I'm using this code to programmatically move from my main screen (Login page) to the view behind it, but it gives a black screen;
LandingController *landingController = [[LandingController alloc] init];
[self presentViewController:landingController animated:YES completion:nil];
I've included the LandingController.h file into my ViewController.h and it also doesn't give any errors.
When I remove my Storyboard ID from my LandingController (which isn't referred to) in the above code, I get this message:
/Users/allendar/Desktop/iOS Apps/#HIDDEN# App/#HIDDEN# App/Base.lproj/Main_iPad.storyboard: Scene is unreachable due to lack of entry points and does not have an identifier for runtime access via -instantiateViewControllerWithIdentifier:.
I'm assuming this has something to do that I only call the associated Controller for the View, whereas it doesn't actually instantiate the View's internals.
I already tried some other examples by triggering the Storyboard ID of the LandingController, but it either gives errors or just does nothing (like this code does).
Any ideas how I can invoke the View itself when triggering its Controller, or either doing it through the Storyboard ID?
Try this:
UIStoryboard *storybboard = [UIStoryboard storyboardWithName:#"YOURSTORYBOARD" bundle:nil];
LandingController * landingController = [storybboard instantiateViewControllerWithIdentifier:#"STORYBOARD ID"];
[self presentViewController: landingController animated:YES completion:nil];
Try loading your view controller from the storyboard instead of doing alloc->init. Give your view controller an identifier in your storyboard and load it as follows:
[self presentViewController:[[UIStoryboard storyboardWithName:#"YourStoryBoardName" bundle:nil] instantiateViewControllerWithIdentifier:#"YourIdentifier"]];
Related
The following code should popover a view and the view size should be customized as I customized it by code, but when I run it, I see it's not customized.
Can anyone help?
- (IBAction)barButtonLeft:(id)sender {
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
_myViewController = [storyboard instantiateViewControllerWithIdentifier:#"Sort"];
_myViewController.modalPresentationStyle = UIModalPresentationPopover;
self.myViewController.modalPresentationStyle = UIModalPresentationFormSheet;
self.myViewController.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
self.myViewController.preferredContentSize = CGSizeMake(139, 70);
[self presentViewController:_myViewController animated:YES completion:nil];
UIPopoverPresentationController *popController = [_myViewController popoverPresentationController];
}
You're using _myViewController and self.myViewController together here, which is a little confusing but I assume you have a property, myViewController, backed by an instance variable, _myViewController? I'm therefore assuming both of these things are actually pointing to the same instance.
For clarity I'd recommend sticking with one or the other, probably property access.
If they are both pointing to the same instance, then what the code above is doing is setting a popover presentation style, then setting a form sheet presentation style. The last one you set will "win", so the view controller will be presented as a form sheet (on iPads, this will be a box in the middle of the screen, on iPhones, it will be full screen).
If you are running this code on an iPhone, then popovers don't work by default anyway - they will be presented full screen. To prevent that, you need to set a delegate to the popover presentation controller, implement - (UIModalPresentationStyle)adaptivePresentationStyleForPresentationController:(UIPresentationController *)controller traitCollection:(UITraitCollection *)traitCollection;, and return UIModalPresentationNone.
You must also set a source view or bar button item on the popover presentation controller before attempting the presentation, or your app will crash.
I'm trying to work on a simple login application which on successful login displays a menu page. On the action sheet of menu page, we have an option of looking at all the users logged in that phone and clicking on any user, it should do some login processing and direct to menu page again. This is how the workflow should go on.
Below is the image that explains it.
All the controllers are connected to segues except for accounts controller and middle controller. Navigation between those two is done using pushViewController as I had to pass some info from accounts controller(table view controller with list of all users) to middle Controller.
MiddleController *maController = [[MiddleController alloc] init];
if (maController.view) {
maController.ma_userId = mo_userId; // Set the exposed property
maController.ma_password = mo_password;
[self.navigationController pushViewController:maController animated:YES];
Middle controller is doing all the process perfectly after getting the details. But directing to menu controller is where I'm facing the problem. If I use a segue between middle controller and menu controller an error is thrown saying no identifier with the name segueName found. But if I use a pushViewController then it is displaying a blank black screen. Can some help me to solve this.
This is how I'm pushing it:
MenuTableViewController *mapMenuTableviewController = [[MenuTableViewController alloc]init];
[self.navigationController pushViewController:mapMenuTableviewController animated:NO];
I've tried all the ways that are posted in previous SO questions, but nothing helped.
Thanks in advance
Try not to alloc-init, but instantiate it fom storyboard like this (you should add it a storyboard id)
YourViewControllerClass *viewController = [[UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil] instantiateViewControllerWithIdentifier:#"ViewController"];
And then push it.
