Question

如何在UIView中获取手指敲击的坐标？（我不想使用大量的按钮）

谢谢

Answer 1

有两种方法可以实现这一目标。如果你已经有了你正在使用的UIView的子类，你可以覆盖该子类上的-touchesEnded:withEvent:方法，如下所示：

- (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
}

如果您还没有将UIView子类化，并且该视图归视图控制器所有，那么您可以使用UITapGestureRecognizer，如下所示：

// 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

我认为你的意思是识别手势（和触摸）。开始寻找如此广泛问题的最佳位置是Apple的示例代码Touches。它会传递大量信息。

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:是一种UIResponder方法，UIView和UIViewController都来自{{1}}。如果你谷歌这个方法，那么你会发现几个教程。来自Apple的MoveMe样本很好。

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)


}

如何在UIView中获取手指敲击的坐标？

5 个答案: