uitabbar

iOS开发中标签控制器的使用——UITabBarController 一、引言 与导航控制器相类似，标签控制器也是用于管理视图控制器的一个UI控件，在其内部封装了一个标签栏，与导航不同的是，导航的管理方式是纵向的，采用push与pop切换控制器，标签的管理是横向的，通过标签的切换来改变控制器，一般我们习惯将tabBar作为应用程序的根视图控制器，在其中添加导航，导航中在对ViewController进行管理。 二、创建一个标签控制器 通过如下的步骤，我们可以很简便的创建一个TabBarController： UITabBarController * tabBar= [[UITabBarController alloc]init]; NSMutableArray * controllerArray = [[NSMutableArray alloc]init]; for (int i=0; i<4; i++) { UIViewController * con = [[UIViewController alloc]init]; [con loadViewIfNeeded]; con.view.backgroundColor = [UIColor colorWithRed:arc4random()%255/255.0 green:arc4random()%255/255.0 blue

I am creating an app in which I have five tabs. I need to reload each controller every time when tab is pressed. Put the code you want to reload, in the view will appear or in view did appear of all the view. All the best. Example: // AppDelegate ( and <UITabBarControllerDelegate> ) // Creation tabbar and controllers UIViewController* myController1 = [[UIViewController alloc] init] autorelease]; UINavigationController* nav1 = [[[UINavigationController alloc] initWithRootViewController:myController1] autorelease]; UIViewController* myController2 = [[UIViewController alloc] init] autorelease];

How does one do this? Note that I do not want a controller. Just a tab bar. UITabBar *aTabBar = [[UITabBar alloc] initWithFrame:aFrame]; You’ll probably need to refer to the class documentation for instance methods like -setItems:animated: . Also, see the UITabBarDelegate protocol. 来源： https://stackoverflow.com/questions/3221133/iphone-create-uitabbar-programmatically

I am new to iOS development and I have started with IOS 5 directly. I have created a storyboard which consists of a tabview controller as its rootviewcontroller. I have put 2 tabs to it. I want to deselect/unselect all the tabs initially. How do I do this? I have tried the following UIView *view = [[UIView alloc]initWithNibName:@"view" bundle:[NSBundle mainBundle]]; [self.tabBarController setSelectedViewController:nil]; [self.tabBarController setSelectedViewController:view]; where I have added a view with identifier "view". But this didn't work, it gives error: unrecognized selector sent to

I have a UITabBar but i don't want to set the images I just want to set the title, and I want this title to be aligned vertically. Is this possible? Thanks Not that I know of. I think you'd need to create images of your text labels (either in advance in your graphic tool of choice, or you can create them programmatically at runtime). If you want to do it programmatically, a method like the following might do it. It creates a center-aligned image using the text you pass it, performing word-wrap. UITabBarItem *item = [self.tabBar.items objectAtIndex:0]; item.image = [self makeThumbnailFromText:@

My tabbar consists only of text, no images. The problem is that the text always show on the bottom of the tab, is there a way to position the text in the middle ? Thank you Got it! [tab.tabBarItem setTitlePositionAdjustment:UIOffsetMake(0, -10)] A supplement, if you set multi viewControllers in tabBarController, you should use the following: for (UITabBarItem* item in tabBarController.tabBar.items) { [item setTitlePositionAdjustment:UIOffsetMake(0, -10)]; } swift update. func tabBarItem(title: String, imageName: String, selectedImageName: String, tagIndex: Int) -> UITabBarItem { let item =

The structure is the following: In my storyboard, I have a Tab Bar Controller which contains a Tab Bar object. This object has a custom class in which I have only this method: - (void)awakeFromNib { NSArray *imageNames = @[@"test1", @"test2", @"test3", @"test4", @"test5"]; for (int i=0; i<5; i++) { UITabBarItem *item = [self.items objectAtIndex:i]; NSString *imageName = [imageNames objectAtIndex:i]; item.image = [[UIImage imageNamed:imageName] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]; item.selectedImage = [UIImage imageNamed:[imageName stringByAppendingString:@"-selected"]];