Swift中,除了条形进度条外,还有环形进度条,效果图如下:
1,环形进度条的基本属性
(1)Style:
Large White:比较大的白色环形进度条
White:白色环形进度条
Gray:灰色环形进度条
(2)Color:
设置环形进度条的颜色
(3)Behavior:
Animating:勾选后环形进度条开始转动
Hides When Stopped:勾选后当环形进度条停止转动时自动隐藏
2,使用样例
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import UIKit class ViewController : UIViewController { var activityIndicator: UIActivityIndicatorView ! override func viewDidLoad() { super .viewDidLoad() activityIndicator = UIActivityIndicatorView (activityIndicatorStyle: UIActivityIndicatorViewStyle . Gray ) activityIndicator.center= self .view.center self .view.addSubview(activityIndicator); play() } func play(){ //进度条开始转动 activityIndicator.startAnimating() } func stop(){ //进度条停止转动 activityIndicator.stopAnimating() } override func didReceiveMemoryWarning() { super .didReceiveMemoryWarning() } } |