In my iPhone application I am using UITabbarController + UINavigationController, created in appDelegate.
My issue is as follows:
On screen- I have tableview. When one selects cell I am pushing the controller to screen-B. Now without poping it if I select another tab from tabbar, then view gets refreshed but navigationbar is not getting refreshed. It displays navigationbar of screen-Bscreen-B.
Used below code but nothing seems to solve my issue:
- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController
{
if ([viewController isKindOfClass:[UINavigationController class]])
{
[viewController.navigationController popToRootViewControllerAnimated:NO];
}
}
try this in appdelegate
UINavigationController *screen1=[[UINavigationController alloc] initWithRootViewController:controller1];
UINavigationController *Bscreen=[[UINavigationController alloc] initWithRootViewController:controller2];
NSArray *tabbararray=[[NSArray alloc] initWithObjects: screen1,Bscreen,nil];
self.TabControllerObj.viewControllers=allviewcontrollers;
and make tabbar as root viewcontroller of your window
Related
Let me explain clearly.
I have a tabbarcontoller in the viewcontroller which is the main view controller of the single view application project.
I added a tabbarcontroller to the viewcontroller as the subview. In the tabbarcontroller, I added two navigation controllers like below image,
I have added three(named First, Second, Third) more viewcontrollers as new file.
If I navigate from one viewcontroller to other in a tab using below,
third = [[Third alloc] initWithNibName:#"Third" bundle:[NSBundle mainBundle]];
[self.navigationController pushViewController:third animated:YES];
If I switch to next tab and come back to the previous tab, it should popto the previous view controller, how to do this?
I tried
- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController
{
[self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:0] animated:YES];
}
not succeed,
I also tried,
[third popto];
In the third viewcontroller,
-(void)popto
{
[self.navigationController popViewControllerAnimated:YES];
}
nothing happened.
Now, I have to click the tab again to poptoviewcontroller to the first viewcontroller.
Any ideas will be highly appreciated.
You should try using
[viewController.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:0] animated:YES];
instead of
[self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:0] animated:YES];
Try the below code snippet
-(BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController
{
UINavigationController *navController = (UINavigationController*)viewController;
if (navController && ([[navController viewControllers] count] > 0))
{
[navController popToRootViewControllerAnimated:NO];
}
return YES;
}
Hope it may work for you.
How about overriding UITabbarController for a custom one and implement the following method:
- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController;
Next loop trough all the 'viewcontrollers' of the tabbar (in this case the navigation controllers) and call on all the navigation controllers popToRootViewController.
This might work.
I am working on an application where I have a UINavigationController embedded inside a UITabBarController. The UINavigationController has a UITableView that transitions to a DetailController when a cell is tapped.
My question is: I select a cell on [TAB1] and transition to the DetailController. If I select [TAB2] and then go back to [TAB1] its still on the detail controller. Is there anyway when [TAB2] is selected that I can unwind/dismiss the DetailController on [TAB1] (i.e. so its showing the table view cells again).
My other line of thinking is that doing this would not leave the UI in the state the user left it in, i.e. after viewing the DetailController and pressing [TAB2] returning to [TAB1] would present the user with the cells in the UITableView. It feels better for the application to revert the DetailController if you leave the TAB, which is why I am asking...
NB: I present the *DetailController* via a push segue from theUITableViewCell.
You can implement UITabBarControlleDelegate and go back to root view of UINavigationController using popToRootViewControllerAnimated: when tab is changed.
Code example:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
UITabBarController *tabBarController = (UITabBarController *)self.window.rootViewController;
tabBarController.delegate = self;
return YES;
}
- (BOOL)tabBarController:(UITabBarController *)tabBarController
shouldSelectViewController:(UIViewController *)viewController
{
UIViewController *currentController = tabBarController.selectedViewController;
if ([currentController isKindOfClass:[UINavigationController class]])
[(UINavigationController *)currentController popToRootViewControllerAnimated:NO];
return YES;
}
I added this tab bar in view controller 1 and it works perfectly, the only issue is I want it to do the following function [self.navigationController popViewControllerAnimated:YES];, but in view controller2 when the tab bar button is touched. What would be the best course of action?
UINavigationController *homeNavigationController = [[UINavigationController alloc] initWithRootViewController:homeViewController];
homeNavigationController.tabBarItem = [[DSTabBarItem alloc] initWithFinishedSelectedImage:[UIImage imageNamed:#"home"]
finishedUnselectedImage:[UIImage imageNamed:#"home1"]
iconSize:CGSizeMake(76, 59)
tag:0];
[tabBarViewControllers addObject:homeNavigationController];
If you added tabbarcontroller programmatically . And In that class add the following method.
