如何实现触摸内部在touchesBegan，touchesEnded [英] How to Implement Touch Up Inside in touchesBegan, touchesEnded

问题描述

我想知道如果有人知道如何实现触摸内部响应，当用户按下然后举起他们的手指在 touchesBegan ， touchesEnded 方法。我知道这可以通过 UITapGestureRecognizer 来实现，但实际上我想让它只工作在一个快速点击（ UITapGestureRecognizer ，如果你把你的手指在那里很长一段时间，然后提升，它仍然执行）。

实际上，使用 UILongPressGesturizer 一个更好的解决方案来模仿 UIButton （ touchUpInside ， touchUpOutside ， touchDown 等）：

  - （void）longPress：（UILongPressGestureRecognizer *）longPressGestureRecognizer 
 {
 if（longPressGestureRecognizer.state == UIGestureRecognizerStateBegan || longPressGestureRecognizer.state == UIGestureRecognizerStateChanged）
 {
 
 CGPoint triggeredPoint = [longPressGestureRecognizer locationInView：self]; 
 
 if（CGRectContainsPoint（self.bounds，touchedPoint））
 {
 [self addHighlights]; 
} 
 else 
 {
 [self removeHighlights]; 
} 
} 
 else if（longPressGestureRecognizer.state == UIGestureRecognizerStateEnded）
 {
 if（self.highlightView.superview）
 {
 [self removeHighlights]; 
} 
 
 CGPoint triggeredPoint = [longPressGestureRecognizer locationInView：self]; 
 
 if（CGRectContainsPoint（self.bounds，touchedPoint））
 {
 if（[self.delegate respondingToSelector：@selector（buttonViewDidTouchUpInside :)]）
 {
 [self.delegate buttonViewDidTouchUpInside：self]; 
} 
} 
} 
} 
  

I'm wondering if someone knows how to implement the "touch up inside" response when a user pushes down then lifts their finger in the touchesBegan, touchesEnded methods. I know this can be done with UITapGestureRecognizer, but actually I'm trying to make it so that it only works on a quick tap (with UITapGestureRecognizer, if you hold your finger there for a long time, then lift, it still executes). Anyone know how to implement this?

解决方案

Using the UILongPressGesturizer is actually a much better solution to mimic all of the functionality of a UIButton (touchUpInside, touchUpOutside, touchDown, etc.):

- (void) longPress:(UILongPressGestureRecognizer *)longPressGestureRecognizer
{
    if (longPressGestureRecognizer.state == UIGestureRecognizerStateBegan || longPressGestureRecognizer.state == UIGestureRecognizerStateChanged)
    {

        CGPoint touchedPoint = [longPressGestureRecognizer locationInView: self];

        if (CGRectContainsPoint(self.bounds, touchedPoint))
        {
            [self addHighlights];
        }
        else
        {
            [self removeHighlights];
        }
    }
    else if (longPressGestureRecognizer.state == UIGestureRecognizerStateEnded)
    {
        if (self.highlightView.superview)
        {
            [self removeHighlights];
        }

        CGPoint touchedPoint = [longPressGestureRecognizer locationInView: self];

        if (CGRectContainsPoint(self.bounds, touchedPoint))
        {
            if ([self.delegate respondsToSelector:@selector(buttonViewDidTouchUpInside:)])
            {
                [self.delegate buttonViewDidTouchUpInside:self];
            }
        }
    }
}

这篇关于如何实现触摸内部在touchesBegan，touchesEnded的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！