Question

我想在我的视图中拖动textField。但我的代码问题很小。

这里是我的代码

   override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {

        var touch : UITouch! = touches.first as! UITouch

        location = touch.locationInView(self.view)

        bottomTextField.center = location
    }

    override func touchesMoved(touches: Set<NSObject>, withEvent event: UIEvent) {

        var touch : UITouch! = touches.first as! UITouch

        location = touch.locationInView(self.view)

        bottomTextField.center = location
    }

问题是，如果我试图触摸TextField并拖动它然后它不起作用。但是，如果我只是触摸其他地方并拖动我的手指然后TextField开始拖动。我想要只有触摸那个textFiel才能成功。

Answer 1

您可以通过向文本字段添加手势来实现此目的：

override func viewDidLoad() {
    super.viewDidLoad()


    var gesture = UIPanGestureRecognizer(target: self, action: Selector("userDragged:"))
    bottomTextField.addGestureRecognizer(gesture)
    bottomTextField.userInteractionEnabled = true
}

func userDragged(gesture: UIPanGestureRecognizer){
    var loc = gesture.locationInView(self.view)
    self.bottomTextField.center = loc

}

Answer 2

如果它可以帮助任何人，则以下是Swift 4.0和5.0接受的答案的更新的工作版本

override func viewDidLoad() {
    super.viewDidLoad()

    //Draggable textfields
    let gesture = UIPanGestureRecognizer(target: self, action: #selector(userDragged(gesture:)))

    bottomTextView.addGestureRecognizer(gesture)
            bottomTextView.isUserInteractionEnabled = true

}

@objc func userDragged(gesture: UIPanGestureRecognizer){
    let loc = gesture.location(in: self.view)
    self.bottomTextView.center = loc

}

TextField可在Swift iOS中拖拽

2 个答案: