[英]Multi gesture recognizer on one view
My working code slides a label of to the left of the window and slide it again to the right to show it fully. 我的工作代码将标签滑动到窗口的左侧,然后再次将其滑动到右侧以完全显示它。 Since I am learning swift, I would appreciate your comments to improve on it.
由于我正在学习快速,因此,感谢您提出的改进意见。 I included some factoring which failed to work.
我包括一些无法正常工作的因素。
Working code: 工作代码:
import UIKit
class ViewController: UIViewController {
@IBOutlet weak var myLabel: UILabel!
@IBOutlet var parentView: UIView!
var swipGestureRight: UISwipeGestureRecognizer!
var swipGestureLeft: UISwipeGestureRecognizer!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
myLabel.userInteractionEnabled = true
swipGestureLeft = UISwipeGestureRecognizer(target: self, action: Selector("swipViewLeft:"))
swipGestureLeft.direction = .Left
parentView.gestureRecognizers = [swipGestureLeft]
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func swipViewLeft(gesture: UISwipeGestureRecognizer){
UIView.animateWithDuration(0.3, animations: {self.myLabel.center.x -= (self.myLabel.bounds.width)}, completion: nil)
swipGestureRight = UISwipeGestureRecognizer(target: self, action: Selector("swipViewRight:"))
swipGestureRight.direction = .Right
parentView.gestureRecognizers = [swipGestureRight]
}
func swipViewRight(gesture: UISwipeGestureRecognizer){
UIView.animateWithDuration(0.3, animations: {self.myLabel.center.x += (self.myLabel.bounds.width)}, completion: nil)
swipGestureLeft = UISwipeGestureRecognizer(target: self, action: Selector("swipViewLeft:"))
swipGestureLeft.direction = .Left
parentView.gestureRecognizers = [swipGestureLeft]
}
}
Failed after trying to improve: 尝试改进后失败:
import UIKit
class ViewController: UIViewController {
@IBOutlet weak var myLabel: UILabel!
@IBOutlet var parentView: UIView!
var swipGestureRecognizer: UISwipeGestureRecognizer!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
myLabel.userInteractionEnabled = true
swipGestureRecognizer = UISwipeGestureRecognizer(target: self, action: Selector("swipping:"))
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func swipping(gestureRecognizer: UISwipeGestureRecognizer){
if gestureRecognizer.direction == .Left {
parentView.gestureRecognizers = [gestureRecognizer]
UIView.animateWithDuration(0.3, animations: {self.myLabel.center.x -= (self.myLabel.bounds.width)}, completion: nil)
} else {
UIView.animateWithDuration(0.3, animations: {self.myLabel.center.x += (self.myLabel.bounds.width)}, completion: nil)
}
}
}
How about move 怎么样
parentView.gestureRecognizers = [gestureRecognizer]
to viewDidLoad()
. 查看
viewDidLoad()
。
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