i have a UInavigationController nested in uitabbar and i need to push a particular view ( the second element of tabbar, index:1). (I use storyboard)
I've already tried:
UITabBarItem *tabBarItem1 = [tabBarGlobal.items objectAtIndex:1];
[tabBarGlobl setSelectedItem:tabBarItem1];
And for setup appearance i've used:
[self tabBar:self.tabBar didSelectItem:tabBarItem1];
The appearance is good but in the tabbar the element selected is the first and not the second.
tabBarGlobal is connected with the view in Storyboard:
#property (strong, nonatomic) IBOutlet UITabBar *tabBarGlobale;
Any Idea?
Thank's.
If you're not using your UITabBar with an UITabBarController, you should read this post first.
And then, you have to set this UITabBarController property:
#property(nonatomic) NSUInteger selectedIndex
See here
Related
I used a UIview controller for my app home page and then added a tab bar at the bottom just like Facebook and then added 3 more tab bar item, it doesn't let me perform a segue when drag the tab bar item to a View Controller, is it possible progmatically or in storyboard?
I had the same problem, but i couldn't find a way to assign to a viewController its own viewControllers as in the TabViewController case.
I solved it using containers. One container for each tabBarItem in your tabBar, which are hidden or showed depending of the selected tabBarItem in the tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem *)item method.
1. Create your containers in your UIviewController in storyBoard: Just like this Select your tabBar and Ctrl+Drag to delegate the class for listen the tabBarDelegate methods: look here
2. Declare the corrisponging IBOutlets, incliding your tabBAr:
#import <UIKit/UIKit.h>
#interface TabsMainViewController : UIViewController
#property (strong, nonatomic) IBOutlet UITabBar *tabBar;
#property (strong, nonatomic) IBOutlet UIView *directoryContainer;
#property (strong, nonatomic) IBOutlet UIView *groupsContainer;
#end
3. Select the container to show in the tabBarDelegate method:
-(void)tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem *)item {
switch (item.tag) {
case 1:
_directoryContainer.hidden = NO;
_groupsContainer.hidden = YES;
break;
case 2:
_directoryContainer.hidden = YES;
_groupsContainer.hidden = NO;
break;
default:
break;
}
}
Hope that helps!
Simple: You need a UITabViewController, tab bar items can't be used the way you're asking for.
Ctrl+drag from your tabview controller to a view you'd like to include (Third in this case)
You then select the view controllers option to add the relationship segue.
I have a view with 3 buttons and a tabbar controller that contains 3 views. I am using the storyboard. I want go from my view to a specific view from the tabbar controller. When I create a segway to the destination view, the tabbar is not included.
The only way I find out is to create a segway to the tabbar controller itself, but then by default the first view is been shown.
Thanks in advance!
Yess!! I got the solution. Do the following:
In you're .h file:
#property (strong, nonatomic) UITabBarController *tabController;
In you're .m file:
#synthesize tabController;
tabController = [self.storyboard instantiateViewControllerWithIdentifier:#"tabbar"];
The selected index is the tab you want to go
tabController.selectedIndex = 1;
[[self navigationController] pushViewController:tabController animated:YES];
I presented a View using a call to presentModalViewController.
My new View didn't have a navigation bar, so I added one from the Library but now when I created a UIBarButtonItem in viewDidLoad of my controller, and set it to rightBarButtonItem of the navigationBarItem.
But when I run my app, the Navigation bar is there but there is no button.
Did I miss a step or something ?
Just adding a navigation bar manually will not make the self.navigationController property actual and it's value is nil, which, I believe, you're using for adding a UIBarButtonItem instance.
What I'd recommend is to declare a UINavigationBar IBOutlet in your controller, connect it in NIB editor with navigation bar you've added and after that in viewDidLoad use something like:
#interface ...
#property (nonatomic, retain) IBOutlet UINavigationBar *theBar;
#end
#implementation ...
#synthesize theBar;
-(void)viewDidLoad {
[super viewDidLoad];
UIBarButtonItem *yourButton = ...;
UINavigationItem *item = [[UINavigationItem alloc] initWithTitle:#"MyTitle"];
item.rightBarButtonItem = yourButton;
[theBar pushNavigationItem: item animated:NO];
[item release];
...
