swift中UIActivityIndicatorView的使用

概述// 实例化let activityview = UIActivityIndicatorView(frame: CGRectMake(10.0, 10.0, 50.0, 50.0))self.view.addSubview(activityview) activityview.backgroundColor = UIColor.yellowColor() ac

// 实例化let activityvIEw = UIActivityIndicatorVIEw(frame: CGRectMake(10.0,10.0,50.0,50.0))self.vIEw.addSubvIEw(activityvIEw)        activityvIEw.backgroundcolor = UIcolor.yellowcolor()        activityvIEw.activityIndicatorVIEwStyle = UIActivityIndicatorVIEwStyle.WhiteLargeactivityvIEw.color = UIcolor.redcolor()        // 停止转圈圈时，隐藏activityvIEw.hIDesWhenStopped = trueactivityvIEw.startAnimating()        activityvIEw.tag = 1000

let swithch = UISwitch(frame: CGRectMake(100.0,0.0,0.0))self.vIEw.addSubvIEw(swithch)swithch.on = falseswithch.addTarget(self,action: Selector("switchValueChange:"),forControlEvents: UIControlEvents.ValueChanged)

// MARK: - switchValueChangefunc switchValueChange(sender:UISwitch){        let activityvIEw = self.vIEw.vIEwWithTag(1000) as! UIActivityIndicatorVIEw                let openStatus = sender.on        if openStatus        {            if !activityvIEw.isAnimating()            {                activityvIEw.startAnimating()            }        }        else        {            activityvIEw.stopAnimating()        }}

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