrollViewWillEndDragging(_+scrollView:+UIScrollView,+withVelocity+velocity:+CGPoint,+targetContentOffset:+UnsafeMutablePointer<CGPoint>)+{
++++targetContentOffset.pointee+=+scrollView.contentOffset
}|298583|entityMap^0|0|0|3|J|P|A|27|D|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@$I|V|J|W|K|L]|$I|X|J|Y|K|L]|$I|Z|J|10|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|11|8|@]|9|@]|A|$]]|$1|O|3|P|5|D|7|12|8|@]|9|@]|A|$E|F]]|$1|Q|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|R|$]]

This is what I do for my scroll views and all other related subclasses:
<pre><code>- (void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset
 {
 *targetContentOffset = scrollView.contentOffset;
 }
</code></pre>
This sets the <code>targetContentOffset</code> to the <code>scrollView</code>'s current offset, thus making the scrolling to stop because it has reached the target.
It actually makes sense to use a method whose purpose is that users could set the targeted <code>contentOffset</code>.
<h3>Swift</h3>
<pre><code>func scrollViewWillEndDragging(_ scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer&lt;CGPoint&gt;) {
 targetContentOffset.pointee = scrollView.contentOffset
}
</code></pre>

blocks|key|303659|text|这个答案对我很有效：Deactivate+UIScrollView+decelerating|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|303660|-(void)scrollViewWillBeginDecelerating:(UIScrollView+*)scrollView{
++++[scrollView+setContentOffset:scrollView.contentOffset+animated:YES];
}|code-block|syntax|javascript|303661|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/1105647/deactivate-uiscrollview-decelerating^0|A|10|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

This answer worked for me:
<a href="https://stackoverflow.com/questions/1105647/deactivate-uiscrollview-decelerating">Deactivate UIScrollView decelerating</a>

<pre><code>-(void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView{
 [scrollView setContentOffset:scrollView.contentOffset animated:YES];
}
</code></pre>

blocks|key|3244281|text|在swift中停止滚动|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|3244282|scrollView.setContentOffset(scrollView.contentOffset,+animated:+false)|code-block|syntax|javascript|3244283|entityMap^0|1|5|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Stop the scroll in swift:

<pre><code>scrollView.setContentOffset(scrollView.contentOffset, animated: false)
</code></pre>

blocks|key|298590|text|我已经在集合视图中尝试过这种方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|298591|self.collectionView.collectionViewLayout.finalizeCollectionViewUpdates()|offset|length|style|CODE|298592|entityMap^0|0|0|20|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@$D|L|E|M|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

I have tried this methods in collectionview:

<code>self.collectionView.collectionViewLayout.finalizeCollectionViewUpdates()</code>

blocks|key|298601|text|这在Swift+4.2中适用|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|298602|+++func+killScroll()+{
++++self.scrollView.isScrollEnabled+=+false;
++++self.scrollView.isScrollEnabled+=+true;
}|code-block|syntax|javascript|298603|..。作为扩展：|298604|extension+UIScrollView+{
++++func+killScroll()+{
++++++++self.isScrollEnabled+=+false;
++++++++self.isScrollEnabled+=+true;

++++}
}|298605|entityMap^0|2|9|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|P|$]]

This works for me in Swift 4.2:

<pre><code> func killScroll() {
 self.scrollView.isScrollEnabled = false;
 self.scrollView.isScrollEnabled = true;
}
</code></pre>

... as an extension:

<pre><code>extension UIScrollView {
 func killScroll() {
 self.isScrollEnabled = false;
 self.isScrollEnabled = true;

 }
}
</code></pre>

blocks|key|298628|text|我想仅当scrollview中的某个UIView是滑动过程中触摸的来源时才禁用滚动。将UIView移出UIScrollView需要相当多的重构，因为我们有一个复杂的视图层次结构。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|298629|作为一种变通办法，我在想要防止滚动的子视图中添加了一个UIPanGestureRecognizer。此UIPanGestureRecognizer将cancelsTouchesInView，从而阻止UIScrollView的panGesture被激活。|offset|length|style|CODE|298630|这有点“hack”，但这是一个超级容易的改变，如果你使用的是XIB或Storyboard，你所需要做的就是将平移手势拖到有问题的子视图上。|298631|entityMap^0|0|22|K|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

I wanted to disable scrolling only when a certain UIView within the scrollview is the source of the touch during the swipe. It would have required quite a bit of refactoring to move the UIView outside of the UIScrollView, as we had a complex view hierarchy.

