I have a problem with switching views. I'm using a simulator with xcode 4.2
Storyboard contains:
NavigationController (initial view controller)
UIViewController which has relationship with the navigation controller
UIViewController (paired with my custom class: ViewEntryImageController) which hasn't got any relationship. Contains a button, a bottom toolbar with some toolbar button.
User come into the UIViewController, where he can see a ScrollView and in ScrollView some images.
Images has a gesture:
UITapGestureRecognizer *recognizer=[[UITapGestureRecognizer alloc]initWithTarget:self action:#selector(openEntryImage)];
[image addGestureRecognizer:recognizer];
[recognizer release];
The openEntryImage function:
(IBAction)openEntryImage
{
ViewEntryImageController *controller=[[ViewEntryImageController alloc]initWithNibName:nil bundle:nil];
controller.modalTransitionStyle=UIModalTransitionStyleCrossDissolve;
[self presentModalViewController:controller animated:YES];
[controller release];
}
When I try to tap the image, the openEntryImage works as well (the effect is correct), but I don't see my ViewEntryImageController view and my buttons, I'm only see a black window.
I try to put a NSLog line into the ViewEntryImageController viewDidLoad function, and it works, so what is the black window and where is my view controller?
When I try to use pushViewController, on the new view I found a navigation toolbar with a back button, but no other controls.
I tried another version, I created a UIViewController class, but now with a xib file. I used it instead of ViewEntryImageController and it works. Why?
I want to use this controller in storyboard too.
The ViewEntryImageController class by itself has no information about how to build the dialog. But you can instantiate your view controller on your own from the storyboard:
UIStoryboard *myStoryboard = [UIStoryboard storyboardWithName:#"StoryboardFileName" bundle:nil];
ViewEntryImageController *controller = (ViewEntryImageController *)[myStoryboard instantiateViewControllerWithIdentifier:#"ViewEntryImage"];
This assumes a storyboard name of StoryboardFileName and that the view entry image controller has an identifier of ViewEntryImage set in the view properties (Attributes inspector, section "View Controller").
Try it like this :
ViewEntryImageController *controller=[[ViewEntryImageController alloc]initWithNibName:#"ViewEntryImageController" bundle:nil];
If you don't use .nib names but rather use storyboards, it's a bit harder. Create a segue from the controller to the ViewEntryImageController controller by holding ctrl and dragging from one view to the other. Click this segue and give it an identifier.
Then use the [self performSegue:#"identifier"]; function to present the next view.
Related
I am developing one iPad application using storyboard. In my application i have 2 view controllers(First view controller and Modal view controller). In my first view controller I have one table view with cell containing one button. If I click the button in each cell I need to go to modal view controller. I connected the modal view controller and button by using a segue. Segue is working perfectly when style is modal but I need style Popover. When I am trying to change the segue style popover the storyboard error occurs and compilation failed comes. How can I solve this issue.
Follow the steps in the image. hope I will help you.
If the error is "Couldn't compile connection..." the problem is how XCode handles an outlet inside a dynamic table cell view.
I suggest you 2 alternatives:
1) The error doesn't come if you can use a "static" table view, in this way the table view must live inside a UITableViewController.
2) If you need a dynamic table, subclass the cell view and in your class (say MyUITableCellView) put an outlet:
#property (weak, nonatomic) IBOutlet UIButton *segueButton;
Then in your storyboard create an outlet from the prototype cell (of class MyUITableCellView) to the button inside the cell (do not create the segue in the storyboard, create only the destination view controller).
Then in the "cellForRowAtIndexPath" do the following:
MyUITableCellView *cell = (MyUITableCellView*)[tableView dequeueReusableCellWithIdentifier:#"MyCell"];
/* IMP: Here you should check if button has already this action (reused) */
[cell.segueButton addTarget:self action:#selector(showPopover:) forControlEvents:UIControlEventTouchUpInside];
and then add the action:
- (void)showPopover:(UIButton*)sender
{
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
UIViewController *secondVC = [storyboard instantiateViewControllerWithIdentifier:#"secondVC"]; // this is the storyboard id
self.popover = [[UIPopoverController alloc] initWithContentViewController:secondVC];
CGRect fromRect = [self.view convertRect:sender.frame fromView:sender.superview];
[self.popover presentPopoverFromRect:fromRect inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
}
Hope this has helped.
Have you included the <UIPopoverControllerDelegate> and implemented it? That's easy to forget the first times.
May be you might have not connected the Anchor, put UIView in your Viewcontroller view somewhere with background colour clear and set Anchor point of the Segue to that view.....
In Xcode 4.5 you can change views from a segue, But I want to programatically change views in Mainstoryboard. I Know in Xib. we use this method:
SecondViewController *Second = [[SecondViewController alloc] initWithNibName:nil bundle:nil];
[self presentModalViewController:Second animated:YES];
I want to change the view when the user clicks done in the textfield (This code detects if user clicks done):
-(IBAction)hidekeyboard {
[sender resignFirstResponder];
}
You create a segue in your storyboard that goes from the view that has the text field in question and goes to your SecondViewController. You have to assign an identifier to it (also in the storyboard, click on the line connecting the two view controllers), let's call it "segueToSecondViewController". Then, you can manually call the segue using:
[self.storyboard performSegueWithIdentifier:#"segueToSecondViewController" sender:self];
An alternative to segueing is to instantiate the viewController from the storyboard.
