swift UIActivityIndivatorView使用

UIActivityIndivatorView 的使用

代码：

// 实例化 

let activityview = UIActivityIndicatorView(frame: CGRectMake(10.0, 10.0, 50.0, 50.0)) 

activityview.center = CGPoint(x:20, y:170)

activityview.backgroundColor = .red 

activityview.color  = .red 

activityview.style = .red 

activityview.startAnimating() 

// 停止转圈时隐藏

activityview.hidesWhenStopped = true  

activityview.tag = 1000

给UIActivityIndivatorView 上 添加一个手势

代码如下：

let tapSingle=UITapGestureRecognizer(target:self,action:#selector(stop))

tapSingle.numberOfTapsRequired = 1 

tapSingle.numberOfTouchesRequired=1

activityIndicator.addGestureRecognizer(tapSingle)