As a workaround, I added a single UIPanGestureRecognizer to the subview in which I wanted to prevent from scrolling. This UIPanGestureRecognizer will <code>cancelsTouchesInView</code> which prevents the UIScrollView's panGesture from activating.

It's a little bit of a 'hack', but it's a super easy change, and if you're using a XIB or Storyboard, all you need to do is drag the pan gesture onto the subview in question.

blocks|key|3030233|text|禁用仅滚动用户交互。(swift)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3030234|scrollView.isScrollEnabled+=+false|code-block|syntax|javascript|3030235|在拖动后的滚动动画过程中禁用。(swift)|3030236|var+scrollingByVelocity+=+false

func+scrollViewWillBeginDecelerating(_+scrollView:+UIScrollView)+{
++++if+!scrollingByVelocity+{
++++++++scrollView.setContentOffset(scrollView.contentOffset,+animated:+false)
++++}
}|3030237|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<h3>Disable just scroll user interaction. (swift)</h3>

<pre><code>scrollView.isScrollEnabled = false
</code></pre>

<h3>Disable in during scroll animation after dragging. (swift)</h3>

<pre><code>var scrollingByVelocity = false

func scrollViewWillBeginDecelerating(_ scrollView: UIScrollView) {
 if !scrollingByVelocity {
 scrollView.setContentOffset(scrollView.contentOffset, animated: false)
 }
}
</code></pre>

blocks|key|3244396|text|SWift+5%2B|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|3244397|使用扩展实现|3244398|extension+UIScrollView++{
++++
++++func+stopDecelerating()+{
++++++++let+contentOffset+=+self.contentOffset
++++++++self.setContentOffset(contentOffset,+animated:+false)
++++}
}|code-block|syntax|javascript|3244399|使用的|3244400|++++myScrollView.stopDecelerating()
++++//+your+stuff|3244401|entityMap^0|0|8|0|0|0|0|2|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|W|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|X|8|@$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|O|3|P|5|J|7|10|8|@]|D|@]|E|$K|L]]|$1|Q|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|R|$]]

SWift 5+
by using Extension
<pre><code>extension UIScrollView {
 
 func stopDecelerating() {
 let contentOffset = self.contentOffset
 self.setContentOffset(contentOffset, animated: false)
 }
}
</code></pre>
use
<pre><code> myScrollView.stopDecelerating()
 // your stuff
</code></pre>

Note: The <a href="https://stackoverflow.com/questions/986392/programmatically-force-a-uiscrollview-to-stop-scrolling-for-sharing-a-table-view">answer given here</a> doesn't work for me.

I have a UIScrollView (not a table view, just a custom thing), and when the user takes certain actions, I want to kill any scrolling (dragging or deceleration) inside the view. I've tried doing e.g. this:

<pre><code>[scrollView scrollRectToVisible:CGRectInset([scrollView bounds], 10, 10) animated:NO];
</code></pre>

on the theory that, given a rect that's already known visible, the scrolling will just stop where it is, but it turns out that this doesn't have any effect-- apparently the scroll view sees that the given rect is in bounds and takes no action. I can get the scroll to stop, if I give a rect that is definitely outside the currently-visible bounds, but inside the contentSize of the view. This seems to halt the view as expected... but also causes it to jump to some other location. I could probably do a little playing around at the margins to get this to work reasonably OK, but does anyone know of a clean way to halt a scroll view that's doing its thing?

Thanks.

How can I programmatically force-stop scrolling in a UIScrollView?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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注意：不适用于我。我有一个UIScrollView (不是表格视图，只是一个自定义的东西)，当用户执行某些操作时，我想终止视图中的任何滚动(拖动或减速)。我试过这样做，例如：[scrollView scrollRectToVisible:CGRectInset([scrollView bounds], 10, 10) ...

问如何以编程方式强制停止在UIScrollView中滚动？
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问如何以编程方式强制停止在UIScrollView中滚动？
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