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
Related
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 need to present a view controller from app delegate.
When a phone notification comes in, I am able to decide which one of 3 view controllers (named ForumViewController, BlogViewController & NewsViewController) should be presented by analyzing the 'userInfo' in the method 'didReceiveRemoteNotification'.
But when i try to present the appropriate view controller using storyboards or the code below:
self.viewController = [[MembersViewController alloc] initWithNibName:#"MembersViewController" bundle:nil];
self.window.rootViewController = self.viewController;
[self.window makeKeyAndVisible];
Then, the app gives the error 'Warning: Attempt to present whose view is not in the window hierarchy!'. Also it gets stuck on a particular view controller.
Please keep in mind that the view controllers that I am trying to present are not part of the flow when the app starts (the flow is LogoViewController -> SplashViewController -> HomeViewController).
The HomeViewController & MembersViewController are essentially the main menu pages for public & private viewing. Here I have to display something to the viewer.
choice-1
using push
UINavigationController *navController = (UINavigationController *)self.window.rootViewController;
MembersViewController *vc = [navController.storyboard instantiateViewControllerWithIdentifier:#"MembersViewController"];
[navController pushViewController:vc animated:YES];
using present
MembersViewController *root = (MembersViewController *)self.window.rootViewController;
UIViewController *vc = [root.storyboard instantiateViewControllerWithIdentifier:#"MembersViewController"];
[root presentViewController:vc animated:YES completion:NULL];
upadted
UIStoryboard *mainstoryboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
MembersViewController* pvc = [mainstoryboard instantiateViewControllerWithIdentifier:#"MembersViewController"];
[self.window.rootViewController presentViewController:pvc animated:YES completion:NULL];
Loading a view controller from the storyboard:
[self performSelector: #selector(ShowModalViewController) withObject: nil afterDelay: 0];
-(void)ShowModalViewController{
NSString * storyboardName = #"MainStoryboard";
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:storyboardName bundle: nil];
UIViewController * vc = [storyboard instantiateViewControllerWithIdentifier:#"IDENTIFIER_OF_YOUR_VIEWCONTROLLER"];
[self.window.rootViewController presentViewController:vc animated:YES completion:nil];
}
Identifier of your view controller is either equal to the class name of your view controller, or a Storyboard ID that you can assign in the identity inspector of your storyboard.
I have two views, actualView and nextView. Actually in the actualView, I would like to open the nextView and passing some properties (for example nextView.date = actualView.date) and killing the actualView.
I would like to know if it is possible ?
I used that code :
NSLog(#"Views : %#",self.navigationController.viewControllers);
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:#"Main" bundle: nil];
FormViewController *formView = (FormViewController*)[mainStoryboard instantiateViewControllerWithIdentifier: #"formView"];
formView.delegate = self;
[self presentViewController:formView
animated:YES
completion:nil];
[self.presentingViewController dismissViewControllerAnimated:YES completion:nil];
When I use self.navigationController.viewControllers in this "actualView", it knows where it is : ,
but when I use self.navigationController.viewControllers in the actualView, it is (null)...
So may be a problem with the delegate ?
You can connect the two views with a present modally segue which will kill the actual view and go to the next view.
It is explained quite nicely here https://developer.apple.com/library/ios/recipes/xcode_help-IB_storyboard/Chapters/StoryboardSegue.html
As for passing values from one view to another check out this function:
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?){
if (segue.identifier == "segue identifier connecting the 2 views") {
let viewController = segue.destinationViewController as! UINavigationController
let detailview = viewController.topViewController as! nextViewViewController
detailview.element defined in nextview = value to send
}
There are a lot of examples you can find online with performing segue with identifier. It is a very common question.
Read something about removeFromSuperview() in Apple documentation
You can use a modal Segue.
This way actualView will be deallocated when you move to nextView.
