Xamarin的。iOS版本的UICollectionView的接受答案，便于复制和粘贴

var bottomOffset = new CGPoint (0, CollectionView.ContentSize.Height - CollectionView.Frame.Size.Height + CollectionView.ContentInset.Bottom);          
CollectionView.SetContentOffset (bottomOffset, false);

扩展UIScrollView添加一个scrollToBottom方法:

extension UIScrollView {
    func scrollToBottom(animated:Bool) {
        let offset = self.contentSize.height - self.visibleSize.height
        if offset > self.contentOffset.y {
            self.setContentOffset(CGPoint(x: 0, y: offset), animated: animated)
        }
    }
}

Valdyr，希望这对你有帮助

CGPoint bottomOffset = CGPointMake(0, [textView contentSize].height - textView.frame.size.height);

if (bottomOffset.y > 0)
 [textView setContentOffset: bottomOffset animated: YES];

类别来拯救!

将此添加到共享实用程序头的某处:

@interface UIScrollView (ScrollToBottom)
- (void)scrollToBottomAnimated:(BOOL)animated;
@end

然后是那个实用程序实现:

@implementation UIScrollView(ScrollToBottom)
- (void)scrollToBottomAnimated:(BOOL)animated
{
     CGPoint bottomOffset = CGPointMake(0, self.contentSize.height - self.bounds.size.height);
     [self setContentOffset:bottomOffset animated:animated];
}
@end

然后在任何你喜欢的地方执行它，例如:

[[myWebView scrollView] scrollToBottomAnimated:YES];

使用UIScrollView的setContentOffset:animated:函数滚动到Swift的底部。

let bottomOffset : CGPoint = CGPointMake(0, scrollView.contentSize.height - scrollView.bounds.size.height + scrollView.contentInset.bottom)
scrollView.setContentOffset(bottomOffset, animated: true)

我发现contentSize并没有真正反映文本的实际大小，所以当尝试滚动到底部时，它会有点偏离。确定实际内容大小的最佳方法实际上是使用NSLayoutManager的usedRectForTextContainer:方法:

UITextView *textView;
CGSize textSize = [textView.layoutManager usedRectForTextContainer:textView.textContainer].size;

要确定在UITextView中实际显示了多少文本，可以通过从帧高度中减去文本容器嵌入来计算。

UITextView *textView;
UIEdgeInsets textInsets = textView.textContainerInset;
CGFloat textViewHeight = textView.frame.size.height - textInsets.top - textInsets.bottom;

然后就很容易滚动了:

// if you want scroll animation, use contentOffset
UITextView *textView;
textView.contentOffset = CGPointMake(textView.contentOffset.x, textSize - textViewHeight);

// if you don't want scroll animation
CGRect scrollBounds = textView.bounds;
scrollBounds.origin = CGPointMake(textView.contentOffset.x, textSize - textViewHeight);
textView.bounds = scrollBounds;

一些数字用于参考空UITextView的不同大小。

textView.frame.size = (width=246, height=50)
textSize = (width=10, height=16.701999999999998)
textView.contentSize = (width=246, height=33)
textView.textContainerInset = (top=8, left=0, bottom=8, right=0)