iOS - Passing variable to view controller
SetTeamsViewController *vc = [[SetTeamsViewController alloc] init];
vc.myLabel.text = self.teamCount;
[self presentModalViewController:vc animated:YES];
[vc release];

SetTeamsViewController *vc = [[SetTeamsViewController alloc] initWithTeamCount:self.teamCount];

- (id)initWithTeamCount:(int)teamCount {
    self = [super initWithNibName:nil bundle:nil];
    if (self) {
        // Custom initialization
        self.teamCountLabel.text = [NSString stringWithFormat:@"%d",teamCount];
    }
    return self;
}

SetTeamsViewController *vc = [[SetTeamsViewController alloc] initWithTeamCount:teamCount];

- (id)initWithTeamCount:(int)teamCount {
    self = [super init];
    if (self) {
        // Custom initialization
       str = [NSString stringWithFormat:@"%d",teamCount];
    }
    return self;
 }

self.teamCountLabel.text = str;

[super viewDidLoad];

SetTeamsViewController *vc = [[SetTeamsViewController alloc] init];
    [self presentModalViewController:vc animated:YES];
    vc.myLabel.text = self.teamCount;
    [vc release];

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
{
    // please make your control on XIB set these IBOutlet's
    //I'm not showing how to connect these with XIB

    IBOutlet UILabel *lblView;
    IBOutlet UIButton *buttonGo;
}
//this is method which will push the view
-(IBAction)buttonGoClickAction:(id)sender;

-(IBAction)buttonGoClickAction:(id)sender
{
    SecondViewController *secondViewObject = [[SecondViewController alloc]initWithNibName:@"SecondViewController" bundle:nil];
    //before pushing give the text
    secondViewObject.string = lblView.text;
    [self.navigationController pushViewController:secondViewObject animated:YES];
}

#import <UIKit/UIKit.h>

@interface SecondViewController : UIViewController
{
    IBOutlet UILabel *labelView;
    NSString *string;
}
//set the string property
@property(nonatomic, retain) NSString *string;

@end

#import "SecondViewController.h"

 @implementation SecondViewController
 //synthesize string here
 @synthesize string;

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

    //Here you will get the string
    labelView.text = string;
}

// view1.h

@interface view1 : UIViewController {
    NSString *passingVariable;
}

@property (nonatomic, strong) NSString *passingVariable;

@end

// view1.m

@implementation view1

@synthesize passingVariable;

// the rest of the implementation

@end

// view2.m

#import "view1.h"

@implementation view2

-(IBAction)changeview
{
    view1 *myview = [[view1 alloc] init];

    myview.passingVariable = [NSString stringWithString:@"Hello Variable"];

    [self.navigationController pushViewController:myview animated:YES];
}

@end