点击更改视图颜色然后返回原始颜色

Question

我正在尝试使用 UITapGestureRecognizer 在点击视图时更改 UIView 颜色，然后在 space 在 UIView 外部点击时恢复为原始白色。我可以让 UIView 改变颜色，但我无法让它变回白色。

  // viewDidLoad
let tapGestureRegonizer = UITapGestureRecognizer(target: self, action: 
#selector(mortgagePenaltyVC.viewCellTapped(recognizer:)))
    tapGestureRegonizer.numberOfTapsRequired = 1
    mortgageLenerViewCell.addGestureRecognizer(tapGestureRegonizer)

@objc func viewCellTapped (recognizer: UITapGestureRecognizer){
    print("label Tapped")


    mortgageLenerViewCell.backgroundColor = UIColor.lightGray



    }

Answer 1

我认为您可以使用 touchesBegan 方法在视图之外进行触摸，如下所示

这段代码对我有用...

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    let touch = touches.first
    guard let location = touch?.location(in: mortgageLenerViewCell) else { return }
    if !labelToClick.frame.contains(location) {
        print("Tapped outside the view")
        mortgageLenerViewCell.backgroundColor = UIColor.white
    }else {
        print("Tapped inside the view")
        mortgageLenerViewCell.backgroundColor = UIColor.lightGray
    }
}

这里labelToClick是你要点击的标签&mortgageLenerViewCell是labelToClick的父视图

如有任何疑问，请随时提出...

谢谢。

点击更改视图颜色然后返回原始颜色

change view colour on tap then back to original colour

uiview

ios

uitapgesturerecognizer

swift