TextField可在Swift iOS中拖拽 [英] TextField Draggable in Swift iOS

问题描述

我想在我的视图中拖动textField。但我的代码问题很小。

I want to drag textField around my view. but im having small problem with my code.

这里我的代码

   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。但如果我只是触摸其他地方然后拖动我的手指然后TextField开始拖动。我只想触摸那个textFiel就可以了。

Problem is if i tried to touch on the TextField and drag then it doesn't work. but if i just touch somewhere else and drag my finger then TextField start to drag. i want t make it only if i touch on that textFiel.

推荐答案

你可以通过在文本字段中添加一个手势来实现这一点。 ：

You can achieve this by adding a gesture to the text field:

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

}

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