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UISwitch开关控件的使用
func test3() {
//创建一个显示区域
let rect = CGRect(x: 130, y: 100, width: 0, height: 0);
//初始化开关对象。设置大小位置
let uiSwitch = UISwitch(frame: rect);
//设置开关的默认状态为选中
uiSwitch.setOn(true, animated: true);
//给开关对象 设置状态监听
uiSwitch.addTarget(self, action: #selector(ViewController.test3OnClick(_ :)), for: UIControlEvents.valueChanged);
self.view.addSubview(uiSwitch);
}
@objc func test3OnClick(_ sender:UISwitch){
var str = "Turn on the switch";
if (!sender.isOn) {
str="Ture off the switch";
}
let dialog = UIAlertController(title: "switch state", message: str, preferredStyle: UIAlertControllerStyle.alert);
let dialogAction=UIAlertAction(title: "ok", style: UIAlertActionStyle.default, handler: nil);
dialog.addAction(dialogAction);
self.present(dialog, animated: true, completion: nil)
}