UITextView内部UIScrollView滚动父项作为文本输入 [英] UITextView Inside UIScrollView Scrolling Parent as Text is Entered

问题描述

我有一个 UIScrollView ，其中包含 UITextView 。当文本输入 UITextView 时， UIScrollView 将滚动以确保文本在内容框架中完全可见。我不想要这个。

I have a UIScrollView that contains a UITextView. As text is entered into the UITextView the UIScrollView will scroll to ensure that the text is entirely visible in the content frame. I don't want this.

我已经在 UIScrollView 上禁用滚动，但是这没有效果。谁知道如何制止这个？可在此处找到示例项目： http://cl.ly/1P1u3y302r3q1f1C063K 。

I've disabled scrolling on the UIScrollView, however this has no effect. Anyone know how to stop this? A sample project can be found here: http://cl.ly/1P1u3y302r3q1f1C063K.

谢谢！

推荐答案

我遇到类似的问题 UITextView 。似乎 scrollEnabled 属性不会取消自动滚动。我通过覆盖 setContentOffset 解决了它：方法。

以下 preventScrolling 标志可能会有所帮助：

I had similar issues with UITextView. It seems scrollEnabled property does not cancel autoscrolling. I have solved it by overriding setContentOffset: method.
The following preventScrolling flag might help:

@interface MyScrollView : UIScrollView
@property (nonatomic, assign) BOOL preventScrolling;
@end

@implementation MyScrollView 
@synthesize preventScrolling;
-(void) setContentOffset:(CGPoint)contentOffset animated:(BOOL)animated
{
    if(!self.preventScrolling) {
        [super setContentOffset:contentOffset animated:animated];
    }
}
@end

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