Just as the title says, I have a UINavigationController nested in a UITabBarController. When the user taps on a table cell, I would like to push a view controller (which doesn't show the UITabBar). This is the behavior of the iPod app when you tap on "Now Playing."
How can this be done?
Just add this in the view controller you are pushing.
- (BOOL)hidesBottomBarWhenPushed {
return YES;
}
For example:
OrderViewController *controller = [[OrderViewController alloc] init];
controller.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[self presentModalViewController:controller animated:YES];
[controller release];
Or try to set property hidesBottomBarWhenPushed of self.tabBarController to YES.
Start with a UITabBarController project in Xcode, place a UINavigationController in each one of the tab view for the controller, and you're done! Hope that Helps!
I think hidesBottomBarWhenPushed is the way to go. There's some gotchas to keep in mind. Your setting this on the UIViewController that you're pushing, not on the tabBarController, or on the existing navigation controller.
Check here for more details: Setting hidesBottomBarWhenPushed leaves bottom bar missing after View Controller is popped
From that post, some sample code:
self.anotherViewController.hidesBottomBarWhenPushed = YES;
[self.navigationController pushViewController:self.anotherViewController animated:animated];
Related
I have a ViewBased App. I added a UITableView on one of the UIViewControllers. It shows the data and I implemented all the delegate methods etc. My problem is when I want to show the detailView it just doesn't happen. My code:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
DetailViewController *detailViewController =[[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:nil];
NSLog(#"DidSelectRowAtIndexPath");
// Pass the selected object to the new view controller.
[self.navigationController pushViewController:detailViewController animated:YES];
[detailViewController release];
}
I see that I need a navigationController but I don't have one and I was unsucessful trying to add one programatically. I don't have one in my appDelegate either, so my question is do I need to add one to show the detail view? If yes, please give me a code sample how to do that.
If not, what other way is there?
I am new to iOS so I am a bit lost here.
Please help!
To add a navigation controller programmatically just for this detail view, you need to something like this:
UINavigationController * controller = [[UINavigationController alloc] initWithRootViewController:detailViewController];
[[detailViewController] release];
[self presentModalViewController: controller animated: YES];
If you want to use pushViewController, you need to already have a navigation controller surrounding the view you're starting with.
You need to add the Navigation Controller FIRST, then your master table becomes the root view controller of the nav controller, then when you tap a row in the table, you push another view controller onto the nav stack.
How does your master table get into the app in the first place? If you're using a nib, it's super easy to just change out the view controller for a nav controller with the old view controller added as a child of the nav controller.
You can create one programmatically by working within your app delegate's application:didFinishLaunchingWithOptions: method like so:
UITableViewController *tableViewController = [[[WhateverYourSubclassVCIsCalled alloc] init] autorelease];
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:tableViewController];
window.rootViewController = navController;
[window makeKeyAndVisible];
In my application my first Page is a UITableviewController. Then I add a subView in UIViewcontroller like:
viewcontrollername * prod=[[viewcontrollername alloc]init];
[self.view addSubview:prod.view];
It's fine, but My problem is in UINavigation controller not working in viewcontroller page(doesn't Navigate to another Page). I have implemented it in click event:
prod *login=[[prod alloc]init];
UINavigationController *navCtrl= [[UINavigationController alloc] init];
[navCtrl pushViewController:login animated:YES];
[login release];
And
prod *login=[[prod alloc]init];
[self.navigationController pushViewController:login animated:YES];
[login release];
But it doesn't Navigate to another Page.
Use this code when you init the navigation controller :
UINavigationController *navigationCtrlSlideShowSetting = [[UINavigationController alloc] initWithRootViewController:yourviewcontroller];
Thanks
It looks like navCtrl hasn't been added to the view hierarchy. Either you add it as a subview to the window or make it the rootViewController.
Your first view controller should be the root view controller of the navigation controller.
initWithRootViewController
Alternatively you can add the newly created navigation controller to your viewcontroller.
[self.view addSubview:navCtrl.view];
Once this is done you can push view controllers to the navigation controller.
EDIT:
You need to have a back button in case you do not have a way to come back to main screen. The better option is to use navigation controller for the main screen and go on pushing views onto the stack.
