AppDelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
TabBarController *tabBarController = [[TabBarController alloc] init];
UIViewController *vc2 = [[SearchPageControllerViewController alloc] init];
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:vc2];
NSArray *viewControllers = [NSArray arrayWithObjects:navController, vc2, nil];
[tabBarController setViewControllers:viewControllers];
}
I use push segue connection, i have got tab bar but when i change screen with push segue tab bar get invis how can fix this problem i added this code part but now worked any idea ?
Check images for more info...
Make sure you have not checked the "Hide bottom bar on push" option on the Attribute Inspector of the view controllers on Storyboard.
To avoid tabbar from disappearing while changing viewController I would used presentViewController, and dismissViewController instead.
UIViewController *controller = [self.storyboard instantiateViewControllerWithIdentifier:#"testview"];
[self presentViewController:controller animated:YES completion:NULL];
UIViewController *controller = [self.storyboard instantiateViewControllerWithIdentifier:#"rootVC"];
[self dismissViewController:controller animated:YES completion:NULL];
Related
I am working on single view application. On click of button i want to switch to next page(let say menu controller). Please specify what changes I have to make in appdelegate to add a navigation controller as I am completely new to iOS.
[button addTarget:select action:#selector(buttonClick) forControlEvents:UIControlEventTouchUpInside]; and implement the selector as
-(void)buttonClick{
UIViewController *menu = [[UIViewController alloc] init];
[self.navigationController pushViewController:menu animated:YES];
}
Add this in the app delegate for the root view controller:
FirstViewController *firstViewController = [[FirstViewController alloc] initWithNibName:#"view name" bundle:nil];
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:firstViewController];
self.window.rootViewController = navigationController;
Inside the button click:
SecondViewController *secondViewController = [[SecondViewController alloc] initWithNibName:#"view name" bundle:nil];
[self.navigationController pushViewController:secondViewController animated:YES];
you have to set UINavigationController as Window.rootViewController like below.
FirstViewController *viewController = [[FirstViewController alloc] initWithNibName:#"FirstViewController" bundle:nil];
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:viewController];
self.window.rootViewController = navigationController;
You should subclass UIViewController and implement the view however you want. Views can be built programmatically or in interface builder.
Then you would either use segues, storyboard identifiers, or a xib file to load the view.
Might look like this: (assuming you set up the view controllers in a storyboard and connected them with appropriate segues & the identifier below)
-(void)buttonClick{
[self performSegueWithIdentifier:#"MySegueIdentifier"];
}
-(void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString: #"MySegueIdentifier"]) {
MyCustomViewController* vc = (MyCustomViewController*)[segue destinationViewController];
//do something with your view controller, like set a property
}
}
Or maybe like this
-(void) buttonClick {
MyCustomViewController* vc = (MyCustomViewController*)[[UIStoryboard storyboardWithName: #"MyStoryboard"] instantiateViewControllerWithIdentifier: #"MyStoryboardIdentifier"];
[self.navigationController pushViewController: vc animated: YES]; //assuming current view controller is a navigation stack. Or could also do presentViewController:animated:
}
You would add a class subclassing UIViewController to your project, and import it (#import "MyCustomViewController.h" in the .m file of the view controller you're pushing from).
Could also use a xib file, but I won't bother with those since Storyboards are much easier to work with.
Without a storyboard:
Inside the app delegate:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
navigationController = [[UINavigationController alloc] init]; //navigation controller is a property on the app delegate
// Override point for customization after application launch.
FirstViewController *firstViewController = [[FirstViewController alloc] init];
[navigationController pushViewController: firstViewController animated:NO];
[window addSubview:navigationController.view];
[window makeKeyAndVisible];
return YES;
}
Inside your FirstViewController:
-(void) buttonClick {
MyCustomViewController* vc = [[MyCustomViewController alloc] init]; // or maybe you have a custom init method
[self.navigationController pushViewController: vc animated: YES];
}
Very simple:
-(void)ButtonClickActionMethod
{
[button addTarget:select action:#selector(buttonClick) forControlEvents:UIControlEventTouchUpInside];
}
Clicked Action:
-(void)buttonClick{
YourViewController *view = [[YourViewController alloc] initWithNibName:#"YourViewController" bundle:nil];
[self.navigationController pushViewController:view animated:YES];
}
I'm new to Objective-C and I want to add a UINavigationBar on my CatrgoryBIDViewController. I have proceed UIButton in InstructionBIDViewController.m file that should navigate to CatrgoryBIDViewController. Here is the function code:
- (IBAction)proceed:(id)sender {
viewControllercat =
[[CatrgoryBIDViewController alloc]
initWithNibName:#"CatrgoryBIDViewController"
bundle:nil];
UINavigationController *nav =
[[UINavigationController alloc]
initWithRootViewController:self.viewControllercat];
//[self.navigationController pushViewController:viewControllercat animated:YES];
[self.navigationController setNavigationBarHidden:NO animated:YES];
}
But it is not setting the UINavigationBar.