Then you navigation controller will changed to root view. And you can place your own between the if to your requirement.
- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController
{
if ([self.tabBarController.selectedViewController isKindOfClass:[UINavigationController class]])
{
[(UINavigationController*)self.tabBarController.selectedViewController popToRootViewControllerAnimated:YES];
}
}
DetailSettingsViewController *settings = [[DetailSettingsViewController alloc] initWithNibName:#"DetailSettingsViewController" bundle:nil];
[self.navigationController pushViewController:settings animated:YES];
I want navigate to Rootview of 1st Tabbar item by clicking a button on fourth tabbar using this code just changes the Tabbar selection
code snippets
[self.parentViewController.tabBarController setSelectedIndex:0];
Previous action to be appear in the home view controller .
i need Direct navigation of Home view controller in main page
How to resolve in this issue?
Thanks in advance
First get your UINavigationController of the first tabbar item.
UINavigationController *navController = [self.tabBarController.viewControllers objectAtIndex:0];
And then navigate to root view controller.
navController popToRootViewControllerAnimated:NO];
That's all. :)
You have to pop the selected tab bar navigation stack to root.. You can achieve this by several method one is as below..
In your AppDelegate implement the tabbarcontroller delegate function, make sure you have set the tabbarcontroller delegate to AppDelegate..
-(void) tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController
//Check the selected index to 0
if ([viewController isKindOfClass:[UINavigationController class]] && tabBarController.selectedIndex == 0) {
[(UINavigationController *)viewController popToRootViewControllerAnimated:NO];
}
}
For the impatient:
I want to have a navigationcontroller who's root viewcontroller is a tabbarcontroller, similar to the iPad application. I am using IOS 5 and Storyboards.
For the reading inclined:
In my storyboard I have 6 tabs in a UITabBarController that is embeded in a UINavigationController, giving it a "More" button after 3 tabs are shown.
doing so gives me two navigation bars when more is pressed:
So I subclass TabBarController:
//#implentation MyTabController
- (void)viewDidLoad
{
self.moreNavigationController.wantsFullScreenLayout = NO;
self.delegate = self;
}
- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController
{
// hide nav bar if current controller is "More" controller
self.navigationController.navigationBarHidden =
viewController == self.moreNavigationController;
}
Great, this gives me:
My guess was that i needed to relayout the views to account for the statusbar, so i try
[self.view setNeedsLayout:YES];
but i get an error saying UIView does not contain a selector for setNeedsLayout so...
How do I get the moreNavigationController.navigationBar to account for the statusbar?
Update:
I have a second related issue with this. When I hit the "Edit" button the edit controller shows modally. Its navigationbar displays underneath the insured controller (after an animation), and does not receive touches.
Pushing a tabBarController into a NavController isn't recommended, instead set a NavigatorController for every tabBar View controller, and set the TabBarController as the main window root view controller.
If you want to be able to show a screen before showing the tabbar, a solution is to push in all the navigator controllers the previous view controller, followed by the one you want to show (that way all navbars has the backbutton). Then set hidesBottomBarWhenPushed = YES to the first view controller, that way it won't show the tabBar.
Example Code:
UIViewController *prevc = [[UIViewController alloc] init];
//prevc.hidesBottomBarWhenPushed = YES;
//Do this for every VC that will be a tabBarItem
UIViewController *vc1 = [[UIViewController alloc] init];
UINavigationController *nv1 = [[UINavigationController alloc] initWithRootViewController:prevc];
[nv1 pushViewController:vc1 animated:NO];
//Remember to set the tabBarItem!
UITabBarController *tb = [[UITabBarController alloc] init];
tb.viewControllers = [NSArray arrayWithObjects:nv1, nv2, nv3, nil];
I just realized that setting hidesBottomBarWhenPushed to the previous ViewController won't work well, but If you show prevc first, and then push the following viewController, you won't have problems. But if anyway you wan't to hide the tab bar while doing a pop, please check this:
hidesBottomBarWhenPushed but when popped
I have also faced a similar problem. In my application also, there is a Tabarcontroller inside a Navigation controller. When i try to switch to a view controller in more navigation controller programatically (like : [self.tabBarController setSelectedIndex:X]; ) the same issues appears in my application. But the following code solves my problem.
self.tabBarController.moreNavigationController.navigationBarHidden = YES;