我只想在检测到长按后实现平移手势。我正在监视“UIGestureRecognizerState.Changed”的长按手势,并调用我的选择器来处理那里的平移。选择器触发(我的“print()”检查显示在控制台中),但我必须在 uiview (blueRec) 实际移动/翻译之前抬起手指。
我知道长按和平移手势本质上都是连续的,但是我如何使用触发长按的初始按下来平移触摸的 uiview (blueRec)?我不相信这完全是-requireGestureRecognizerToFail的情况:
我已经剥离了下面的代码,只包含基本行。
@IBOutlet weak var graySuper: UIView!
@IBOutlet weak var blueRec: UIView!
@IBOutlet weak var blueLeading: NSLayoutConstraint!
@IBOutlet weak var blueTop: NSLayoutConstraint!
var longPressGesture:UILongPressGestureRecognizer!
override func viewDidLoad() {
super.viewDidLoad()
self.longPressGesture = UILongPressGestureRecognizer(target:self, action:"handleLongpress:")
self.longPressGesture.minimumPressDuration = 2
self.blueRec.addGestureRecognizer(self.longPressGesture)
}
func handleLongpress(sender:UILongPressGestureRecognizer) {
print("LPress")
switch (sender.state) {
case UIGestureRecognizerState.Began:
self.blueRec.center = sender.locationInView(self.graySuper)
break;
case UIGestureRecognizerState.Changed:
self.blueRec.center = sender.locationInView(self.graySuper)
break;
case UIGestureRecognizerState.Ended:
print("Press Ended ")
break;
default:
break;
}
}