iOS UINavigationController与UITabBarController的组合使用
2015-05-26 11:32
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1.导航类型
UINavigationController 适用于父子页面的跳转
UITabBarController 适用于平级页面的跳转
2.presentViewController / dismissViewControllerAnimated和pushViewController / popViewController
(1)只有从UINavigationController导航过来的UIViewController 才可以使用pushViewController / popViewController,从其它导航进入的只能使用presentViewController / dismissViewControllerAnimated
(2)如果A界面是通过presentViewController进入的,那么在A界面里只能使用presentViewController导航,如果A界面是通过UINavigationController包装了一层进入,则可使用pushViewController导航。
(3)如果A界面是一个UITabBarController,进入时是通过presentViewController来导航的,那么子Tab里也只能通过presentViewController来导航,如果进入时是通过UINavigationController包装了一层进入,则可使用[self.tabBarController.navigationController pushViewController:abcdViewController animated:true];这种方式导航。
3.修改UINavigationController导航进入后导航栏的图标及文字
UIBarButtonItem* leftBar = [[UIBarButtonItem alloc]initWithTitle:@"返回" style:UIBarButtonItemStylePlain target:self action:@selector(homeBack)];
self.navigationItem.leftBarButtonItem = leftBar;
//可添加多个导航按钮
// self.navigationItem.leftBarButtonItems = nil;
//同样右边的导航按钮也可以设置
4.创建UITabBarController时需注意,要先创建出来,然后通过UINavigationController包装后才能显示,否则tab子项不显示。创建格式如下
Java代码
![](https://oscdn.geek-share.com/Uploads/Images/Content/201505/f8cba321ae0070a70ce56a3a0e909adc.png)
TabOneViewController* oneVC = [[TabOneViewController alloc]init];
oneVC.view.backgroundColor = [UIColor whiteColor];
UITabBarItem* item1 = [[UITabBarItem alloc]initWithTitle:@"tab1" image:nil tag:0];
oneVC.tabBarItem = item1;
TabTwoViewController* twoVC = [[TabTwoViewController alloc]init];
UITabBarItem* item2 = [[UITabBarItem alloc]initWithTitle:@"tab2" image:nil tag:1];
twoVC.tabBarItem = item2;
HomeViewController* homeVC = [[HomeViewController alloc]init];
NSArray* array = [[NSArray alloc]initWithObjects:oneVC,twoVC, nil];
homeVC.viewControllers = array;
UINavigationController* navVC = [[UINavigationController alloc]initWithRootViewController:homeVC];
[self presentViewController:navVC animated:YES completion:^{}];
//下面这种创建了HomeViewController后,HomeViewController下的子Tab不能通过push或者pop导航
// HomeViewController* homeVC = [[HomeViewController alloc]init];
// [self presentViewController:homeVC animated:YES completion:^{}];
5.UITabBarController各页面之间的切换
实现UITabBarControllerDelegate协议
UINavigationController 适用于父子页面的跳转
UITabBarController 适用于平级页面的跳转
2.presentViewController / dismissViewControllerAnimated和pushViewController / popViewController
(1)只有从UINavigationController导航过来的UIViewController 才可以使用pushViewController / popViewController,从其它导航进入的只能使用presentViewController / dismissViewControllerAnimated
(2)如果A界面是通过presentViewController进入的,那么在A界面里只能使用presentViewController导航,如果A界面是通过UINavigationController包装了一层进入,则可使用pushViewController导航。
(3)如果A界面是一个UITabBarController,进入时是通过presentViewController来导航的,那么子Tab里也只能通过presentViewController来导航,如果进入时是通过UINavigationController包装了一层进入,则可使用[self.tabBarController.navigationController pushViewController:abcdViewController animated:true];这种方式导航。
3.修改UINavigationController导航进入后导航栏的图标及文字
UIBarButtonItem* leftBar = [[UIBarButtonItem alloc]initWithTitle:@"返回" style:UIBarButtonItemStylePlain target:self action:@selector(homeBack)];
self.navigationItem.leftBarButtonItem = leftBar;
//可添加多个导航按钮
// self.navigationItem.leftBarButtonItems = nil;
//同样右边的导航按钮也可以设置
4.创建UITabBarController时需注意,要先创建出来,然后通过UINavigationController包装后才能显示,否则tab子项不显示。创建格式如下
Java代码
![](https://oscdn.geek-share.com/Uploads/Images/Content/201505/f8cba321ae0070a70ce56a3a0e909adc.png)
TabOneViewController* oneVC = [[TabOneViewController alloc]init];
oneVC.view.backgroundColor = [UIColor whiteColor];
UITabBarItem* item1 = [[UITabBarItem alloc]initWithTitle:@"tab1" image:nil tag:0];
oneVC.tabBarItem = item1;
TabTwoViewController* twoVC = [[TabTwoViewController alloc]init];
UITabBarItem* item2 = [[UITabBarItem alloc]initWithTitle:@"tab2" image:nil tag:1];
twoVC.tabBarItem = item2;
HomeViewController* homeVC = [[HomeViewController alloc]init];
NSArray* array = [[NSArray alloc]initWithObjects:oneVC,twoVC, nil];
homeVC.viewControllers = array;
UINavigationController* navVC = [[UINavigationController alloc]initWithRootViewController:homeVC];
[self presentViewController:navVC animated:YES completion:^{}];
//下面这种创建了HomeViewController后,HomeViewController下的子Tab不能通过push或者pop导航
// HomeViewController* homeVC = [[HomeViewController alloc]init];
// [self presentViewController:homeVC animated:YES completion:^{}];
5.UITabBarController各页面之间的切换
实现UITabBarControllerDelegate协议
//实现协议方法,用于切换Tab时,更改页面的标题 -(void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController { NSInteger index = tabBarController.selectedIndex; NSString *title; switch (index) { case 0: title = @"Message"; break; case 1: title = @"User List"; break; } self.title
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