I'm creating an App for Ipad, I created 3 views with a navigation bar but I would to start my application not in first but in second view, what can i do?
You can setup UINavigationController with an initial navigation stack via setViewControllers:animated:.
// in application:didFinishLaunchingWithOptions:
self.navigationController = [[UINavigationController new] autorelease];
UIViewController *first = [[MyFirstViewController new] autorelease];
UIViewController *second = [[MySecondViewController new] autorelease];
NSArray *controllers = [NSArray arrayWithObjects:first, second, nil];
[navigationController setViewControllers:controllers animated:NO];
...
[window addSubview:navigationController.view];
Initialise your navigation controller on startup programmatically with 2 controllers already in stack:
FirstViewController *first = ...//create controller
SecondViewController *second = ...//create controller
[navigationController setViewControllers:[NSArray arrayWithObjects:first, second, nil]
animated:NO];
Or alternatively you can make your 1st controller push the second one on startup - see Apple's DrillDownSave sample for that technique.
Follow somesteps as:
1.open the MainWindow.xib in resource folder or bundle.
2.click on Tool and open Inspector >> choose attribute >> NIB Name-set here your view name from drop down list >> identity in inspector(from upper tabs) >> choose class -set here your view name again from drop down list.
3.Open appdelegate.m file
change here the view controller as : fileviewcontrollername *viewController;
set it's property.
4.in didFinishLaunching in appdelegate.m add
UINavigationController *navController=[[UINavigationController alloc]initWithRootViewController:viewController];[window insertSubview:navController.view];[self.window makeKeyAndVisible];return YES;
5.In appdelegate.h file add
#class viewControllername;
Related
I have clean first page without UITabBarController , and UINavigationController is hidden , so when user went to second page , it will need UITabBarController with few tabs , so my question is how can i build a UITabBarController without make it rootViewController ..
in AppDelegate.m
MainViewController *mainviewController = [[MainViewController alloc] init];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:mainviewController];
[nav setNavigationBarHidden:YES];
self.window.rootViewController = nav;
in MainViewController.m after button get clicked
ShowViewController *showView = [ShowViewController new];
[self.navigationController pushViewController:showView animated:YES];
in ShowViewController.m
UIViewController *tm1 = [UIViewController new];
tm1.title = #"tm1";
tm1.view.backgroundColor = [UIColor redColor];
UIViewController *tm2 = [UIViewController new];
tm2.title = #"tm2";
UIViewController *tm3 = [UIViewController new];
tm3.title = #"tm3";
NSArray *tm = #[tm1,tm2,tm3];
UITabBarController *tabbarC = [UITabBarController new];
[tabbarC setViewControllers:tm animated:YES];
[[self navigationController] pushViewController:tabbarC animated:YES];
tabbarC didn't show .. xcode said : 2014-02-03 01:07:48.205 zhui002[45992:70b] Finishing up a navigation transition in an unexpected state. Navigation Bar subview tree might get corrupted.
2014-02-03 01:07:48.355 zhui002[45992:70b] Unbalanced calls to begin/end appearance transitions for .
so could anyone tell me is that possible to use UITabBarController to build what i want , or i should build it with UIButton and make it looks like tabbar ?
thx !
The error Xcode is throwing most likely means you are trying to begin an animation before the previous animation has completed. You could try setting the animation property to NO in both the pushViewController calls to avoid getting the error.
A more elegant way to do what you are trying to do is make the ShowViewController a subclass of UITabBarController and set your tabs in viewDidLoad
The answer is yes you can. Hook up your TabBarController as a segue for 2nd ViewController. It will still be a part of the navigation controller.
current version of my project :
I have 5 different UIViewControllers in my app. I've set my
FirstViewController to be the Initial View Controller using the
Attributes Inspector. I move back and forth from one ViewController to
another by using buttons to which I assign modal segues, from one
ViewController to another, using the StoryBoard
What I want to change:
I want to keep the navigation buttons obviously, delete the modal segues and use
a UINavigationController instead. If I understand the concept
correctly, when using a UINavigationController I need to go into each
UIButton-IBAction and at the very end of the method I have to push the next
ViewController I want to move to, onto my NavigationController (do I also
have to pop the current one first?). However, I can't figure out how
to implement all that correctly.
