I opened my project after a week and it seems, for all the new UIViewController I create in the StoryBoard, instantiateViewControllerWithIdentifier is returning is nil. All the ViewControllers which are already in the project are working fine.
GCHConnectViewController* gchCVC = [self.storyboard instantiateViewControllerWithIdentifier:#"GchConnect"];
navigationController.viewControllers = #[gchCVC];
First line is returning nil, my initial thought was that self.storyboard is returning nil, so I tried this and put breakpoint.
if (self.storyboard != nil) {
GCHConnectViewController* gchCVC = [self.storyboard instantiateViewControllerWithIdentifier:#"GchConnect"];
navigationController.viewControllers = #[gchCVC];
}
and its going to inside the if and crash at the second line..
I've also added the class and storyboard id correctly.
If I try to load another ViewController which was already there, it works, but not new ones.
Can't seem to figure out what is the problem. Any help is appreciated.
I've a navigation drawer. switching to other ViewController except with the one with identifier 'GchConnect' (ie. indexPath.section == 1 and indexpath.row == 0 ) works. They are all in the same storyboard
If you have multiple storyboards, self.storyboard returns the one that the current UIViewController is in. You need you check the name of storybaord for "GchConnect". And instantiate that storyboard with storyboardWithName:bundle:
UIStoryboard storyboard = [UIStoryboard storyboardWithName:bundle:nil];
GCHConnectViewController* gchCVC = [storyboard instantiateViewControllerWithIdentifier:#"GchConnect"];
use this code
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
HomepageViewController *vc = [mainStoryboard instantiateViewControllerWithIdentifier:#"GchConnect"];
[self.navigationController pushViewController:vc animated:YES];
instead of
if (self.storyboard != nil) {
GCHConnectViewController* gchCVC = [self.storyboard instantiateViewControllerWithIdentifier:#"GchConnect"];
navigationController.viewControllers = #[gchCVC];
}
try to use:
if (self.storyboard != nil) {
GCHConnectViewController* gchCVC = [self.storyboard instantiateViewControllerWithIdentifier:#"GchConnect"];
navigationController.pushViewController(gchCVC, animated: true)
}
What you should do is either push or present view controller. At the moment you're trying to replace all viewcontrollers that are in your navigationcontroller,
Try this code,
if you present the viewcontroller use below code,
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:
#"YourStoryBoardName" bundle:[NSBundle mainBundle]];
GCHConnectViewController* gchCVC = [storyboard instantiateViewControllerWithIdentifier:#"GchConnect"];
[self presentViewController:gchCVC animated:YES completion:nil];
or if you Push the viewcontroller use below code,
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:
#"YourStoryBoardName" bundle:[NSBundle mainBundle]];
GCHConnectViewController* gchCVC = [storyboard instantiateViewControllerWithIdentifier:#"GchConnect"];
[self.navigationController pushViewController:gchCVC animated:YES];
hope its helpful
My problem was that I add localization and changes I add to the storyboard were getting updated to the simulator/device.
It fixed it by:
selecting the StoryBoard, then
Editor > Localization Locking > Reset Locking Controls
Be sure that the code module for the ViewController has been added to the target you are building for. This fixed it for me.
Related
Team,
I have two storyboard.
One For authentication
And another for My application Dashboard.
For Authentication Storyboard The initialisation screen is loginScreen.
After login successfully i am loading Dashboard Storyboard.
For dashboard storyboard the initial screen is MainViewController.
Here I am implemented logout from in DashboardStoryboard. So now i want to switch back to my Authentication Storyboard.
Here its going back to loginScreen.
But I thing its not proper way for implementing.
It will be more helpful is there a way I can do better?
-(void)logout{
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Authentication" bundle: nil];
LoginViewScreenController *loginViewScreenController = [storyboard instantiateViewControllerWithIdentifier:#"LoginViewScreenController"];
[self.navigationController pushViewController: loginViewScreenController animated:NO];
}
Your feedback is highly appreciated.
It's Very easy using segue and Storyboard Reference. Please follwo steps and screenshots.
Step-1)
Drag and drop Storyboard Reference from Object Library in First(Main) Story board.
Step-2)
Add segue from your source ViewController to Storyboard reference.
Step-3)
Select another(second) storyboard.
Reference ID: StoryboardID of your destinationViewControler(second View Controller) which is available in Second.Storyboard
-(void)logout
{
UIViewController *aVCObj = [[UIApplication sharedApplication]delegate].window.rootViewController;
if ([aVCObj isKindOfClass:[UINavigationController class]]) {
UINavigationController *aNavController = (UINavigationController *)aVCObj;
[aNavController popToRootViewControllerAnimated:YES];
}
}
Here is a trick to do this by setting up a key true using NsuserDefaults when user logged in otherwise false and navigate your application when starts accordingly using presentViewController method without animation so the user will not get any option to go back previous vc.
Have a look below code illustrating above sentence:
if ([[[NSUserDefaults standardUserDefaults] valueForKey:#"isloggedIn"] isEqualToString:#"true"]) {
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
UIViewController *vc = [mainStoryboard instantiateViewControllerWithIdentifier:#"loginView"];
[self presentViewController:vc animated:NO completion:nil];
}else{ // when logout
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
UIViewController *vc = [mainStoryboard instantiateViewControllerWithIdentifier:#"logoutView"];
[self presentViewController:vc animated:NO completion:nil];
}
If you need to apply some effects when vc appear just ad these two lines before presentViewController method see:
[vc setModalPresentationStyle:UIModalPresentationCustom];
[vc setModalTransitionStyle:UIModalTransitionStyleCrossDissolve];
Note: set the key false when user logout.
let sb = UIStoryboard(name: "Main", bundle: nil)
let homeVC = sb.instantiateViewController(withIdentifier: "TabBarController")
let appDelegate = UIApplication.shared.delegate as! AppDelegate
appDelegate.window?.rootViewController = homeVC
I am a newbie in ios. I tried working with UITabbarController and I had some problem with it when I tried passing data from a ViewController (this ViewController is not an item in Tabbar) to an other ViewController that is item in Tabbar. In this case i wanted when I click button Login,"Welcome to shop" will appear and the username in Login form will pass into label in "Welcome to shop".
