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I have created a Single View Application, It works fine, but now I have added a new view and on a button click, wants the new view to appear.
This is the code for click action,
SettingsViewController *settingsViewController = [[SettingsViewController alloc] initWithNibName:#"SettingsViewController" bundle:[NSBundle mainBundle]];
[self.navigationController pushViewController:settingsViewController animated:YES];
The Default ViewController now looks like this in .h file
#interface ViewController : UIViewController<UIImagePickerControllerDelegate, UINavigationControllerDelegate>
The SettingsViewController.m has a default
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{}
Can I add another view to "Single View Application" like this or should I chose another template for my project ?
Thanks.
You need to create a UINavigationController in your AppDelegate. Then make your ViewController the rootViewController of the UINavigationController. Then you will be able to push and pop views.
Here is the code to create the rootViewController where mainNavigationController is the UINavigationController in your AppDelegate:
ViewController *vc = [[ViewController alloc] init];
mainNavigationController = [[UINavigationController alloc] initWithRootViewController:vc];
Once you have the ViewController set up as the rootViewController it will conform to the UINavigationController push and pop methods to create a stack of UIViewControllers.
That is fine. The single view application template is just a barebones template. You can add any type of navigation you like to it.
In iOS 5, switching between views works a bit different i think,
I have created a few apps with the above mentioned code for switching views.
But now, I have to write it like this to work:
SettingsViewController *settingsViewController = [[SettingsViewController alloc] initWithNibName:#"SettingsViewController" bundle:[NSBundle mainBundle]];
[self presentModalViewController:settingsViewController animated:YES];
Related
This really should work. This is one of the simplest things to achieve in iOS and for some reason it's just not working.
I have two view controllers in my storyboard. One is InitViewController and the other is ViewController, with a storyboard ID of Init and ViewOne respectively. I have a button on InitViewController that is running code to switch the views. The code is running properly but nothing happens despite that fact. Here is the code:
-(IBAction)NextPage:(id)sender{
ViewController *wc = [[ViewController alloc]
initWithNibName:#"ViewOne"
bundle:nil];
[self.navigationController pushViewController:wc animated:YES];
}
I imported ViewController.h, I just don't know why this isn't working.
initWithNibName: is for view controllers that you create in .xib files, not storyboards. To create a view controller from a storyboard use -[UIStoryboard instantiateViewControllerWithIdentifier:]
ViewController *wc = [self.storyboard instantiateViewControllerWithIdentifier:#"ViewOne"];
[self.navigationController pushViewController:wc animated:YES];
You need a NavigationController - try to log self.navigationcontroller and you will see is null
In your storyboard add a UINavigationController set it as entrypoint, set InitViewController as root view controller and then you can use:
ViewController *wc = [self.storyboard instantiateViewControllerWithIdentifier:#"ViewOne"];
[self.navigationController pushViewController:wc animated:YES];
I'm new to iOS development.
I have a ViewController ViewController with a button. When the user presses that button, I want to switch the view to RegisterViewController.
ViewController.m contains following code:
#import "ViewController.h"
#import "RegisterViewController.h"
#interface ViewController ()
#end
#implementation ViewController
#synthesize registerViewButton;
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)registerViewButtonClick:(id)sender {
NSLog(#"registerViewButtonClick called");
RegisterViewController* controller = [[RegisterViewController alloc] init];
[self.navigationController pushViewController:controller animated:YES];
}
#end
According the debug output, method registerViewButtonClick is actually called, when I press the button.
But the view represented by RegisterViewController doesn't appear.
The code of the application is available here.
What do I need to change in order for the RegisterViewController's view to become visible, when the button is pressed?
I ran your code and found that there is no navigation controller implemented in your code but you are trying to push the registerViewController. Try to present the viewcontroller like below:
[self presentViewController:controller animated:YES completion:nil];
instead of
[self.navigationController pushViewController:controller animated:YES];
The pushViewController works only when there is a UINavigationController. As per the documentation, The UINavigationController class implements a specialized view controller that manages the navigation of hierarchical content. Since, there is no UINavigationController in your code (self.navigationController is nil in this case), nothing happens when you try to push the viewController.
UINavigationController also comes handy when you want to maintain a stack of viewControllers wherein you can push or pop as per the need. This also gives you 'Back' button automatically. If your need is just to present a viewcontroller, then presentViewController: can be the right option.
If you want to present then no need of UINavigationalController.
But for pushing UINavigationalController is must .
In Storyboard, you have to add one UINavigationalController.
In Button Actions initialise the VC correctly with nib Name.
RegisterViewController* controller = [[RegisterViewController alloc] initWithNibName:#"RegisterViewController" bundle:nil];
[self.navigationController pushViewController:controller animated:YES];
You might need to initialize the UIViewController with the nib name..
like this
RegisterViewController* controller = [[RegisterViewController alloc] initWithNibName:#"RegisterViewController" bundle:nil];
RegisterViewController *news=[[RegisterViewController alloc] initWithNibName:#"RegisterViewController" bundle:nil];
[self.navigationController pushViewController:news animated:YES];
[news release];
If you are using storyboards then you need to get your view controller from the storyboard like
RegisterViewController *viewController = (RegisterViewController*)[[UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil] instantiateViewControllerWithIdentifier:#"vc-identifier"];
Replace vc-identifier with whatever you have given as the identifier in storyboards and replace MainStoryboard with the name of your storybaord.
then pass it into your navigation controller like you are already doing, that is as long as your navigation controller isn't nil
[self.navigationController pushViewController:controller animated:YES];
Just been told that you aren't using storyboards, I was unable to download your link because of my location so I gave a solution with storyboards. My recommendation would be to move to using storyboards.
