swift 基础学习一

概述1. 利用NSUserDefaults存储用户名和密码 （1）获取用户名和密码 userTextFeild.text = NSUserDefaults.standardUserDefaults().valueForKey("userName") as! String! passWordTextFeild.text = NSUserDefaults.standardUserDefa

1. 利用NSUserDefaults存储用户名和密码

（1）获取用户名和密码

 userTextFeild.text = NSUserDefaults.standardUserDefaults().valueForKey("username") as! String!        passWordTextFeild.text = NSUserDefaults.standardUserDefaults().valueForKey("password") as! String!

（2）存储用户名和密码

// MARK: 点击事件    func loginbuttonClick(sender: UIbutton!)    {        print("UiSlider Vaule: \(sender.tag)")                if userTextFeild.text == "ww" && passWordTextFeild.text == "123456"        {            NSUserDefaults.standardUserDefaults().setobject(userTextFeild.text,forKey: "username")            NSUserDefaults.standardUserDefaults().setobject(passWordTextFeild.text,forKey: "passWord")            NSUserDefaults.standardUserDefaults().synchronize()                        let rootVC = TFTabbarVIEwController()            self.navigationController!.pushVIEwController(rootVC,animated: false)        }                else        {           let alertVIEw = UIAlertVIEw()           alertVIEw.Title = "提示"           alertVIEw.message = "账户或密码输入错误"           //alertVIEw.addbuttonWithTitle("我知道了")           alertVIEw.addbuttonWithTitle("确定")           alertVIEw.cancelbuttonIndex=0           alertVIEw.delegate=self;           alertVIEw.show()        }    }

2. UIbutton 初始化

 let loginbutton = UIbutton(frame: CGRectMake(10,240,300,40))        loginbutton.setTitle("登录",forState:UIControlState.normal)        loginbutton.backgroundcolor = UIcolor.redcolor()        loginbutton.tag = 999        loginbutton.addTarget(self,action: "loginbuttonClick:",forControlEvents: UIControlEvents.touchUpInsIDe)        self.vIEw.addSubvIEw(loginbutton)

3. UIImageVIEw初始化，以及在它上面添加图片

 let backbutton = UIbutton(frame: CGRectMake(0,12,70,44))        backbutton.addTarget(self,action: "backBtn:",forControlEvents: UIControlEvents.touchUpInsIDe)        self.vIEw.addSubvIEw(backbutton)               let arrowVIEw=UIImageVIEw(image:UIImage(named:"icon-driver-zhaohuo-back.png"))       arrowVIEw.frame=CGRectMake(0,50,35)       backbutton.addSubvIEw(arrowVIEw)

4. UILabel初始化

 TitleLable = UILabel(frame: CGRectMake(0,25,self.vIEw.frame.size.wIDth,30))        TitleLable.text = Title as String        TitleLable.textAlignment = NSTextAlignment.Center        TitleLable.Font=UIFont(name:"Thonburi",size:18)        TitleLable.backgroundcolor = UIcolor.clearcolor()        self.navigationVIEw.addSubvIEw(TitleLable);

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