iphone - 确定触摸是否发生在uiview的子视图中 [英] iphone - determine if touch occurred in subview of a uiview

问题描述

   - （BOOL）pointInside：（CGPoint）point withEvent：（UIEvent *）事件
 {
如果（触摸发生在子视图中）{
 return YES; 
} 
 
 return NO; 
} 
  

我可以在if语句中添加什么？我想检测子视图中是否发生触摸，而不管它是否位于UIView的框架内。

解决方案

尝试：

   - （BOOL）pointInside：（CGPoint）point withEvent：（UIEvent *）event 
 {
 return CGRectContainsPoint（subview.frame，point）; 
} 
  

如果要在您实现的视图内部返回YES这个方法，使用这个代码：（如果你想添加手势识别器到位于容器边界之外的子视图）

   - （BOOL）pointInside：（CGPoint）point withEvent：（UIEvent *）event 
 {
 if（[super pointInside：point withEvent：event]）
 {
 return YES ; 
} 
 else 
 {
 return CGRectContainsPoint（subview.frame，point）; 
} 
} 
  

In a subclass of UIView I have this:

    -(BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event
    {
       if(touch occurred in a subview){
         return YES;
       }

       return NO;
    }

What can I put in the if statement? I want to detect if a touch occurred in a subview, regardless of whether or not it lies within the frame of the UIView.

解决方案

Try that:

- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event
{
    return CGRectContainsPoint(subview.frame, point);
}

If you want to return YES if the touch is inside the view where you implement this method, use this code: (in case you want to add gesture recognizers to a subview that is located outside the container's bounds)

- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event
{
    if ([super pointInside:point withEvent:event])
    {
        return YES;
    }
    else
    {
        return CGRectContainsPoint(subview.frame, point);
    }
}

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