Swift-action table (Uiactionsheel) usage, also called bottom warning box

1, create an action table below (or call the bottom warning box) and pop up the display

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class ViewController: UIViewController,UIActionSheetDelegate {    override func viewDidLoad() {        super.viewDidLoad()               var actionSheet=UIActionSheet()        //actionSheet.title = "请选择操作"        actionSheet.addButtonWithTitle("取消")        actionSheet.addButtonWithTitle("动作1")        actionSheet.addButtonWithTitle("动作2")        actionSheet.cancelButtonIndex=0        actionSheet.delegate=self        actionSheet.showInView(self.view);    }    func actionSheet(actionSheet: UIActionSheet!,clickedButtonAtIndex buttonIndex:Int){            println("点击了："+actionSheet.buttonTitleAtIndex(buttonIndex))    }}

2, in the general case, the tool bar, or the label bar display in the way the call is not the same

123	actionSheet.showInView(self.view);  //一般情况actionSheet.showFromToolbar(self.navigationController.toolbar)  //工具条的情况下actionSheet.showFromTabBar(self.tabBar)  //标签条的情况下

Swift-action table (Uiactionsheel) usage, also called bottom warning box