（iPhone）如何处理UITextView上的触摸？ [英] (iPhone) How to handle touches on a UITextView?

问题描述

我正在尝试处理iPhone的UITextView上的触摸。我成功设法通过创建UIImageViews的子类来处理点击和其他触摸事件，并实现touchesBegan方法...但是这显然不适用于UITextView :(

I'm trying to handle touches on a iPhone's UITextView. I successfully managed to handle taps and other touch events by creating a subclass of UIImageViews for example and implementing the touchesBegan method...however that doesn't work with the UITextView apparently :(

UITextView启用了用户交互和多点触控，只是为了确保......没有没有欢乐。有人设法处理这个吗？

The UITextView has user interaction and multi touch enabled, just to be sure...no no joy. Anyone managed to handle this?

推荐答案

UITextView（UIScrollView的子类）包含很多事件处理。它处理复制和粘贴以及数据检测器。也就是说，它可能是一个错误，它不会传递未处理的事件。

UITextView (subclass of UIScrollView) includes a lot of event processing. It handles copy and paste and data detectors. That said, it is probably a bug that it does not pass unhandled events on.

有一个简单的解决方案：你可以在你自己的版本中继承UITextView并强制你自己的touchesEnded（和其他事件处理消息），你应该调用 [super touchesBegan：touches withEvent：event]; 在每个触摸处理方法中。

There is a simple solution: you can subclass UITextView and impement your own touchesEnded (and other event handling messages) in your own versions, you should call[super touchesBegan:touches withEvent:event]; inside every touch handling method.

#import "MyTextView.h"  //MyTextView:UITextView
@implementation MyTextView

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
    NSLog(@"touchesBegan");
}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{
        [super touchesBegan:touches withEvent:event];
    NSLog(@"touchesMoved");
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{
    NSLog(@"****touchesEnded");
    [self.nextResponder touchesEnded: touches withEvent:event]; 
    NSLog(@"****touchesEnded");
    [super touchesEnded:touches withEvent:event];
    NSLog(@"****touchesEnded");
}

- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event{
[super touches... etc]; 
NSLog(@"touchesCancelled");
}

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