CODEWITHSUNDEEP
iosstoryboardinitialization
Bhanu Prakash
Bhanu Prakash

Reputation: 1483

How to pass data between 2 view controllers in storyboards?

Let's assume we have 2 view controllers named ViewControllerA and ViewControllerB.

I have following intialization mechanism when I did not use the storyboard.

//ViewControllerA.h 

@interface ViewControllerA : UIViewController

@end

//ViewControllerA.m

@implementation ViewControllerA

- (IBAction)showViewControllerB:(id)sender {
    ViewControllerB *vcB = [[ViewControllerB alloc] initWithTitle:@"Test"];
    [self.navigationController pushViewController:vcB animated:YES];
 }

@end

//ViewControllerB.h 

@interface ViewControllerB : UIViewController

- (id)initWithTitle:(NSString *)title;

 @end

//ViewControllerB.m 

@interface ViewControllerB()

@property (nonatomic, retain) NSString *title;//Private scope.

@end

@implementation ViewControllerB

- (id)initWithTitle:(NSString *)title {
    self = [self init];
    if(self)
    {
        _title = title;
    }
    return self; 
}

@end

How can I achieve this using storyboards without declaring the title property in public scope (ViewControllerB.h)?

Thanks in advance.

Upvotes: 0

Views: 1044

Answers (3)

Sandeep Ahuja
Sandeep Ahuja

Reputation: 931

UIStoryboard *storyboard=self.storyboard;

ViewControllerB *vc=(ViewControllerB*)[storyboard instantiateViewControllerWithIdentifier:@"Scene_Id"];

[vc setTitle:@"your Text"];

[self.navigationController pushViewController:vc animated:YES];

Upvotes: 0

vikingosegundo
vikingosegundo

Reputation: 52237

You can use KVC to access the property.

- (IBAction)showViewControllerB:(id)sender 
{
    ViewControllerB *viewcontroller = [self.storyboard instantiateViewControllerWithIdentifier:@"ViewControllerB"]; // corresponding to the storyboard identifier
    [viewcontroller setValue:@"Hello World" forKey:@"title"];
    [self.navigationController pushViewController:viewcontroller animated:YES];
}

Upvotes: 2

pojo
pojo

Reputation: 6042

If you really need to keep the property private you could attach data to vcB object using objc_setAssociatedObject. Or you could save the property in the AppDelegate instead, and fetch it from there when ViewControllerB initializes.

Upvotes: 0

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