Swift自学记录

alertView的使用

 let alertView = UIAlertView()

    alertView.delegate = self

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

    alertView.title = "标题"

    alertView.message = "这个是UIAlertView的默认样式"

    alertView.addButton(withTitle: "取消")

    alertView.addButton(withTitle: "好的")

    alertView.show()

后来发现 这个方法还是很方便的

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

                                            message: "请输入相册名称", preferredStyle: .alert)

    alertController.addTextField {

        (textField: UITextField!) -> Void in

        textField.placeholder = "相册名称"

    }



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

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

        action in

        //也可以用下标的形式获取textField let login = alertController.textFields![0]

        let name = alertController.textFields!.first!

        print("用户名：\(name.text)")

    })

    alertController.addAction(cancelAction)

    alertController.addAction(okAction)

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

swift 页面跳转

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