You should read the documentation here to understand the way a NavigationController is working. For your case:
If your current ViewController (where your proceed-method is implemented) has a NavigationController (is child of it), you can push another ViewController onto the stack of that NavigationController with
[self.navigationController pushViewController:viewControllercat animated:YES];
In this case you do not need to initialize another NavigationController, but in your CatrgoryBIDViewController in viewWillAppear you need to make the NavigationBar visible if it was not before already with
[self.navigationController setNavigationBarHidden:NO animated:YES];
If your current ViewController does not have a NavigationController, you can not push another ViewController on top of it and can not show the NavigationBar of it (although you can create your own NavigationBar and add it to the View of the ViewController, but without the usual Navigation-behaviour embedded).
If you open your ViewController programmatically (e. g. from the AppDelegate) you are correct to do so by your call:
viewControllercat = [[CatrgoryBIDViewController alloc] initWithNibName:#"CatrgoryBIDViewController" bundle:nil];
UINavigationController *nav=[[UINavigationController alloc] initWithRootViewController:self.viewControllercat];
My apologies - After having reread your question, I am going to tweak my answer some.
-(IBAction)proceed:(id)sender
{
viewControllercat = [[CatrgoryBIDViewController alloc] init];
UINavigationController * nc =
[[UINavigationController alloc] initWithRootViewController:vc];
// We now need to display your detail view but cannot push it.
// So display modally
[self presentViewController:nc animated:YES completion:Nil];
}
The above should result in your DetailViewController - CategoryBIDViewController being displayed on top of your InstructionBIDViewController and it should have a UINavigationController in it.
I have following structure in my iOS app:
RootViewController (table view controller showing core data).
On RootViewController is a view including 4 buttons.
Button 1: Menu...
After pressing button 1, NSManagedObjectContext is passed to MenuViewController.
On MenuViewController there are several buttons, one of them is used to open DoneViewController, which is a duplicate from RootViewController (only NSPredicates changed to show different core data objects.
DoneViewController is showing correctly the expected rows, but it was supposed to have a navigation bar, which is not shown.
This is the code used to open DoneViewController:
- (IBAction)doneToDoaction:(id)sender {
DoneViewController *viewController = [[DoneViewController alloc] init];
viewController.managedObjectContext = [self mainContext];
[self presentViewController:viewController animated:YES completion:nil];
}
What should I do to open the view and have a navigation bar like RootViewController does?
I will now put all the navigation controller instances that are now in my app:
//AppDelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
// Fetch the data to see if we ought to pre-populate
NSError *error = nil;
if (![[self fetchedResultsController] performFetch:&error]) {
NSLog(#"Unresolved error %#, %#", error, [error userInfo]);
abort();
}
[self loadFavoriteThingsData];
RootViewController *rootViewController = (RootViewController *)
[navigationController topViewController];
[rootViewController setManagedObjectContext:[self managedObjectContext]];
[window addSubview:[navigationController view]];
[window makeKeyAndVisible];
return YES;
}
//RootViewController
- (IBAction)MenuToDoAction:(id)sender {
MenuViewController *viewController = [[MenuViewController alloc] init];
viewController.mainContext = [self managedObjectContext];
[self presentViewController:viewController animated:YES completion:nil];
}
//MenuViewController
- (IBAction)doneToDoaction:(id)sender {
DoneViewController *viewController = [[DoneViewController alloc] init];
viewController.managedObjectContext = [self mainContext];
[self.navigationController pushViewController:viewController animated:YES];
}
The last doneToDoaction method, as proposed by #EricLee, doesn't throw an exception, but the button action is not executed and the app freezes...
Instead of presenting DoneViewController, you want to push it onto the current navigation controller.
It is the navigation controller (self.navigationController) that has the view containing the navigation bar. Pushing a view controller onto it will cause that view controller's view to appear, along with the navigation bar, inside the navigation controller's view.
Add navigation controller when present view controller
- (IBAction)doneToDoaction:(id)sender {
DoneViewController *viewController = [[DoneViewController alloc] init];
viewController.managedObjectContext = [self mainContext];
UINavigationController * nVC=[[UINavigationController alloc] initWithRootViewController:viewController];
[self presentViewController:nVC animated:YES completion:nil];
}
If you use storyboard or xib and do not want to push DoneViewController to UINavigationViewController, I suggest you to make a gap for status bar manually in storyboard or xib.
In iOS7, the status bar is transparent. therefore, the top of your VC is extended under it.
If you push it to UINavigationViewController and navigation bar is opaque, there is nothing to do. But, if you don't do that, set a gap manually.
EDIT
Sorry, I found another way better than what I suggest you before. You don't need transparent status bar, set status bar style option to Black Opaque in General tab in project configuration.
You can just push the To-be-presented viewController into the current( presenting) viewcontroller's navigationController.
