How can i pass string value from one viewcontroller to another without xib in xcode?

Question

How can i pass one string variable from my firstviewcontroller class to secondviewcontroller class? here secondviewcontroller class have only ".m" and ".h" files; currently in secondviewcontroller ".h" file

@property(nonatomic,retain) NSString *value2;

in secondviewcontroller.m file i am using

NSString *str=value2;
NSLog(@"%@",str);

// it prints a null

in my firstviewcontroller.m file am assigning like

secondviewcontroller *second=[[secondviewcontroller alloc]init];
second.value2=value1;

value1 is declared in firstviewcontroller as string ..please tell me one solution

Did you synthesize the property in the SecondViewController.m — Manu, Mar 16 '13 at 09:27
check this out - http://stackoverflow.com/questions/12652312/passing-data-between-views and http://iphonedevsdk.com/forum/iphone-sdk-development/54859-sharing-data-between-view-controllers-and-other-objects-link-fixed.html — Vlad Z., Mar 16 '13 at 12:48

βhargavḯ · Accepted Answer · 2013-03-16T10:05:06.067

4

Try to assign your value1 like.

firstviewcontroller.m

NSString *value1 = [[NSString alloc] initWithString:@"my value1"];

and then assign vc.value2 = value1;

edited Mar 16 '13 at 10:05

answered Mar 16 '13 at 09:51

βhargavḯ

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:let me try but remember i dnt have .xib for secondview conrtroller – Naveen Mar 16 '13 at 10:03
I am asking about value1 which is inside firstviewcontroller right ? so try this way for value1. – βhargavḯ Mar 16 '13 at 10:04
its not working with that methode – Naveen Mar 16 '13 at 10:36

iPatel · Answer 2 · 2013-03-16T10:23:46.297

1

Generally logic is :

NOTE : Data type of both value1 and value2 must be same.

First put in secondVC.h file

NSString *value2;

give its @property and @synthesize properly.

In your firstVC.m

NSString *value1 = @"this is string"; // in your case check it is, proper or not (i mean  nil/not nill)??

and at create Object of secondVC

secondVC *vc = [[secondVC alloc] init];
vc.value2 = value1;
[self presentModalViewController:vc animated:YES];

and write in secondVC.m file

NSLog(@"%@",value2);

and check out put in console.

edited Mar 16 '13 at 10:23

answered Mar 16 '13 at 09:35

iPatel

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@Naveen- then i thinks problem in your value1 otherwise this logic is true :) – iPatel Mar 16 '13 at 09:42
iPatel value 1 is printing yar..i dont knw y value2 is not prinitng – Naveen Mar 16 '13 at 09:46
what is value 1 displed???? – iPatel Mar 16 '13 at 09:51
my string,i tried all abouve methode but its not working – Naveen Mar 16 '13 at 10:54

score 0 · Answer 3 · answered Mar 16 '13 at 09:27

0

Most probable reason appears here is you have not synthesized the property in second view controller's .m file. Unless you synthesize the property it will not initiate and will be nil. Please post the entire code.

You need to declare a variable for the property and synthesize the property so that it assigns the value to the variable.

Let me know if it is not so.

answered Mar 16 '13 at 09:27

Murtuza Kabul

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i syntheszd ..itnot the problem – Naveen Mar 16 '13 at 09:35

score 0 · Answer 4 · answered Mar 16 '13 at 09:34

0

synthesized your propery and used it with self. value2.

Hope this will solve your problem.

All the best !!!

answered Mar 16 '13 at 09:34

Yashesh

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meth · Answer 5 · 2013-03-16T11:26:05.353

ok this is my First View Controller it has xib file

.h

#import "SecondViewController.h"
@interface ViewController : UIViewController

@property(strong, nonatomic) SecondViewController * svc;

@end

and second with no xib.

.h

#import <UIKit/UIKit.h>
@class ViewController;

    @interface SecondViewController : UIViewController

    @property (strong, nonatomic) ViewController * vc;

    @property (strong, nonatomic) NSMutableString * passValue;


    @end

in implementation

first .m is viewDidLoad

- (void)viewDidLoad
{
     NSLog(@"viewDidLoad");

    [super viewDidLoad];

    svc=[[SecondViewController alloc] init];

    svc.vc=self;

    NSString * str= svc.passValue;

    NSLog(@"%@",str);

    svc.passValue =[@"StringFromFirstView" mutableCopy];

    [svc viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.
}

and in Second .m

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        passValue = @"mySValue";
        // Custom initialization
    }
    return self;
}


- (void)viewDidLoad
{

    [super viewDidLoad];

    NSLog(@"passValue %@",passValue);

    // Do any additional setup after loading the view.
}

and when i Run the code

    2013-03-16 13:11:40.178 ali[787:c07] viewDidLoad
2013-03-16 13:11:40.179 ali[787:c07] mySValue
2013-03-16 13:11:40.180 ali[787:c07] passValue StringFromFirstView

How can i pass string value from one viewcontroller to another without xib in xcode?

5 Answers5