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[操作系统]多层导航栏下的登陆注销架构

1.在APPDelegate创建一个Nav,作为主Nav:

//.h@property (strong, nonatomic) LoginController *login_ctr;@property (strong, nonatomic) UINavigationController *login_nav;//.mself.login_ctr = [[LoginController alloc] init];self.login_nav = [[UINavigationController alloc] initWithRootViewController:self.login_ctr];self.window.rootViewController = self.login_nav;

2.在Login界面创建tab控制器,并添加各个子Nav:

HomeController *home_ctr = [[HomeController alloc] init];home_ctr.title = @"首页";UINavigationController *home_nav = [[UINavigationController alloc] initWithRootViewController:home_ctr];DeviceController *device_ctr = [[DeviceController alloc] init];device_ctr.title = @"设备列表";UINavigationController *device_nav = [[UINavigationController alloc] initWithRootViewController:device_ctr]; UITabBarController *rootTabbarCtr = [[UITabBarController alloc] init];NSArray *nav_views = @[home_nav,device_nav];[rootTabbarCtr setViewControllers:nav_views]; [self.navigationController pushViewController:rootTabbarCtr animated:YES];

 

3.在需要返回最上层Login界面时调用:

AppDelegate *app = (AppDelegate *)[[UIApplication sharedApplication] delegate];[app.login_nav popToRootViewControllerAnimated:YES];