Will leave this here as it may help others who are having the same problem but are using storyboards
How do I add the back button to a navigation bar? I know there are some related questions but none of them helped. I'm not using storyboard nor did I start with the Master Detail template. Is there a setting to do this? or do you add it by code? if so what code do I need? Any help is appreciated! THANKS!
The back button will appear by default if you use a navigationController correctly. The ViewControllers should be this
NavigationController > FirstViewController > SecondViewController
You will need to create navigationController and instantiate with firstVC as the root. From firstVC you can push secondVC and the back button will be there.
The following placed into appDelegate application didFinishLaunchingWithOptions: will load firstVC initially. Place this after you initialize the window...
UIViewController *firstVC = [[UIViewController alloc] initWithNibName:#"firstVC" bundle:nil];
// any setupup of firstVC
UINavigationController *navCon = [[UINavigationController alloc] initWithRootViewController:firstVC];
[self.window setRootViewController:navCon];
Then in your firstVC class if you want to push secondVC
in firstVC.m:
UIViewController *secondVC = [[UIViewController alloc] init];
[self.navigationController pushViewController:secondVC animated:YES];
You don't need to explicitly add a back button. The button will be added automatically when you push controllers into a UINavigationController. That is, a call as:
[navigator pushViewController: controller animated: ...];
creates a back button.
Hi I'm using the following library in my project https://github.com/firebaseco/FireUIPagedScrollView I've added a few view controllers as pages. My issue now is that when a user selects a button on one of my view controllers loaded as a page the page is simply replaced with my new view controller rather than the view controller holding the pages. Any one know how I can move to a completely new view controller when something is pressed on one of the pages?
The code I'm using to load my other view pager from the page is below
WebViewController *dvController = [[WebViewController alloc] initWithNibName:#"WebViewController" bundle:[NSBundle mainBundle]];
dvController.url = url;
UINavigationController *nc = [[UINavigationController alloc] initWithRootViewController:dvController];
nc.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
[self presentModalViewController:nc animated:YES];
Any help would be greatly appreciated
Simple solution ended up being create a property in the page and set it in the ViewController that has pages added to it
In Page.h
#property (nonatomic, retain) UINavigationController *navController;
In the Page Holding View Controller set the property equal to the holders navigationController
Page *pageVC = [[Page alloc] initWithNibName:#"Page" bundle:nil];
pageVC.navController = self.navigationController;
Then in Page.m when I wanted to push a new View Controller simply used the now set property when pushing the new View Controller
#synthesize navController
...
NewViewController *dvController = [[NewViewController alloc] initWithNibName:#"NewViewController" bundle:[NSBundle mainBundle]];
[self.navController pushViewController:dvController animated:NO];
I've been pulling my hair out trying to get a basic NavigationController working that will allow me to switch back and forth between views easily. I feel like I'm making progress, but I'm clearly missing something critical. I now have my template app pushing views, but only by adding the initWithNibName pointing to the target NIB. Attempting to add any functionality to these secondary views causes the app to crash with a SIGABRT error. I can't imagine this is right.. If I simply have a plain NIB, the switch works fine. The only thing I've added to the secondViewcontroller is a label and a button to populate the label with some garbage text. Yet the instant I hit the switch button to shift push this view i get the SIGABRT. I'd like to be able to put functionality within the different view controllers. I feel like i'm so close, but tis is so aggravating. Can anyone point out where i've gone wrong?
#import "mainViewController.h"
#implementation mainViewController
-(void)switchView {
UIViewController *secondViewController = [[UIViewController alloc] initWithNibName:#"secondViewController" bundle:nil];
secondViewController.title = #"My First View";
[self.navigationController pushViewController:secondViewController animated:YES];
[secondViewController release];
}
-(void)switchViewTwo {
UIViewController *thirdViewController = [[UIViewController alloc] initWithNibName:#"thirdViewController" bundle:nil];
thirdViewController.title = #"My second View";
thirdViewController.view.backgroundColor = [UIColor redColor];
[self.navigationController pushViewController:thirdViewController animated:YES];
[thirdViewController release];
}
Instead of
UIViewController *secondViewController = [[UIViewController alloc] initWithNibName:#"secondViewController" bundle:nil];
Put this:
MySecondViewController *secondViewController = [[MySecondViewController alloc] initWithNibName:#"secondViewController" bundle:nil];
My MySecondViewController should be the name of your UIViewController, also check that the XIB's name is really called secondViewController. Finally:
Go to your XIB
Select the File's Owner file.
Select the 3rd tab in the inspector.
Check the name of the class. It should be MySecondViewController instead of UIViewController.