i have one problem i hope someone can help, im try to create an app like catalog, in the first view i have a table view with "x" number of items, this tableview is only an image of product, and then when you click on cell (image) the app send to you to another view, that view is the detail of the item.
worth mentioning that in the view controller is the table where I create a NSMutableArray with all products, then when you go to open the following view I do using the following code:
viewController cakeViewController * = [self.storyboard instantiateViewControllerWithIdentifier: # "ViewController"];
UINavigationController * navigationController = [[UINavigationController alloc] initWithRootViewController: viewController];
viewController.selectCake = [_cake objectAtIndex: indexPath.row];
[self presentViewController: navigationController animated: YES completion: nil];
and works but in the second view i try to put a suggestion cake with img and when click image refresh or reload the view but with the data of the suggested cake.
thanks a lot!
Related
I have a UINavigationController which points to a UITableViewController (a list of items) where there is a segue from a cell to another UITableViewController (a screen to edit an item).
On first run of the application, I'd like to skip the first list and immediately go to the second screen, to edit a new item.
The problem is I need to pass the first UITableViewController, as I need to be able to go back to that one (or is there a way to set the controller the back button is pointing to?).
Things I've tried and failed:
Set a boolean shouldPresentNewItem on the UINavigationController and in the viewDidLoad if it is set to true, present the first UITableViewController, also setting a boolean so I can go to the edit screen.
Using self.navigationController!.popToViewController(arr[index] as UIViewController, animated: true) in the UINavigationControllers viewDidLoad. This gave an error as self.navigationController was nil. (I don't get why this happens)
How can this be done?
In navigation controller set some boolean indicating that you're going to show edit screen and in viewDidLoad just push edit view controller without animation:
- (void) viewDidLoad {
[super viewDidLoad];
if (self.presentEditScreen) {
self.presentEditScreen = NO;
EditViewController *e = [[DetailViewController alloc] init];
[self pushViewController:e animated:NO];
}
}
simplest way will be. just push from second view to first view
firstViewController *objFirstViewController = [[firstViewController alloc]initWithNibName:#"firstViewController" bundle:nil];
[self.navigationController pushViewController:objFirstViewController animated:No];
I'm using SWRevealViewController to build a sliding menu. Before accessing the menu, a login view is displayed to allow the user login. Now i want to let the user disconnect and display the login view again. My question is how to pop the SWRevealViewController.
code that provides access to application after login is:
MainViewController *vMainMenu = [[MainViewController alloc] initWithNibName:#"MainViewController" bundle:nil];
vMainMenu.strURL = URL;
LeftMenu *vLeftMenu = [[LeftMenu alloc] initWithNibName:#"LeftMenu" bundle:nil];
UINavigationController *principalNavController = [[UINavigationController alloc] initWithRootViewController:vMainMenu];
UINavigationController *rearNavController = [[UINavigationController alloc] initWithRootViewController:vLeftMenu];
SWRevealViewController *mainRevealController = [[SWRevealViewController alloc] initWithRearViewController:rearNavController frontViewController:principalNavController];
mainRevealController.delegate = self;
self.viewController = mainRevealController;
principalNavController.navigationBar.hidden = YES;
rearNavController.navigationBar.hidden = YES;
self.window.rootViewController = self.viewController;
This solution is not working:
[self.revealViewController.navigationController popViewControllerAnimated:YES];
Splash *vSplash = [[Splash alloc] initWithNibName:#"Splash" bundle:nil];
[self.navigationController pushViewController:vSplash animated:YES];
Can you help me please
Thank you.
You can't go back to your LoginViewController by pop. You can add PresentViewController without animation to do this.
Splash *vSplash = [[Splash alloc] initWithNibName:#"Splash" bundle:nil];
[self presentViewController: vSplash animated:NO completion:nil];
I had the same issue. I have implemented several storyboards.
let storyboard = UIStoryboard(name: "Login", bundle: nil)
let startcontroller = storyboard.instantiateViewControllerWithIdentifier("LoginVC") as UIViewController
window?.rootViewController = startcontroller
With this snippet you can access the right View Controller.
You can use an "Unwinding Segue". The unwinding segue is like a regular segue which goes back instead of forward.
First, go to the Login View Controller and add the following method:
-(IBAction)unwindToLoginScreen:(UIStoryboardSegue *)segue {
}
The method may be empty and it can have any name; it is good to use descriptive names because you might have many unwind segues on your code and it will be useful to be able to distinguish between them.
This unwind method will act as a global constant that will be visible to all View Controllers on the storyboard.
Now, on each view controller that should be able to return to the Login Screen you create a Unwind Segue. You can do this on the Storyboard:
Select the View Controller you want; on the top bar you should see three buttons, one representing the View Controller, another representing the First Responder and another representing an Exit.
Ctrl+Drag from the View Controller button to the Exit button. A context menu will appear and will list all visible unwind methods you created on your storyboard.
On the Document Outline, an "Unwind segue" will appear for the view controller. You can add an identifier to that segue (such as "Login" in your case). Then you call performSegueWithIdentifier. Select the one you created on your Login view controller.
Doing this, the complete stack between the view controller and the login view controller will be unwinded. That is, all view controllers stacked above the Login view controller will be popped.
You can also use prepareForSegue for the unwind segues the same way you would use them for regular segues. And you can add code to the -(IBAction) method if you want to do something as a result to the segue.