I use code below to make "welcom to shop" controller appearing:
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
UITabBarController *tabbarController= [storyboard instantiateViewControllerWithIdentifier: #"tabbarID"];
[self presentViewController: tabbarController animated: YES completion: nil];
So any idea for me to passing username (in LoginController) into label (WelcomeToShopController) ?
My problem resolved after i researched :). Because i used tabbar and navigationController so i should instance tabbar -> NavigationController -> ViewController. In my case, this code below will work perfectly.
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
UITabBarController *tabbarController= [storyboard instantiateViewControllerWithIdentifier: #"tabbarID"];
UINavigationController *nav = (UINavigationController *)[tabbarController.viewControllers firstObject];
HistoryOrderingController *historyOderingVC = (HistoryOrderingController *)[[nav viewControllers] firstObject];
historyOderingVC.user = self.user;
[self presentViewController: tabbarController animated: YES completion: nil];
I don't know if this is possible or not but I wrote a project using xibs and want to modally switch to a storyboard project.
I know that to switch VC's you do something like
NewViewController *NewVC = [[NewViewController alloc] init];
[self presentModalViewController:NewVC animated:YES];
upon clicking a button, that I'll call "switch"
There is another project using solely storyboards that I want to call using "switch"
How do I go about doing this? Is it possible to do this?
Yes it is possible. You can do something like this:
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"YourStoryboardName" bundle:nil];
MainMenuViewController *mainmenuvc = [storyboard instantiateViewControllerWithIdentifier:#"mainMenuViewController"];
[self.navigationController pushViewController:mainmenuvc animated:YES];
EDIT
If I understand your comment, you want to change the root view controller. You can do so by:
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"RVCStoryboard" bundle:nil];
MainMenuViewController *mainmenuvc = [storyboard instantiateViewControllerWithIdentifier:#"mainMenuViewController"];
[[UIApplication sharedApplication].delegate].window.rootViewController = mainmenuvc;
Please note that for this to work, in your RVCStoryboard you have to select the viewcontroller you are trying to load, and assign a name to it so that the instantiateViewControllerWithIdentifier: method will work. Check the attached image, the field "Storyboard ID":
I have multiple storyboards within my app. I want to pass an object when a new storyboard is opened.
I'am doing this:
UIStoryboard* storyboard = [UIStoryboard storyboardWithName:#"SetupStoryboard" bundle:[NSBundle mainBundle]];
UINavigationController* initialHelpView = [storyboard instantiateInitialViewController];
SetupViewController *setup = (SetupViewController*) [initialHelpView topViewController];
setup.data = self.data;
initialHelpView.modalPresentationStyle = UIModalPresentationFormSheet;
[self presentViewController:initialHelpView animated:YES completion:nil];
But when the storyboard is presented the setup.data is nil in viewDidLoad, viewWillAppear etc of the SetupViewController...
Why is that?
I don't see anything wrong with this code. Problem may be elsewhere.
- (IBAction)submitButtonClicked:(id)sender{
NSLog(#"here");
SuccessOrFailViewController *sfvc = [[SuccessOrFailViewController alloc] init];
[self presentViewController:sfvc animated:NO completion:NULL];
}
I am trying to open a new page when a user clicks the submit button in the app. However, this opens completely black screen with nothing on it. How do I make it open the viewController instead ?
You are not entering the nib name for the user Interface:
SuccessOrFailViewController *sfvc = [[SuccessOrFailViewController alloc] initWithNibName:#"SuccessOrFailViewController" bundle:nil];
[self presentViewController:sfvc animated:NO completion:NULL];
For storyboard this is the way to go:
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil];
SuccessOrFailViewController *sfvc = [storyboard instantiateViewControllerWithIdentifier:#"SuccessOrFailViewController"];
[sfvc setModalPresentationStyle:UIModalPresentationFullScreen];
[self presentModalViewController:sfvc animated:YES];
Swift
var next = self.storyboard?.instantiateViewControllerWithIdentifier("DashboardController") as! DashboardController
self.presentViewController(next, animated: true, completion: nil)
don't forget to set ViewController StoryBoard Id in StoryBoard -> identity inspector
Incase anyone else finds this, make sure you haven't set self.view.backgroundColor = UIColor.clearColor() in the view to be shown... This solved it for me.
For Storyboard iOS7
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil];
SuccessOrFailViewController *sfvc = [storyboard instantiateViewControllerWithIdentifier:#"SuccessOrFailViewController"];
[sfvc setModalPresentationStyle:UIModalPresentationFullScreen];
[self presentViewController:sfvc animated:YES completion:nil];
I've had this happen after adding and deleting View Controllers in the Storyboard and forgetting to update the View Controller with the latest Storyboard identifier.
For example, if you are programmatically moving to a new View Controller, like this (note Identifier in the code is "FirstUserVC"):
let firstLaunch = (storyboard?.instantiateViewControllerWithIdentifier("FirstUserVC"))! as UIViewController
self.navigationController?.pushViewController(firstLaunch, animated: true)
The make sure in Interface Builder you have the Storyboard ID set like this with FirstUserVC listed in the Identity for Storyboard ID: