先给大家展示下效果图，如果大家感觉还不错，请参考实现代码。
效果图如下所示：
源码
https://github.com/YouXianMing/Swift-Animations
//// MixedColorProgressViewController.swift// Swift-Animations//// Created by YouXianMing on 16/8/21.// Copyright ©
2016年 YouXianMing. All rights reserved.//import UIKitclass MixedColorProgressViewController: NormalTitleViewController {
private var upView : UIView!private var upLabel : UILabel!private var downView : UIView!private var downLabel : UILabel!private var timer : GCDTimer! = GCDTimer(inQueue: GCDQueue.mainQueue)override func setup() {
super.setup()downView = UIView(frame: CGRectMake(0, 0, 220, 17))downView.center = (contentView?.middlePoint)!downView.layer.cornerRadius = 2downView.backgroundColor = UIColor.whiteColor()downView.layer.masksToBounds = truecontentView?.addSubview(downView)downLabel = UILabel(frame: downView.bounds)downLabel.font = UIFont.HelveticaNeueThin(12.0)downLabel.text = "YouXianMing - iOS Programmer"downLabel.textColor = UIColor.redColor()downLabel.textAlignment = .CenterdownView.layer.borderWidth = 0.5downView.layer.borderColor = UIColor.redColor().CGColordownView.addSubview(downLabel)upView = UIView(frame: CGRectMake(0, 0, 220, 17))upView.center = (contentView?.middlePoint)!upView.layer.cornerRadius = 2upView.backgroundColor = UIColor.redColor()upView.layer.masksToBounds = truecontentView?.addSubview(upView)upLabel = UILabel(frame: upView.bounds)upLabel.font = UIFont.HelveticaNeueThin(12.0)upLabel.text = "YouXianMing - iOS Programmer"upLabel.textColor = UIColor.whiteColor()upLabel.textAlignment = .CenterupView.addSubview(upLabel)weak var wself = selftimer.event({
UIView.animateWithDuration(0.5, delay: 0, usingSpringWithDamping: 3, initialSpringVelocity: 0, options: .CurveEaseInOut, animations: {
wself?.upView.width = CGFloat(arc4random() % 220)}
, completion: nil)}
, timeIntervalWithSeconds: 1, delayWithSeconds: 1)timer.start()}
}
以上所述是小编给大家介绍的Swift中通过叠加UILabel实现混合进度条的方法，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对脚本之家网站的支持！