}
#end
I thought
navigationBarItem property of UIViewController is work only if your ViewController is present with UINavigationController
if you add a navigation bar with interface builder
or add it with code ,then you need to use
- (void)pushNavigationItem:(UINavigationItem *)item animated:(BOOL)animated
to add UINavigationItem yourself
you can create a UINavigationController
use - (id)initWithRootViewController:(UIViewController *)yourViewController
and use presentModalViewController to show UINavigationController that you create
then you can use navigationBarItem property of UIViewController to set rightBarButtonItem in viewDidLoad
Actually it is easier than this:
Drag a UINavigationBar into your app. Note that you will also get a UINavigationItem when you do this... make sure you keep it.
Add the following property to your app:
#property (weak, nonatomic) IBOutlet UINavigationItem *navigationItem;
Xcode will likely indicate an error (you are overriding a built in property of UIViewController), so you have to manually synthesize the getter and setter. Add the following line below the #implementation statement for the class:
#synthesize navigationItem;
In Interface Builder, drag a connection from the new navigationItem property to your custom navigation item.
You can now access your navigation item using self.navigationItem, just like you would normally.
I currently have a view set up as the following:
#interface BlogViewController : UIViewController <UITableViewDelegate, UITableViewDataSource> {
UITableView *mainTableView;
}
#property (nonatomic, retain) UITableView *mainTableView;
As you can see, it has a UITableView inside of it that I load all of my data to. However, when I call the following function:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
SingleBlogViewController *viewController = [[SingleBlogViewController alloc] init];
[self.navigationController pushViewController:viewController animated:YES];
//[self presentModalViewController:viewController animated:YES];
[viewController release];
}
nothing happens. For some reason my UITableView inside of my UIViewController isn't pushing the view. Is this because it isn't a UITableViewController? I tried changing it to that, and it still didn't work.
Am I missing something here?
I found the first parts of this blog post useful for showing how to create and use a UINavigationController programmatically without Interface Builder.
Some of the things I wish the docs and tutorials would have stressed to me:
When you create the UINavigationController you get a UIView and UINavigationBar for free (i.e. you don't need to separately add them and figure out how to hook them together).
You add the myUINavigationController.view property as the "main" view and then push/pop UIViewControllers onto the UINavigationController and they will automatically show up as visible in the myUINavigationController.view UIView.
When you push a UIViewController onto a UINavigationController, the UIViewController.navigationController is filled in. If you haven't pushed the view onto the navigation controller, I'm guessing that property is empty.
The time/place to programmatically add buttons to the UINavigationBar is not when and where you construct the UINavigationController, but rather by the individual UIViewControllers when they are loaded as you push onto the UINavigationController.
I only had to add a "Done" button to the UINavigationController's UINavigationBar in the viewDidLoad method of the first UIViewController pushed onto the UINavigationController. Any UIViewController I pushed on top of that first view automatically had a "back" button in the to navigate to the covered up UIViewController.
If you set the title property of your UIViewController before you put it on the UINavigationController's stack. The UINavigationBars title will be the title of your view. As well any "back" buttons will automatically name the view you are returning to instead of generically saying "back".
Please visit "How to add UINavigationController Programmatically"
Please visit above link & get all information regarding UINavigationController.
UINavigationController is a subclass of UIViewController, but unlike UIViewController it’s not usually meant for you to subclass. This is because navigation controller itself is rarely customized beyond the visuals of the nav bar. An instance of UINavigationController can be created either in code or in an XIB file with relative ease.
I'm using this method http://redartisan.com/2010/6/27/uisegmented-control-view-switching-revisited to create a custom UITabBar and loading a particular view when a certain TabBarItem is clicked.
The problem is that initially the first view is loaded, but the first tab bar item is not highlighted. Is there a way to force the highlight? I'm not using the tabbarcontroller so I can't use its methods.
If you make an instance variable: UITabBar *tabBar;
a property:
#property (nonatomic, assign) IBOutlet UITabBar *tabBar;
and connect this property to the UITabBar in Interface Builder, you can use:
for(UITabBarItem *tab in tabBar.items) {
if ([tab.title isEqualToString: #"My Tab Title"]) {
tabBar.selectedItem = tab;
}
}
This works if all tabs have a unique title, which is normally the case.