First you assign a Storyboard ID to the viewController in the storyboard.
Then you instantiate that viewController, and present it.
MBTagEditorViewController *tagEditor = [self.storyboard instantiateViewControllerWithIdentifier:#"TagEditor"];
[self presentModalViewController:tagEditor animated:YES];
in my iPad-app I am trying to present one of my views with a modal formsheet-style.
Here's some code:
-(void)present
{
SecondViewController *modal = [[SecondViewController alloc]init];
modal.modalPresentationStyle = UIModalPresentationStyleFormSheet;
[self presentModalViewController:modal animated:YES];
}
I am using Storyboard, and I have put stuff like a textView and toolbars in the view I'd like to show. I have set the right class in Identity Inspector, and in the class-files I have checked that it's the right view appearing with putting NSLog(#"Right view");
When calling the void present, a view is appearing, but only as a dark-white square. Nothing og my content from Storyboard is in it, I even tried changing the background color of the view and the textView to see if something was just outside the square, but the whole thing stayed white. It feels like it's not using the view I created in storyboard, but I have set it to the correct class, and the NSLog gets printed out when calling it. I have not connected the two views in any way in Storyboard, the SecondViewController is just floating around, so that might be the problem? The button that calls for -(void)present is created programmatically, so I can't ctrl+drag it to the button either.
Why is it showing an empty version of my class?
In the "Identity Inspector" set a "Storyboard ID" for your ViewController, and then present it like this:
-(void)present
{
SecondViewController *modal = [self.storyboard instantiateViewControllerWithIdentifier:#"myStoryboardID"];
modal.modalPresentationStyle = UIModalPresentationStyleFormSheet;
[self presentModalViewController:modal animated:YES];
}
And if you're using iOS6, presentModalViewController:animated: is deprecated, so use this:
-(void)present
{
SecondViewController *modal = [self.storyboard instantiateViewControllerWithIdentifier:#"myStoryboardID"];
modal.modalPresentationStyle = UIModalPresentationStyleFormSheet;
[self presentViewController:modal animated:YES completion:nil];
}
Your problem is that you're assuming the program will intrinsically know where to find the, already laid out, view for this controller when that's simply not how storyboards work. The code you list about will create a view controller, but without an associated view it will simply show as a black square.
There's a few ways to solve your dilemma:
Add the modal transition as a segue in the view controller, this would be the simplest way and is what iOS storyboards expect you to do.
Move the view from the storyboard to an external .xib and call the initWithNibName:bundle: method to load this as your view controller's view. This is the best solution if you just want to programmatically load the view.
Load the view from your storyboard programmatically with the instantiateViewControllerWithIdentifier: method, this is probably a bad idea as it goes against the design of storyboards.
I can elaborate on those if you want.
I just started to use Storyboard in Xcode. I have a starting view that has some buttons inside. Is there a way to load a special view when a button is clicked?
I only found this workaround:
-(IBAction)loadRegistration:(id)sender {
// load registration controller
UIStoryboard *storyboard = self.storyboard;
RegisterController *svc = [storyboard instantiateViewControllerWithIdentifier:#"RegisterController"];
[self presentViewController:svc animated:YES completion:nil];
}
You don't need any code to load a new view. You just control-drag from the button to the controller you want to present, and choose the segue type. If the controller with the button is in a navigation controller you can choose push or modal, if it's not, then you want to choose modal.
The way you did it seems ok. You can also connect the current View Controller to the one you want to present with a segue in the Interface Builder (ctrl + drag). When the button is tapped, you would call [self performSegueWithIdentifier:#"segue identifier"];. Of course, you set the id of the segue in the IB.
Even more simpler would be to connect the button with the new View Controller in IB (also ctrl+drag). This way you won't even need the IBAction.
I'm writing an app in which I add some buttons to my view (mainView) by code. When the user taps on this buttons I want a new view (resultView) to show.
I have both of this views in my storyboard, but since there is no button on my mainView that is in storyboard I can't link the mainView and resultView to each other using storyboard. Everything must be done by code.
I want to know how I can link my two views by code and define an identifier for that link.
Thanks,
To switch the view controller programmatically, you have to set a identifier in the attribute inspector at section "View Controller". After that, you can just use the value inside your code. Here i used the identifier "Menu".
UIStoryboard *storyboard = self.storyboard;
MenuTableViewController *mtvc = [storyboard instantiateViewControllerWithIdentifier:#"Menu"];
[self presentViewController: mtvc animated:YES completion:nil];
There is also a description in the documentation, just look for
Instantiating a Storyboard’s View Controller Programmatically
Give the segue between the two an identifier in the Attribute Inspector in IB, then on your button press event call [self performSegueWithIdentifier:#"MySegueIdentifier" sender:theButton]