I am showing a modal view which is a UITableViewController class. For some reason it won't show the navigation bar when I show it. Here is my code:
SettingsCreateAccount *detailViewController = [[SettingsCreateAccount alloc] initWithStyle:UITableViewStyleGrouped];
detailViewController.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
detailViewController.navigationController.navigationBarHidden = NO;
[self.navigationController presentModalViewController:detailViewController animated:YES];
detailViewController = nil;
[detailViewController release];
I thought it was shown by default? If it helps, I am calling this from another class that is also a UITableViewController managed by a UINavigationController. Ideas?
When you present a modal view controller it does not use any existing navigation controllers or navigation bars. If all you want is to display a navigation bar, you need to add the navigation bar as a subview of your modal view and present it as you're doing.
If you want to present a modal view controller with navigation functionality, you need to present a modal navigation controller containing your detail view controller instead, like so:
SettingsCreateAccount *detailViewController = [[SettingsCreateAccount alloc] initWithStyle:UITableViewStyleGrouped];
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:detailViewController];
[detailViewController release];
navController.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
[self presentModalViewController:navController animated:YES];
[navController release];
Your modal controller will manage its own navigation stack.
Here is one way to display navigation bar for those who are using storyboards, suggested by Apple's Tutorial on Storyboard.
Because a modal view controller doesn’t get added to the navigation stack, it doesn’t get a navigation bar from the table view controller’s navigation controller. To give the view controller a navigation bar when presented modally, embed it in its own navigation controller.
In the outline view, select View Controller.
With the view controller selected, choose Editor > Embed In > Navigation Controller.
On iOS 7 and you just want a navigation bar on your modal view controller to show a title and some buttons? Try this magic in your UITableViewController:
// in the .h
#property (strong) UINavigationBar* navigationBar;
//in the .m
- (void)viewDidLoad {
[super viewDidLoad];
self.navigationItem.title = #"Awesome";
self.navigationBar = [[UINavigationBar alloc] initWithFrame:CGRectZero];
[self.view addSubview:_navigationBar];
[self.navigationBar pushNavigationItem:self.navigationItem animated:NO];
}
-(void)layoutNavigationBar{
self.navigationBar.frame = CGRectMake(0, self.tableView.contentOffset.y, self.tableView.frame.size.width, self.topLayoutGuide.length + 44);
self.tableView.contentInset = UIEdgeInsetsMake(self.navigationBar.frame.size.height, 0, 0, 0);
}
-(void)scrollViewDidScroll:(UIScrollView *)scrollView{
//no need to call super
[self layoutNavigationBar];
}
-(void)viewDidLayoutSubviews{
[super viewDidLayoutSubviews];
[self layoutNavigationBar];
}
I want to share how the accepted solution can be used in projects with storyboards:
The simple approach is to put in a storyboard blank navigation controller before the VC which is to be presented modally, so the relations look like:
(Presenter VC) -> presents modally -> (navigation controller having a controller to be presented as its root).
We've tried this approach for a while and noticed that our storyboards become "polluted" by a large number of such intermediate navigation controllers when each! of them is used exclusively for one! presentation of some other controller, that we want to be presented modally with navigation bar.
Our current solution is to encapsulate the code from accepted answer to a custom segue:
#import "ModalPresentationWithNavigationBarSegue.h"
#implementation ModalPresentationWithNavigationBarSegue
- (void)perform {
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:self.destinationViewController];
[self.sourceViewController presentViewController:navigationController animated:YES completion:nil];
}
#end
Having this segue in our project we do not create intermediate navigation controllers in our storyboards anymore, we just use this ModalPresentationWithNavigationBarSegue like:
Presenter VC --> Presentee VC
I hope that this answer will be helpful to people who like to avoid unnecessary duplication in their apps storyboards.
I just wanted to add something to what #Scott said. His answer is definitely the easiest and most accepted way of doing it now with Storyboards, iOS 7 and 8... (and soon, 9).
Definitely adding a view controller to the Storyboard and Embedding it as described by #Scott is the right way to go.
Then, just add the segue by control-dragging from the source view controller to the target (the one you want to show modally), select "Present Modally" when the little view appears with the choices for the type of segue. Probably good to give it a name too (in the example below I use "presentMyModalViewController").
