The new way of presenting a viewcontroller using the StoryBoard.
UIStoryboard* secondStoryboard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil];
UINavigationController* secondViewController = [secondStoryboard instantiateViewControllerWithIdentifier:#"Connect"];
[self presentViewController: secondViewController animated:YES completion: NULL];
The old way of presenting the controller Connect is like this
Connect *connect = [[[Connect alloc] initWithNibName:#"Connect" bundle:nil] autorelease];
[self presentViewController:connect animated:YES completion:NULL];
NSString *userid;
userid=#"123";
[connect setID:userid];
I want to call the setID function of the connect controller in the Storyboard way, how can I do that? Seems like I don't get an instance of Connect controller directly.
You should subclass the view controllers so that you can control what happens when users interact with it (unless your app can function on segues alone.)
In Xcode, File -> New -> File -> Cocoa Touch Class. Make a class like MyAwesomeViewController that subclasses (in your case) UINavigationController.
I like to make a custom method called NewVC in my custom view controller classes. It can do everything you list above, plus any custom setup:
+(MyAwesomeViewController *)NewVC {
UIStoryboard *storyboard = [UIStoryboard storyboardWithName: #"MyStoryboard" bundle: nil];
return [storyboard instantiateViewControllerWithIdentifier: #"MyAwesomeViewController"];
}
This way when you want to create a new one you can just call [MyAwesomeViewController NewVC] and it'll return a new view controller instance.
Why are you casting it as UINavigationController? Just do what you were doing.
Connect* connect = [secondStoryboard instantiateViewControllerWithIdentifier:#"Connect"];
Related
i build two project
Story Board -> Login Screen
Programmatically -> UITabBarController
both are different Projects but managed With MVC structure
now i want to connect StoryBoard Button with Programmatically build UITabBarController
Please Help me to solve this Problem.
To create a view controller:
UIViewController * vc = [[UIViewController alloc] init];
To call a view controller (must be called from within another viewcontroller):
[self presentViewController:vc animated:YES completion:nil];
For one, use nil rather than null.
Loading a view controller from the storyboard:
NSString * storyboardName = #"MainStoryboard";
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:storyboardName bundle: nil];
UIViewController * vc = [storyboard instantiateViewControllerWithIdentifier:#"IDENTIFIER_OF_YOUR_VIEWCONTROLLER"];
[self 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 got a source code for an existing app. throughout the app the developer didn't use storyboard for the user interface but rather he used interface builder xib files. As a new developer, i don't know how to develop iOS apps in xcode using xib files for viewcontrollers, i learnt the storyboard way. Now I want to add more screens to the apps source code, i created a new storyboard file to define my new screens, how do I navigate to the entry point of this new storyboard from a button action i defined in one of the xib files so that i can easily implement my features.
while searching i got some suggestions like this one
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"newStoryboard_iPhone" bundle:nil];
MyNewViewController *myVC = (MyNewViewController *)[storyboard instantiateViewControllerWithIdentifier:#"myViewCont"];
but i dont think i understand how to implement this even if this can be in a button IBAction method. and besides subsequent navigations would be segues through the view controllers i define in the new storyboard
It's right suggestion.
You should get storyboard object by its name. Then you should create your viewController using [storyboard instantiateViewControllerWithIdentifier:#"..."];
Then you may navigate to your new VC using appropriate navigation method. For example:
[self.navigationController pushViewController:vc animated:YES]
ViewController identifier you should set in Interface Builder under section "Identity Inspector" in field "Storyboard ID".
That code you should place in IBAction method. But better would be to extract it in separate method. Something like this:
- (IBAction)buttonPressed:(UIButton *)sender {
[self navigateToMyNewViewController];
}
- (void)navigateToMyNewViewController {
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"myNewStoryboard" bundle:nil];
MyNewViewController *myNewVC = (MyNewViewController *)[storyboard instantiateViewControllerWithIdentifier:#"MyNewViewController"];
[self.navigationController pushViewController:myNewVC animated:YES];
}
Navigation from MyNewViewController your can implement as you want. It may be segues.
