如何获取UIView中手指敲击的坐标？

Question

如何获取UIView中手指敲击的坐标？ （我宁愿不使用按钮的大阵列）

谢谢

Answer 1

有两种方法可以完成此操作。如果你已经得到了你使用的UIView的子类，你可以重写-touchesEnded:withEvent:方法上的子类，像这样：

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event 
{ 
    UITouch *aTouch = [touches anyObject]; 
    CGPoint point = [aTouch locationInView:self]; 
    // point.x and point.y have the coordinates of the touch 
} 

如果你还没有子类的UIView，虽然和视图是由视图控制器拥有或什么的，那么你可以使用一个UITapGestureRecognizer，像这样：

// when the view's initially set up (in viewDidLoad, for example) 
UITapGestureRecognizer *rec = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapRecognized:)]; 
[someView addGestureRecognizer:rec]; 
[rec release]; 

// elsewhere 
- (void)tapRecognized:(UITapGestureRecognizer *)recognizer 
{ 
    if(recognizer.state == UIGestureRecognizerStateRecognized) 
    { 
     CGPoint point = [recognizer locationInView:recognizer.view]; 
     // again, point.x and point.y have the coordinates 
    } 
} 

Answer 2

我假设你的意思的手势识别（和触摸）。开始寻找这样一个广泛问题的最佳地点是Apple的示例代码Touches。它遍历了大量的信息。

Answer 3

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { 
    UITouch *touch = [touches anyObject]; 
    CGPoint touchPoint = [touch locationInView:myView]; 
    NSLog("%lf %lf", touchPoint.x, touchPoint.y); 
} 

你需要做这样的事情。 touchesBegan:withEvent:是UIResponder的一种方法，其中UIView和UIViewController都是从中导出的。如果你谷歌这种方法，那么你会发现几个教程。 MoveMe来自苹果的样品是一个很好的例子。

Answer 4

func handleFrontTap(gestureRecognizer: UITapGestureRecognizer) { 
    print("tap working") 
    if gestureRecognizer.state == UIGestureRecognizerState.Recognized 
    { 
     `print(gestureRecognizer.locationInView(gestureRecognizer.view))` 
    } 
} 

Answer 5

斯威夫特3回答

let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.tapAction(_:))) 
yourView.addGestureRecognizer(tapGesture) 


func tapAction(_ sender: UITapGestureRecognizer) { 

     let point = sender.location(in: yourView) 


}