Passing Data between Tab bar views

[k2c]

Hi all!

I have been trying to figure out how to pass data between tab bar views, but no success. Put name in the Textfield and push a button on firstview, however a label on secoundview doesn't update.
I found example codes for OS 4.3, but it doesn't work on OS 5 with storyboard... Here is a storyboard screenshot and codes. What's wrong with them? Please help!



FirstViewController.h

#import <UIKit/UIKit.h>
#import "SecondViewController.h"

@interface FirstViewController : UIViewController <UITextFieldDelegate> {
    
    NSString *fullName;
    
    
}
@property (nonatomic, retain) NSString *fullName;
@property (retain, nonatomic) IBOutlet UITextField *nameTextField;

- (IBAction)nextVCButton:(id)sender;


@end

FirstViewController.m

#import "FirstViewController.h"
#import "SecondViewController.h"

@implementation FirstViewController
@synthesize nameTextField, fullName;


- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Release any cached data, images, etc that aren't in use.
}

#pragma mark - View lifecycle

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
}

- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
}

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
}

- (void)viewWillDisappear:(BOOL)animated
{
	[super viewWillDisappear:animated];
}

- (void)viewDidDisappear:(BOOL)animated
{
	[super viewDidDisappear:animated];
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    // Return YES for supported orientations
    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}


- (IBAction)nextVCButton:(id)sender {
    
    SecondViewController *secView = [[SecondViewController alloc] initWithNibName:@"SecondViewController"
                                                                            bundle:nil];
    [secView setFullName:fullName];
    
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
   
    SecondViewController *ivc = [segue destinationViewController];
    ivc.fullName = fullName;
}

-(BOOL) textFieldShouldReturn:(UITextField *)textField {
    [textField resignFirstResponder];
    return YES;
    
}
-(BOOL)textFieldShouldEndEditing:(UITextField *)textField {
    self.fullName = [textField text];
    return YES;
    
}
@end

SecondViewConroller.h

#import <UIKit/UIKit.h>

@interface SecondViewController : UIViewController{
    
    NSString *fullName;
    UILabel *nameLabel;
    
}
@property (retain, nonatomic) NSString *fullName;
@property (retain, nonatomic) IBOutlet UILabel *nameLabel;

@end

SecondViewController.m

#import "SecondViewController.h"

@implementation SecondViewController
@synthesize nameLabel, fullName;
- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Release any cached data, images, etc that aren't in use.
}

#pragma mark - View lifecycle

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
    
    nameLabel.text = fullName;
    
}

- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}

- (void)viewWillAppear:(BOOL)animated
{
    
    
    [super viewWillAppear:animated];
  //  [self.nameLabel setText:fullName];
}

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
}

- (void)viewWillDisappear:(BOOL)animated
{
	[super viewWillDisappear:animated];
}

- (void)viewDidDisappear:(BOOL)animated
{
	[super viewDidDisappear:animated];
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    // Return YES for supported orientations
    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}

@end

[dessicant]

try using the MVC pattern. you have the views and the controllers, but no model. store the data in a separate model class, and then you can update or read it from both controllers while keeping them loosely coupled.

[k2c]

Thank you, dessicant! I'll try that.