MyNewViewController *myVC = [self.storyboard instantiateViewControllerWithIdentifier:#"YOUR_VC_NAME_HERE"];
This will instantiate your ViewController, from here you can present it like so
[self presentViewController:myVC animated:YES completion:nil]
The image shows where you set the storyboard name that you're referring to
Try This it's working for me ,
Use below line of code :
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main"bundle:nil];
LoginViewController *loginVC = (LoginViewController*)[storyboard instantiateViewControllerWithIdentifier:#"LoginViewController"];
[self.navigationController pushViewController:loginVC animated:YES];
We need to set storyboard id as per mention in below,
you can navigate one storyboard to another storybord:
first you import your viewcontroller class to appdelegate.h
AppDelegate *appDelegateTemp = [[UIApplication sharedApplication]delegate];
appDelegateTemp.window.rootViewController = [[UIStoryboard storyboardWithName:#"storyboard_name" bundle:[NSBundle mainBundle]] instantiateInitialViewController];
Like the way you use storyboard, use
MainViewController *mainVC = [[MainViewController alloc] initWithNibName:#"MainViewController" bundle:nil]
[self.navigationController pushViewController:mainVC animated:YES];
I have a custom UIVieController class that it's not included in any StoryBoard, I need to call from this class an UIViewController that is included in a StoryBoard, I tried many ways to do this but it doesn't work, always get a NSException because when I try to instance the UIViewController of the StoryBoard and get a nil object.
I don't know why it's happening this, I really appreciate any help with this.
Thank you.
Just to clarify in this code I omitted the pushing of the view to the UINavigationController.
I tried this.
+(void)loadSocialMediaAppSegue:(AXISAppDelegate*)delegate withName:(NSString*)segueId{
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main_iPhone" bundle:nil];
AXISWebViewViewController *axisWebView = [storyboard instantiateViewControllerWithIdentifier:segueId];
}
and this
+(void)loadSocialMediaAppSegue:(AXISAppDelegate*)delegate withName:(NSString*)segueId{
AXISWebViewViewController *axisWebView = [delegate.window.rootViewController.storyboard instantiateViewControllerWithIdentifier:segueId];
}
Ok the first thing you need to do is to add a identifier to you view controller at Storyboard, you can do that opening the Storyboard's Identity Inspector and fill the storyboard id field.
Now you are able to call this UIViewController from any place you want like this:
UIStoryboard *sb = [UIStoryboard storyboardWithName:#"the name of your storyboard" bundle:nil];
UIViewController *vc = [sb instantiateViewControllerWithIdentifier:#"the id of your view controller"];
I hope this can help you.
Please post the code you are using to instantiate the VC from the Storyboard.
In general:
To instantiate a View Controller from StoryBoard:
MyViewController *MyVC = [[UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil] instantiateViewControllerWithIdentifier:#"MyViewController"];
Make sure you set the Storyboard ID and Restoration ID and Class name to "MyViewController" or whatever you want to call it and use that as the parameter for instantiateViewControllerWithIdentifier:
Then if you are in a navigation controller, simply push the instantiated view controller onto the navigation stack:
[self.navigationController pushViewController:MyVC animated:YES];
or present it modally:
[self presentViewController:MyVC animated:YES completion:nil];
The code about present another independent storyboard as follows:
- (IBAction)action:(id)sender {
UIStoryboard *secondStoryboard = [UIStoryboard storyboardWithName:#"SecondStoryboard" bundle:nil];
UIViewController *firstVC = [secondStoryboard instantiateViewControllerWithIdentifier:#"22"];
[self.navigationController presentViewController:firstVC animated:YES completion:nil];
}
If my storyboard like follow contain a UITabBarController the Pesentbutton with function -(IBAction)action:(id)sender; can't present another independent storyboard.
If my storyboard like follow contain a UINavigationController the Pesentbutton with function -(IBAction)action:(id)sender; presents another independent storyboard as expected.
Who can tell me the reason?More thanks!
Because in the first case self.navigationController is nil... Since no navigation controller is present. Try presenting from self or self.tabBarController
I don't know if this is possible or not but I wrote a project using xibs and want to modally switch to a storyboard project.
I know that to switch VC's you do something like
NewViewController *NewVC = [[NewViewController alloc] init];
[self presentModalViewController:NewVC animated:YES];
upon clicking a button, that I'll call "switch"
There is another project using solely storyboards that I want to call using "switch"
How do I go about doing this? Is it possible to do this?
Yes it is possible. You can do something like this:
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"YourStoryboardName" bundle:nil];
MainMenuViewController *mainmenuvc = [storyboard instantiateViewControllerWithIdentifier:#"mainMenuViewController"];
[self.navigationController pushViewController:mainmenuvc animated:YES];
EDIT
If I understand your comment, you want to change the root view controller. You can do so by:
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"RVCStoryboard" bundle:nil];
MainMenuViewController *mainmenuvc = [storyboard instantiateViewControllerWithIdentifier:#"mainMenuViewController"];
[[UIApplication sharedApplication].delegate].window.rootViewController = mainmenuvc;
Please note that for this to work, in your RVCStoryboard you have to select the viewcontroller you are trying to load, and assign a name to it so that the instantiateViewControllerWithIdentifier: method will work. Check the attached image, the field "Storyboard ID":