I didn't find an easier way than this :
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:#"Main" bundle: nil];
UIViewController *sourceViewController = self;
UIViewController *destinationController = [mainStoryboard instantiateViewControllerWithIdentifier: #"View3"];
UINavigationController *navigationController = sourceViewController.navigationController;
// Pop to root view controller (not animated) before pushing
[navigationController popToRootViewControllerAnimated:NO];
[navigationController pushViewController:destinationController animated:YES];
I have three UIViewControllers ViewController, HomeViewController and RegisterViewController using storyboard. Their Storyboard ID is Login, Home and Registration respectfully. There is a button on RegisterViewController view named 'Register'. After successful registration i want to go to home page i.e., HomeViewController. How to do it. Please help I'm new to iOS.
thanks
- (IBAction)yourRegisterButtonAction:(id)sender
{
[self performSegueWithIdentifier:#"YOUR_SEUGE_NAME" sender:nil];
}
Try This
- (IBAction)buttonRegister:(id)sender {
UIStoryboard* storyboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
// replace Main with your storyboard name
HomeViewController *homeVC = [storyboard instantiateViewControllerWithIdentifier:#"Home"];
[self.view addSubview:homeVC.view];
}
Implement a navigation controller and do this.
-(IBAction)registerButtonTapped:(id)sender{
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
HomeViewController *viewController =(HomeViewController*) [storyboard instantiateViewControllerWithIdentifier:#"Home"];
[self.navigationController pushViewController:viewController animated:YES];
}
I have three View controller A,B,C.I have navigation controller attached to A view controller.In A i have some buttons,I have attached the button segue to B view controller.Onclick of the button i go to the B view controller.On B View controller i have UITableView on click of table view item i am launching the C view controller.below is the code for that
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if(indexPath.row==0)
{
NSLog(#"first cell");
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle: nil];
UIViewController * vc = [storyboard instantiateViewControllerWithIdentifier:#"BusinessCard"];
[self presentViewController:vc animated:YES completion:nil];
}
else if(indexPath.row==1)
{
NSLog(#"second cell");
}
else if(indexPath.row==2)
{
NSLog(#"third cell");
}
}
But on C view controller the navigation Bar is not appearing.I think C view controller is not linked to the Navigation Controller.
You use navigationController push method to display navigation bar in C viewController
try this code:
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle: nil];
UIViewController * vc = [storyboard instantiateViewControllerWithIdentifier:#"BusinessCard"];
[self.navigationController pushViewController:vc animated:YES];
Use the code below
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle: nil];
UIViewController * vc = [storyboard instantiateViewControllerWithIdentifier:#"BusinessCard"];
UINavigationController *nav=[[UINavigationController alloc] initWithRootViewController:vc];
[self presentViewController:nav animated:YES completion:nil];
You need to present it using UINavigationController as modal.
Hope it helps.
use this:
[self.navigationController pushViewController:vc animated:YES];
You can use "Push" segue and embed your ViewController in Navigation Controller, and then use its Navigation Controller's functions like pushViewController and popViewControllerAnimated
Answer are all correct, but i just want to explain things..
//This line gets the storyboard with the name "Main" which contains all
//the setup you made for UI (User interface)
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle: nil];
//While this like gets the view inside your storyboard with
//storyboard ID/indentifier `BusinessCard `
UIViewController * vc = [storyboard instantiateViewControllerWithIdentifier:#"BusinessCard"];
//Lastly, this line is correct presenting the viewcontroller BUT this doesn't add your
//viewcontroller to the array of viewControllers inside navigationController
//
//Also, this line makes you present the viewController above the
//rootViewController of window which is in your case the navigationController
//
This is you Error
[self presentViewController:vc animated:YES completion:nil];
//This is what you are looking for, and the correct one for your implementation
//
//This will let you add the `vc`(viewController) to the array of viewController
//in navigationController, to confirm that you can check the `self.navigationController.viewControllers`
//which will return the array of viewController inside your navigationController
This is the Answer
[self.navigationController pushViewController:vc animated:YES];
Hope this helps you, and my explanation is apprehendable.. Cheers