What I've done so far:
I removed all modal segues from the storyboard and kept the navigation buttons along with their corresponding IBActions
I unchecked the box in the Attributes Inspector that was making my FirstViewController the initial View Controller of my app
I went into my AppDelegate.m and tried to create the Navigation Controller there and make my FirstViewController be the RootViewController
MyAppDelegate.m
-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
UIViewController *myFirstViewController = [[FirstViewController alloc] init];
UINavigationController *myNavigationController = [[UINavigationController alloc] initWithRootViewController:myFirstViewController];
[myNavigationController pushViewController:myFirstViewController animated:YES];
// Override point for customization after application launch.
return YES;
}
I then tried to test if the above was working by going into the IBAction of a
navigation button on my FirstViewController and implemented the
following in order to move to my SecondViewController when the
button is pressed :
FirstViewController.m
- (IBAction)goRightButton:(UIButton *)sender
{
// some code drawing the ButtonIsPressed UIImageView on the current View Controller
UIViewController *mySecondViewController = [[SecondViewController alloc] init];
[self.navigationController pushViewController:mySecondViewController animated:YES];
}
but nothing happens. What am I doing wrong ?
You are not linking your XIB file. Please add your navigation controller as
UIViewController *myFirstViewController = [[FirstViewController alloc] initWithNibName:#"FirstViewController" bundle:nil];
navigationController = [[UINavigationController alloc] initWithRootViewController:myFirstViewController];
Use following code to move from one view to another
UIViewController *mySecondViewController = [[SecondViewController alloc] initWithNibName:#"SecondViewController" bundle:nil];
[self.navigationController pushViewController:mySecondViewController animated:YES];
If you are using a storyboard, you should just drag in the navigation controller there and hook it up to your app delegates. As long as it is the main storyboard, and you have identified a view controller to load first, you do not need to load any views in your app delegate.
In order to push a view programmatically that's in a storyboard, you need to do something like the following:
//bundle can be nil if in main bundle, which is default
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil];
MyCustomViewController *customVC = (MyCustomViewController *)[mainStoryboard instantiateViewControllerWithIdentifier:#"customVC"];
//standard way
[self.navigationController pushViewController:customVC animated:YES];
//custom animation
[UIView transitionWithView:self.navigationController.view duration:0.5 options:UIViewAnimationOptionTransitionCurlUp animations:^{
[self.navigationController pushViewController:customVC animated:NO];
} completion:nil];
You identify the view controller with the identifier you add in the storyboard editor. Below are some screenshots to help show what I mean.
I have 6 views in which I am placing the UISplitViewController at 4th position (i.e.the 4th view). Now when I navigate from 3rd view to 4th view (i.e. ViewController to SplitView) I want to come back to 4th view to 3rd view (i.e. SplitView to ViewController).
I am using the below code to show the UISplitViewController when I am navigating from 3rd view to 4th view.
MasterViewController *masterViewController = [[MasterViewController alloc] initWithNibName:#"MasterViewController" bundle:nil];
UINavigationController *masterNavigationController = [[UINavigationController alloc] initWithRootViewController:masterViewController];
DetailViewController *detailViewController = [[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:nil];
UINavigationController *detailNavigationController = [[UINavigationController alloc] initWithRootViewController:detailViewController];
masterViewController.detailViewController = detailViewController;
self.splitViewController = [[UISplitViewController alloc] init];
self.splitViewController.delegate = detailViewController;
self.splitViewController.viewControllers = [NSArray arrayWithObjects:masterNavigationController, detailNavigationController, nil];
AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication]delegate];
appDelegate.window.rootViewController = self.splitViewController;
Now I have created a toolbar in my navigation bar programmatically and placed a back button. Below is the code what I have tried to pop the view back to viewcontroller. (i.e. from SplitView to ViewController).
-(IBAction)backbtn:(UIBarButtonItem *)sender
{
// RepresentativeAccount<UISplitViewControllerDelegate> *represent = [[RepresentativeAccount alloc]initWithNibName:#"RepresentativeAccount" bundle:nil];
// //[self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:2] animated:YES];
// [[self.splitViewController.viewControllers objectAtIndex:0]popToViewController:represent animated:YES];
}
Please help thanks.
Reference: View Controller Catalog for iOS
A split view controller must always be the root of any interface you
create.
In other words, you must always install the view from a UISplitViewController object as the root view of your application’s window.
The panes of your split view interface may then contain navigation
controllers, tab bar controllers, or any other type of view controller
you need to implement your interface.
Split view controllers cannot be presented modally.
So, what you are attempting is incorrect, and in fact your app may get rejected by Apple.
