iOS开发-UI (十)StoryBoard

//取得Main.StoryBoard

UIStoryboard *storyBoard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];

//通过StoryBoardID获得对应的控制器对象

UIViewController *ctl = [storyBoard instantiateViewControllerWithIdentifier:@"ctlC"];

//代码跳转
[self.navigationController pushViewController:ctl animated:YES];

//UIStoryBoard的连线回跳方法

-(IBAction)unwindingSegue:(UIStoryboardSegue *)segue{

NSLog(@"sourceViewController = %@ destinationViewController = %@",segue.sourceViewController,segue.destinationViewController);

//作用：在反向传值当中会应用到

//当切换界面（push，present）的时候，就会调用以下方法

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{


    //正向传值

    if ([segue.identifier isEqualToString:@"login"]) {

        LoginViewController *ctl = segue.destinationViewController;

        //赋值

        ctl.userNameStr = self.userNameTF.text;

        ctl.passwordStr = self.passWordTF.text;

    }

//UIStoryBoard的连线回跳方法

//先实现回跳方法，才能连线

-(IBAction)unwindingSegue:(UIStoryboardSegue *)segue{
    //反向传值（UIStoryBoard专用）
    //判断是否点击的是注册完成

    if ([segue.identifier isEqualToString:@"finish"]) {
        //严谨

        if ([segue.sourceViewController isKindOfClass:[RegisterViewController class]]) {

            RegisterViewController *ctl = segue.sourceViewController;

        //刷新UI

            self.userNameTF.text = ctl.userNameTF.text;

            self.passWordTF.text = ctl.passWordTF.text;

//作用：在反向传值当中会应用到
        }
    }