在Swift中，无论如何都知道要刷哪个对象? [英] In Swift is there anyway to know which object was swiped?

问题描述

我想将发送方redBox传递给功能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.

I want to pass the sender redBox to the function leftSwipeFunc. I don't know how to pass a parameter that's not UISwipeGestureREcognizer. Please help me if you know the answer.

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

func leftSwipeFunc(gesture:UISwipeGestureRecognizer){ }

推荐答案

手势识别器具有一个称为view的属性，该属性是它们所附加的UIView.因此，您可以在leftSwipeFunc内部使用该视图来获取视图:

Gesture recognizers have a property called view that is the UIView that they are attached to. So, you can use that inside of leftSwipeFunc to get the 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")
    }
}

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