ios - 在 Swift 中无论如何都知道哪个对象被刷过？

Question

我想将发件人 redBox 传递给函数 leftSwipeFunc。我不知道如何传递不是 UISwipeGestureREcognizer 的参数。如果您知道答案，请帮助我。

let swipeLeft = UISwipeGestureRecognizer(target: self, action: Selector("leftSwipeFunc:")) 
swipeLeft.direction = UISwipeGestureRecognizerDirection.Left
redBox.addGestureRecognizer(swipeLeft) 

func leftSwipeFunc(gesture:UISwipeGestureRecognizer){ }

Answer 1

手势识别器有一个名为 view 的属性，即它们附加到的 UIView。因此，您可以在 leftSwipeFunc 中使用它来获取 View :

func leftSwipeFunc(gesture: UISwipeGestureRecognizer) {
    let swipedView = gesture.view

    // Assuming redBox is a property of your view controller
    if swipedView == redBox {
        println("the redBox was swiped")
    } else {
        println("some other view was swiped")
    }
}