You need to add storyboard id like this
And use like
UIViewController *viewController = [[UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil] instantiateViewControllerWithIdentifier:#"ViewControllerID"];
Go to your storyboard, and set an identifier like this :
Now, in your view controller, do this :
YourViewController *viewController = [[UIStoryboard storyboardWithName:#"<your storyboard name>" bundle:nil] instantiateViewControllerWithIdentifier:#"myViewControllerID"];
[self.navigationController pushViewController:viewController animated:NO];
UPDATE -
Push you Accounts view controller and Middle view controller the way i told before.
Then, when your processing is done in the middle controller, just do this :
[[self presentingViewController]presentingViewController]dismissViewControllerAnimated:NO completion:nil];
Add storyboard Id to yput interface builder "SendSMSViewController" and call below code.
let SendSmsVC = self.storyboard?.instantiateViewControllerWithIdentifier("SendSMSViewController") as! SendSMSViewController
self.navigationController?.pushViewController(SendSmsVC, animated: true)
Plz use this code you will go to MenuTableViewController.
for (UIViewController *controller in self.navigationController.viewControllers)
{
if ([controller isKindOfClass:[MenuTableViewController class]])
{
[self.navigationController popToViewController:controller animated:YES];
break;
}
}
Ok, I'm still pretty new; so, please bear with me.
I'm creating a custom app for a friend that displays a list of work orders in a table view. Clicking on a work order brings them to a detail view. In the detail view, there is a button that uses a push to present another screen called completion view. From the completion view, they click a button that uses the following code to present a nib for signature capture.
SigScreenViewController *sigScreenViewController=[[SigScreenViewController alloc] initWithNibName:#"ViewController_iPhone" bundle:nil];
[self presentViewController:sigScreenViewController animated:YES completion:nil];
The signature screen uses: https://github.com/jcmontiel/SignatureViewExample for capturing the signature and does it well. I have a button that completes the transaction and sends it back to the table view list.
My problem is that I cannot create a button that will return me to the completion view in the storyboard.
I've tried the following in a button:
[self dismissViewControllerAnimated:YES completion:nil];
or
[self.navigationController popViewControllerAnimated:YES];
I'm open for any suggestions on how I can do it.
Thanks in advance!
Have you tried having the UIViewControllers embedded in a navigation controller ?
Are you pushing from a UIViewController in UIStoryboard to a NIB file?
If so check out this sample project that pushes from storyboard to a NIB:
// in a navigation controller
// to load/push to new controller use this code
// this will be next screen
DetailsViewController *detailsViewController = [[DetailsViewController alloc ]init];
[self.navigationController pushViewController:detailsViewController animated:YES];
// to go back or pop controller use this
// now it will send back to parent screen
[self.navigationController popViewControllerAnimated:YES];
There are two views in my application.
After launching the app I switch the view with button like this:
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Storyboard" bundle:[NSBundle mainBundle]];
UIViewController *view = [storyboard instantiateViewControllerWithIdentifier:#"view_a"];
[self presentViewController:view_a animated:NO completion:nil];
But whenever i switch the view the code above initialize the view.
I want to maintain previous status of the view.
How can I solve this problem?
instantiateViewControllerWithIdentifier: always returns a new instance of an UIViewController.
You need to keep a reference to a previous one if you don't want to create it over and over.
On an iPad this will present the second view modally, as dictated by the views modalTransitionStyle. So there you could get back to the original by calling dismissViewControllerAnimated:completion: on the new ViewController.
On the iPhone you can use a UINavigationController in your storyboard to push and then pop the secondViewController.
As long as you are using the storyboard, you can set up the transition there and the perform it using - performSegueWithIdentifier:sender: from your button. Or for that matter you can connect the segue directly to your button in which case the transition will be performed without additional code.
I got an app with a storyboard and one window in .xib.
From the storyboard to the .xib i move in that way:
ShowDreamNIBController *detailViewController = [[ShowDreamNIBController alloc] initWithNibName:nil bundle:nil];
[self presentModalViewController:detailViewController animated:nil];
How can i move back from the .xib to the storyboard?
And one more question. Can i send some information when move to the .xib from storyboard? Like i do it throught segues in prepareForSegue method
UPD I got answer about closing .xib. Need answer about sending information.
you can get back to your storyboard by simply dismissing the modal view controller.
Like this:
- (IBAction)backPressed:(id)sender {
[self dismissModalViewControllerAnimated:YES];
}
You should put this method in your ShowDreamNIBController.
As for the second question, you can send back information to the view controller that presented the modal view controller by getting reference to it using delegation.
EDIT:
To "send information to the XIB" do you mean that you want to set information to the view controller that you want to present? If yes, than use this when you present the modal controller:
ShowDreamNIBController *detailViewController = [[ShowDreamNIBController alloc]initWithNibName:nil bundle:nil];
[detailViewController setSomething: something];
[detailViewController setAnotherThing: anotherThing];
[self presentModalViewController:detailViewController animated:nil];
I hope this helps.