- (IBAction)doneToDoaction:(id)sender {
DoneViewController *viewController = [[DoneViewController alloc] init];
viewController.managedObjectContext = [self mainContext];
[self.navigationController pushViewController:viewController animated:YES];
}
In your AppDelegate didFinishLaunchingWithOptions
self.window = [[UIWindo walloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.controller = [[ViewController alloc] init];
UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:self.controller];
self.window.rootViewController = nav;
[self.window addSubview:nav.view];
[self.window makeKeyAndVisible];
I am developing a ViewController (login app) with a single button, when I press this button I want to appear my UISplitView like this:
- (IBAction)loadSplitViewController:(id)sender {
[self showSplitViewController];
}
and the code developed for the creation of my splitViewController is this:
-(void)showSplitViewController{
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:#"MainStoryboard_iPad" bundle: nil];
LeftViewController *leftViewController = [mainStoryboard instantiateViewControllerWithIdentifier:#"LeftViewController"];
RightViewController *rightViewController = [mainStoryboard instantiateViewControllerWithIdentifier:#"RightViewController"];
UINavigationController *leftNavController = [[UINavigationController alloc] initWithRootViewController:leftViewController];
UINavigationController *rightNavController = [[UINavigationController alloc] initWithRootViewController:rightViewController];
UISplitViewController *splitViewController = [[UISplitViewController alloc] init];
splitViewController.viewControllers = [NSArray arrayWithObjects:leftNavController, rightNavController, nil];
leftViewController.delegate = rightViewController;
splitViewController.delegate = rightViewController;
[self presentViewController:splitViewController animated:YES completion:^{}];
}
the thing is... if I use for display my splitViewController this line:
[self presentViewController:splitViewController animated:YES completion:^{}];
throws me an error
I also tried with
[self.view addSubview:splitViewController.view];
but this way my splitViewController never rotates, and delegates doesn't work as well... and I don't want my splitViewController to be a subview of my viewController, I want it to appear more like an independient modalView
any help I'll appreciate
thanks in advance
Split view controllers really should be the root view controller of the window (in fact Apple says it has to be, though there seem to be some examples where this isn't true). Instead of presenting it, you could just switch the window's root view controller to be the split view controller.
self.view.window.rootViewController = splitViewController;
In my window base application I need to navigate to editorview from my appdelegate when i click on the second item of my tabbarcontroller it will shows an actionsheet with three option.
actionsheet works fine, it will shows an actionsheet if you choose the second item from tabbar.
But i need to push to the other view when i choose the first option of my action sheet
i declare my actionsheet in appdelegate.
i already implement the actionsheetdelegate
(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
the method is trigerred and it can shows if i do nslog. but it cannot push to the viewcontroller that i want..
here's my code:
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 0)
{
DetailViewController *v2 = [[DetailViewController alloc] init];
NSLog(#"PUSH TRIGER");
[self.window.rootViewController.navigationController pushViewController:v2 animated:YES];
}
}
NOTE: I already embed my tabbarcontroller and navigation controller in my storyboard
It is full of bad answer related to this issue.
I hope mine fits your requirements.
1.- Inside of
- (void)application:(UIApplication*)application didReceiveRemoteNotification:(NSDictionary*)userInfo
// 1.- First: instantiate the navigationController. Normally the rootviewcontroller
UINavigationController *navigationController = (UINavigationController *)self.window.rootViewController;
// 2.- Second: Instantiate Storyboard
// It might be tagged MainStoryBoard. Be careful if you've changed it
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle: nil];
// 3.- Third instantiate the VC you want to navigate
// In my particular case it is called IniciarSliderViewController . Don't forget to import it in the appdelegate. Also pay attention to tagged correctly. In my case MenuSlider
IniciarSliderViewController *controller = (IniciarSliderViewController*)[mainStoryboard instantiateViewControllerWithIdentifier: #"MenuSlider"];
//4.- And last one, you can now push as you usually do in the VC
[navigationController pushViewController:controller animated:YES];
Don't hesitate to ask if you still have problems
Do like this
What did you assign VC for UITabBarController ? I bet UIViewController? Try assign UINavigationController instead of UIViewController
synthesize UINavigationController *navController;
self.navController = [[UINavigationController alloc] init];
SomeViewController *viewController = [[SomeViewController alloc] initWithNibName:#"SomeViewController" bundle:nil];
self.navController.viewControllers = [NSArray arrayWithObject:viewController];
UITabBarController *tabBarController = [[UITabBarController alloc] init];
[tabBarController setViewControllers:[NSArray arrayWithObjects:
self.navController, nil]];
Then on your actionsheet
[self.navController pushViewController:v2 animated:YES];
EDIT for storyboard
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil];
self.navController = (UINavigationController*) [storyboard instantiateViewControllerWithIdentifier:#"MyNavController"];
Hope that helps
instead of this self.window.rootViewController.navigationController
use UINavigationController object