I am wondering if there is a way to add an additional UITabBarItem to my exisiting UITabBarController. It doesn't need to be in runtime.
All I want to do is when hitting this button I want to presentModalViewController: over my actually visible ViewController, which should either be the TabBarController or its controllers.
Hopefully this is clear enough, if not, feel free to ask.
As a result of my research you cannot add a UITabBarItem to a UITabBar that is managed by a UITabBarController.
Since you maybe have added your UITabBarItem by adding a list of view controller, this is also the way of your choice to add further custom UITabBarItems, as i will show now:
Pre-Conditions:
As i mentioned before, you maybe have added your UITabBarItems by adding a list of view controller:
tabbarController = [[UITabBarController alloc] init]; // tabbarController has to be defined in your header file
FirstViewController *vc1 = [[FirstViewController alloc] initWithNibName:#"FirstViewController" bundle:[NSBundle mainBundle]];
vc1.tabBarItem.title = #"First View Controller"; // Let the controller manage the UITabBarItem
SecondViewController *vc2 = [[SecondViewController alloc] initWithNibName:#"SecondViewController" bundle:[NSBundle mainBundle]];
vc2.tabBarItem.title = #"Second View Controller";
[tabbarController setViewControllers:[NSArray arrayWithObjects: vc1, vc2, nil]];
tabbarController.delegate = self; // do not forget to delegate events to our appdelegate
Adding custom UITabBarItems:
Now since you know how to add UITabBarItems through adding view controller, you can also use the same way to add custom UITabBarItems:
UIViewController *tmpController = [[UIViewController alloc] init];
tmpController.tabBarItem.title = #"Custom TabBar Item";
// You could also add your custom image:
// tmpController.tabBarItem.image = [UIImage alloc];
// Define a custom tag (integers or enums only), so you can identify when it gets tapped:
tmpController.tabBarItem.tag = 1;
Modify the line above:
[tabbarController setViewControllers:[NSArray arrayWithObjects: vc1, vc2, tmpController, nil]];
[tmpController release]; // do not forget to release the tmpController after adding to the list
All fine, now you have your custom button in your TabBar.
What about handling events of this custom UITabBarItem?
Its easy, look:
Add the UITabBarControllerDelegate to your AppDelegate class (or the class which is holding the tabbarController).
#interface YourAppDelegate : NSObject <UIApplicationDelegate, UITabBarControllerDelegate> { }
Fit the protocol definition by adding this function:
- (void)tabBarController:(UITabBarController *)theTabBarController didSelectViewController:(UIViewController *)viewController {
NSUInteger indexOfTab = [theTabBarController.viewControllers indexOfObject:viewController];
UITabBarItem *item = [theTabBarController.tabBar.items objectAtIndex:indexOfTab];
NSLog(#"Tab index = %u (%u), itemtag: %d", indexOfTab, item.tag);
switch (item.tag) {
case 1:
// Do your stuff
break;
default:
break;
}
}
Now you have all you need to create and handle custom UITabBarItems.
Hope this helps.
Have fun....
Access the tabBar - property of your UITabBarController (reference), grab the elements array with the items - property (reference), add a new UITabBarItem to this array and use the tabBar's setItems:animated: - method to update your tab bar. Add an action to this tab bar to display the modal view controller.
I'm triying to combine a TabBar + Navigation app.
I have 5 tab bars, 4 are listing of stuff and drill down to details views.
I try to follow this tutorial:
http://www.iphonedevforums.com/forum/iphone-sdk-development/124-view-controller-problem.html
But always get a blank view.
This is what I do, with a clean project:
I start with a TabBar template app.
I put 5 tab bar buttons.
I create a controller like:
#interface FirstViewController : UINavigationController {
}
I put the main window.xib on tree mode & change the selected first view to FirstViewController
I select the TabBar Controller in Interface builder, go to TabBar Attributes & change the class to navigation controler.
Select the fist view & put the nib name "SecondView"
In response, I get a blank screen.
I must add that I wanna navigate from the details views, no from the main windows.
i.e in the main window tab bar 1 is the list of people. I select a person then wanna navigate to the detail window.
First, you never want to subclass UINavigationController or UITabBarController.
