UINavigationController(导航控制器)及跳转页面的方法

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[self.navigationController pushViewController:_registVC animated:YES];

一.UINavigationController(导航控制器)

UINavigationController可以控制多个UIViewController

1.初始化一个UINavigationController

<span style="font-size:14px;">self.window = [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];    [self.window makeKeyAndVisible];        LoginViewController *loginVC = [[LoginViewController alloc]init];        UINavigationController *navigationVC = [[UINavigationController alloc]initWithRootViewController:loginVC];        self.window.rootViewController = navigationVC;</span>

2.添加UINavigation

//UIBarButtonItem继承于UIBarItem        //1.初始化一个UIBarButtonItem    UIBarButtonItem *btnItem = [[UIBarButtonItem alloc]initWithTitle:@"注册" style:UIBarButtonItemStyleDone target:self action:@selector(btnItemAction:)];        /*    //2.title:修改UIBarButtonItem的名称    btnItem.title = @"adklfj";        //3.enabled:标识UIBarButtonItem是否为可编辑,其默认值为YES.    btnItem.enabled = NO;        //4.image:给UIBarButtonItem设置一张图片    btnItem.image = [[UIImage imageNamed:@"zx"]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];    */            //5.修改UINavigationController的title.    self.navigationItem.title = @"登陆";        //6.navigationBarHidden:隐藏navigationController的导航栏,默认值是NO    self.navigationController.navigationBarHidden = NO;        //7.//navigationBar:设置navigationBar.<span style="color:#FF0000;">translucent</span>(透明度)的值为NO,其默认值是YES;设置navigationBar的值为NO后,视图的(0,0)点就是在navigationBar的左下角.    self.navigationController.navigationBar.translucent = NO;

二.跳转页面的方法

1.从前往后跳转页面

- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated; // Uses a horizontal slide transition. Has no effect if the view controller is already in the stack.例如:

[self.navigationController pushViewController:_registVC animated:YES];

2.从后往前跳转页面

//这个方法是返回前一个界面- (UIViewController *)popViewControllerAnimated:(BOOL)animated; // Returns the popped controller.//这个方法是返回到在同一条链路上的任意一个界面- (NSArray *)popToViewController:(UIViewController *)viewController animated:(BOOL)animated; // Pops view controllers until the one specified is on top. Returns the popped controllers.//这个方法是返回到根视图- (NSArray *)popToRootViewControllerAnimated:(BOOL)animated; // Pops until there's only a single view controller left on the stack. Returns the popped controllers.

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