I have my first NavigationController set up with root viewcontroller - PhotoViewController, It's a collectionView with grid of images. When image is selected I wan't to present a second navigationController with root controller - DetailViewControler.
My first navigationController is set up in appDelegate. I really don't understand how and where should I create the second. I'm not using IB. At the moment I have this in my DetailViewcontroller viewDidLoad:
DetailViewController *detailView = [[DetailViewController alloc] init];
self.detailController = [[UINavigationController alloc] initWithRootViewController:detailView];
But when i'm trying to push a new controller, nothing happens. I guess that my code is in wrong place.
When I try to present second controller modally from my PhotoViewController, I have an error(trying to present nil viewController).
The common idea is to have a single navigation VC that contains -- and lets you navigate between -- other VCs. In the situation you describe, you wouldn't create another navigation VC. Instead, create just the detail VC and push that onto the existing navigation VC...
// assuming self is a view controller contained by a navigation controller
self.detailController = [[DetailViewController alloc] init];
[self.navigationController pushViewController:self.detailController animated:YES];
Use a parent view controller as your initial view controller and add the navigation controllers as children, then transition between them. See this blogpost that I wrote: http://sketchytech.blogspot.co.uk/2012/09/container-view-controllers-parent-view.html
So in my universal app I have a section where a person can look at an existing list of notes from our system (retrieved through a simple web service) and then also create a new note if they want. So for the iphone it's pretty simple layout, a TableViewController for displaying the list with a "Add" button on the NavigationBar that presents the modalview for adding the new item. On the iPad though, the same layout has a lot of wasted space so I opted to go with the popOver method to show the list in a popOver and then let them add from there. My problem is that when the user clicks on the Add button within the PopOver view, the modal view comes up full screen instead of just coming up within the popover view. Here's the code I have so far:
-(void) AddButtonPressed:(id)sender {
NewNoteVC *newNote = [[[NewNoteVC alloc] initWithNibName:#"NewNoteVC" bundle:nil] autorelease];
newNote.defaultClientID = defaultClientID;
UINavigationController *navCon = [[[UINavigationController alloc] initWithRootViewController:newNote] autorelease];
if ([isPopOver isEqualToString:#"YES"]) {
[navCon setModalInPopover:YES];
[self.navigationController setModalInPopover:YES];
[self.navigationController presentModalViewController:navCon animated:YES];
}
else {
[self.navigationController presentModalViewController:navCon animated:YES];
}
}
The "isPopOver" string is just a placeholder sent from the previous screen that called this TableView (I know I can switch this to a boolean for better performance I just put this together real quick to try it out). I know I messed up somewhere, I just don't know what setting I need to get this working correctly.
You need to define the view controller's modalPresentationStyle to be "current context".
navCon.modalPresentationStyle = UIModalPresentationCurrentContext;
This will result in modal view controller filling the popover like the popover's root controller.
Try using the presentViewController:animated:completion: instead of presentModalViewController:animated: and set self.navigationController.definesPresentationContext = YES
Well I have read those posts and tutorials but they made me more confused:
url 1
quest 1
quest 2
What i want is to do this:
At the beginning my app, has a table view. when I press a row, it should take me to another view which has tabs.
What I did so far was these:
1) Created a navigation controller , and there is my tableview. When I press a row, a single view opens. In that view (with its own .xib file) I added tab bars items.
You can see pictures here:
But now, I don't know how to make it when pressing a tab bar item, to open a new view. I am trying to embed my view in a controller but I cannot.
2) Then I tried this:
Having my navigation controller as before and I added in storyboard a tabbar controller like in that picture:
But I cannot connect them. My first view is class "SkiCenter" and code I am using is:
SkiCenter *myDetViewCont = [[SkiCenter alloc] initWithNibName:#"SkiCenter" bundle:[NSBundle mainBundle]];
myDetViewCont.ski_center=[centers objectAtIndex:indexPath.row];
[self.navigationController pushViewController:myDetViewCont animated:YES]; // "Pushing the controller on the screen"
[myDetViewCont release]; // releasing controller from the memory
myDetViewCont = nil;
and I get SIGBRT that says something about .nib file for "SkiCenter".
Can you suggest a sollution in either 1 or 2?
just to make it more clear:
Solution 1:
pressing the row gets me to a single uiview named skicentermain. I have added several tabbaritems but I do not know how to make them open new views.
Sollution 2:
Inserted a tabbar controller. Its first tab is SkiCenter. But when pressing the row, I get a sigbart error. it says something about the nib file of SkiCenter.
If you decide to use storyboard you can simply put an identifier to any view controller from attributes inspector and then instantiate it with its id.
UIStoryboard * storyBoard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil];
[[self navigationController] pushViewController:[storyBoard instantiateViewControllerWithIdentifier:#"ViewControllerID"] animated:YES];
It looks like your declaring your *myDetViewCont incorrectly. You called your nib SkiCenterMain, not SkiCenter. Also, what exactly is on SkiCenterMain? Is that a UITabBarController?
//SkiCenter *myDetViewCont = [[SkiCenter alloc] initWithNibName:#"SkiCenter" bundle:[NSBundle mainBundle]];
SkiCenter *myDetViewCont = [[SkiCenter alloc] initWithNibName:#"SkiCenterMain" bundle:[NSBundle mainBundle]];