iOS Swift-从右到左自动滚动UILabel

这两列需要自动滚动（如选框）。但我做这件事有困难。我找到了两种解决方案，但不幸的是，它们都不起作用

非常感谢您的帮助

试试这个：

    let label = UILabel()

override func viewDidLoad() {
    super.viewDidLoad()
    label.frame = CGRectMake(320, 100, 200, 60)
    label.text = "This is my music line"
    self.view!.addSubview(label)
    NSTimer.scheduledTimerWithTimeInterval(2.0, target: self, selector: #selector(self.LabelAnimate), userInfo: nil, repeats: true)
}

func LabelAnimate() {
    UIView.animateWithDuration(3.0, delay: 0.0, options: .TransitionNone, animations: {() -> Void in
    self.label.frame = CGRectMake(-320, 100, 200, 60)
        }, completion: {(isDone: Bool) -> Void in
            self.label.frame = CGRectMake(320, 100, 200, 60)
    })
}
}