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Swift - 操作表(UIActionSheet)的用法,也叫底部警告框

作者:hangge | 2015-01-16 16:27
(注:自IOS8起,建议使用UIAlertController代替UIActionSheet。点击查看UIAlertController的用法

1,下面创建一个操作表(或叫底部警告框)并弹出显示
import UIKit

class ViewController: UIViewController,UIActionSheetDelegate {
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let 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, didDismissWithButtonIndex buttonIndex: Int) {
        print("点击了:"+actionSheet.buttonTitleAtIndex(buttonIndex)!)
    }
}

2,在一般情况下,工具条,或标签条中显示的调用方式是不一样的
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
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