One thing that I needed that was missing is #Scott's case is when you want to actually pass on some data to that modally-presented view controller that is embedded in the navigation controller.
If you grab the segue.destinationViewController, it will be a UINavigationController, not the controller you embedded in the UINavigationController.
So, to get at the embedded view controller inside the navigation controller, here's what I did:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"presentMyModalViewController"]) {
// This could be collapsed, but it's a little easier to see
// what's going on written out this way.
// First get the destination view controller, which will be a UINavigationController
UINavigationController *nvc = (UINavigationController *)segue.destinationViewController;
// To get the view controller we're interested in, grab the navigation controller's "topViewController" property
MyModalViewController *vc = (EmailReceiptViewController *)[nvc topViewController];
// Now that we have the reference to our view controller, we can set its properties here:
vc.myAwesomeProperty = #"awesome!";
}
}
Hope this helps!
If you only need a NavigationBar, you can add an instance of UINavigationBar and assign BarItems to it.
In my application the modal navigationcontroller that I am presenting is going under the current navigationcontroller so I'm not able to view the new navigationbar as it's disappearing under the current one.
I'm presenting the modalview on self and not self.navigationcontroller because self.navigationcontroller doesn't present the modalviewcontroller.
Also how to push a view on this modal navigationcontroller?
I'm using following code in one of my viewControllers:
fullListTopCompanies *fullListTopCompaniesInstance = [[fullListTopCompanies alloc] initWithNibName:#"fullListTopCompanies" bundle:nil];
UINavigationController *navigationController = [[UINavigationController alloc]
initWithRootViewController:fullListTopCompaniesInstance];
fullListTopCompaniesInstance.navigationController.navigationItem.title = #"F";
[self presentModalViewController:navigationController animated:YES];
[navigationController release];
[fullListTopCompaniesInstance release];
Can anybody please help?
Thanx in advance.
use animated with transition
according to me you have to change the animation style
i done it before but forgot the code i will post it when i get it
self.navigationController.navigationItem.title = #"F";
Add the above line of code in viewDidLoad method of "fullListTopCompanies" class.
Actually your navigation bar hides because of the modal view and modal view by default doesnt have Navigation bar.To add a navigation bar to modal view you can try the below code:
In Header File
IBOutlet fullListTopCompanies *fullListTopCompaniesInstance;
In Implementation File
UINavigationController *nav = [[UINavigationController alloc] initWithNibName:#"fullListTopCompanies" bundle:nil];
[self presentModalViewController:nav animated:YES];
[nav release];
Also on the "fullListTopCompanies" View Controller dont forget to put a left navigation bar button item for dismissing the modal view.
So add that left bar button (Ideally Cancel Button on navigation bar) and event handler for that left barr button should contain the code
[self dismissModalViewControllerAnimated:YES];
Hope this helps.
I am creating a Navigation based iPhone application.
In that I have called a UiViewController using presentModalViewController. After that, the ViewController becomes visible. From that ViewController I need to call another ViewController using the sample presentModalViewController. Is this possible or not?
What do you mean by "call another uiviewcontroller"? (It really helps if you can be more detailed in your question.) If you mean, "slide in another view controller", then:
MyNewViewController *myNewViewController = [[MyNewViewController alloc] initWithNibName:#"MyNewViewController" bundle:nil];
[navigationController pushViewController:myNewViewController animated:YES];
[myNewViewController release];
...where:
MyNewViewController is the new view controller class that you want to slide in (the above code assumes you have an XIB file for the view controller class).
navigationController points to the current navigation controller. You'll have to replace it with something like [self navigationController], depending where you are in the view hierarchy.
U might be using following line to present a view controller.
//assume name of viewController which u want to present is "myViewController"
[self.navigationController presentModalViewController:myViewController animated:YES]
If you want to push an other ViewController or present an other ViewController then u will need to replace above line with following lines.
//[self.navigationController presentModalViewController:myViewController animated:YES];
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:myViewController];
navigationController.navigationBarHidden = YES; //if u want to show navigation bar then remove this line
[self presentModalViewController:navigationController animated:YES];
After using above code you can present or push other view controllers within presented view controller.
Hope it will solve your problem :)