按钮单击时更改选定的TabBar索引 [英] Change the selected TabBar index on button click
本文介绍了按钮单击时更改选定的TabBar索引的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
在我的应用程序中,我有4个标签,在第一个标签上:我有4个视图。在第二个视图中,有一个按钮将打开第三个选项卡视图。但我选择的标签索引是一个。如何将其变为第三。
In my app I have 4 tabs, on the first Tab : I have 4 views. on second view,there is one button which will open the third tab view. But my selected tab Index is One. How can I chage it to Third.
标签栏的代码在APPDelegate中如下:
My code for tab bar is in APPDelegate as follow:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
UINavigationController *nav1 = [[UINavigationController alloc] init];
UIViewController *viewController1 = [[[CarAccidentAppViewController alloc]
initWithNibName:@"CarAccidentAppViewController_iPhone" bundle:nil]
autorelease];
nav1.viewControllers = [NSArray arrayWithObjects:viewController1, nil];
//for steps tab...
UINavigationController *nav2 = [[UINavigationController alloc] init];
UIViewController *viewController2 = [[[FirstSteps alloc] initWithNibName:@"FirstSteps" bundle:nil] autorelease];
nav2.viewControllers = [NSArray arrayWithObjects:viewController2, nil];
//for profiles tab...
UINavigationController *nav3 = [[UINavigationController alloc] init];
UIViewController *viewController3 = [[[Profiles alloc] initWithNibName:@"Profiles" bundle:nil] autorelease];
nav3.viewControllers = [NSArray arrayWithObjects:viewController3, nil];
//for contact us tab...
UINavigationController *nav4 = [[UINavigationController alloc] init];
UIViewController *viewController4 = [[[ContactUs alloc] initWithNibName:@"ContactUs" bundle:nil] autorelease];
nav4.viewControllers = [NSArray arrayWithObjects:viewController4, nil]; self.tabBarController = [[[UITabBarController alloc] init]
autorelease];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:nav1,nav2,nav3,nav4 ,nil];
self.window.rootViewController=self.tabBarController;
[self.window makeKeyAndVisible];
return YES;
}
推荐答案
最简单以编程方式切换应用程序中的选项卡的方法是这样做..
The simplest way to programatically switch tabs within the app is by doing this ..
[self.tabBarController setSelectedIndex:3];
我在我的某个应用程序中使用此功能,效果非常好。
I use this in one of my apps and it works extremely well.
等离子
这篇关于按钮单击时更改选定的TabBar索引的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文