alertView的使用

 let alertView = UIAlertView()

    alertView.delegate = self

    alertView.alertViewStyle = UIAlertViewStyle(rawValue: 2)!;

    alertView.title = "標(biāo)題"

    alertView.message = "這個是UIAlertView的默認樣式"

    alertView.addButton(withTitle: "取消")

    alertView.addButton(withTitle: "好的")

    alertView.show()

后來發(fā)現(xiàn) 這個方法還是很方便的

    let alertController = UIAlertController(title: "添加相冊",

                                            message: "請輸入相冊名稱", preferredStyle: .alert)

    alertController.addTextField {

        (textField: UITextField!) -> Void in

        textField.placeholder = "相冊名稱"

    }



    let cancelAction = UIAlertAction(title: "取消", style: .cancel, handler: nil)

    let okAction = UIAlertAction(title: "好的", style: .default, handler: {

        action in

        //也可以用下標(biāo)的形式獲取textField let login = alertController.textFields![0]

        let name = alertController.textFields!.first!

        print("用戶名：\(name.text)")

    })

    alertController.addAction(cancelAction)

    alertController.addAction(okAction)

    self.present(alertController, animated: true, completion: nil)

swift 頁面跳轉(zhuǎn)

    let ptotoView = PhotoController()
    //跳轉(zhuǎn)
    self.navigationController?.pushViewController(ptotoView , animated: true)