Second, I did not quite get what you did, but a correct sequence to create a navigation controller inside a tab bar controller is something like this:
// in MyAppDelegate.h
UINavigationController *nc1, *nc2;
FirstTabRootViewController *vc1;
SecondTabRootViewController *vc2;
UITabBarController *tbc;
// in MyAppDelegate.m
nc1 = [[UINavigationController alloc] init];
vc1 = [[FirstTabRootViewController alloc] initWithNibName:nil bundle:nil];
vc1.tabBarItem.title = #"Tab 1";
vc1.tabBarItem.image = [UIImage imageNamed:#"tab1.png"];
vc1.navigationItem.title = "Tab 1 Data";
nc1.viewControllers = [NSArray arrayWithObjects:vc1, nil];
nc2 = [[UINavigationController alloc] init];
vc2 = [[SecondTabRootViewController alloc] initWithNibName:nil bundle:nil];
vc2.tabBarItem.title = #"Tab 2";
vc2.tabBarItem.image = [UIImage imageNamed:#"tab2.png"];
vc2.navigationItem.title = "Tab 2 Data";
nc2.viewControllers = [NSArray arrayWithObjects:vc2, nil];
tbc = [[UITabBarController alloc] init];
tbc.viewControllers = [NSArray arrayWithObjects:nc1, nc2, nil];
Note that it's your view controller that controls the text/icon in the tab bar and in the navigation bar. Create a UINavigationController instance for each of your tabs; UINavigationController contains a stack of view controllers (see viewControllers property) which should contain at least one item — your root controller for that tab. Also create an UITabBarController to manage the tabs.
Of course, you can (and probably should) use interface builder instead of code to instantiate the mentioned classes and set the properties. But it's important that you understand what happens behind the scenes; interface builder is nothing more than a convenient way to instantiate and set up objects.
Hope this is helpful; please refine your question if it's not.
Still getting the blank screen On Starting the application after implementing the above code. Where i 'm writing it wrong.
nc1 = [[UINavigationController alloc] init];
nc2 = [[UINavigationController alloc] init];
vc1 = [[FirstRootViewController alloc]initWithNibName:#"FirstRootViewController" bundle:nil];
vc1.tabBarItem.title = #"Item 1";
vc1.tabBarItem.image= [UIImage imageNamed:#"home.png"];
vc1.navigationItem.title = #"Tab1 Data";
nc1.viewControllers = [NSArray arrayWithObjects:vc1,nil];
vc2 = [[SecondRootViewController alloc]initWithNibName:#"SecondRootViewController" bundle:nil];
vc2.tabBarItem.title = #"Item 2";
vc2.tabBarItem.image= [UIImage imageNamed:#"home.png"];
vc2.navigationItem.title = #"Tab2 Data";
nc2.viewControllers = [NSArray arrayWithObjects:vc2,nil];
tbc = [[UITabBarController alloc]init];
tbc.viewControllers = [NSArray arrayWithObjects:nc1,nc2,nil];
[window addSubview:tbc.view];
[window makeKeyAndVisible];
Here is an tutorial that I was able to get working.
I also read the official SDK documentation on the topic: Combining Tab Bar and Navigation Controllers. Since I'm still learning, the tutorial helped me more than the docs.
NOTE: in the tutorial, i don't think you need to subclass UINavigationController, and I'm experimenting with this idea now.
I tried to create an iphone application with UITabBarController and some UINavigationController inside it and faced the same problems as "mamcx". With your example-code i get it to run :) Thanks a lot.
Here is how it works for me.
// YOURS
fourthNavigation = [[UINavigationController alloc ] init ];
fourthViewController = [[[FourthTabRootController alloc] initWithNibName:#"FourthView" bundle:nil] autorelease];
fourthNavigation.tabBarItem.title = #"YOURS";
fourthNavigation.viewControllers = [NSArray arrayWithObjects:fourthViewController, nil];
// Add self-defined UIViewControllers to the tab bar
tabBarController.viewControllers = [NSArray arrayWithObjects:firstNavigation,secondNavigation, thirdNavigation, fourthNavigation, nil];
// Add the tab bar controller's current view as a subview of the window
[window addSubview:tabBarController.view];
The other UINavigationControllers "firstNavigation, ... " are created the same way.
I load the view elements from nib-files that are connected to my subclassed UIViewController classes. You dont need to add a NavigationBar in the IB to your view, cause the UINavigationController has allready one. So you only need to set the title in "initWithNibName"
// The designated initializer. Override to perform setup that is required before the view is loaded.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
// Custom initialization
self.title = #"YOURS";
}
return self;
}
I hope that helps.
Check out "Adding a Navigation Controller to a Tab Bar Interface" under View Controller Catalog for iOS which take you step by step into how exactly this can be achieved