CGRect(x:40, y:100,width:240, height:44))
label.text = ””
self.view.addSubview(label)
let button = UIButton...(frame:CGRect(x:40, y:180,width:240, height:44))
button.setTitle(“打开新的视图控制器”, for:UIControlState())...x:40, y:100,width:240, height:44))
label.text = labelTxt
self.view.addSubview(label)
let button = UIButton...(frame:CGRect(x:40, y:180,width:240, height:44))
button.setTitle(“关闭”, for:UIControlState())
button.backgroundColor