Question

I have to pass a string value from one view to a label in other view. But when I do such thing the label value is null. Could not understand where I am going wrong? Here is my code:

In FirstViewController.m

SecondViewController *gp=[[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:[NSBundle mainBundle]];
gp.d.text = [NSString stringWithFormat:@"%@", nam];
[self.view addSubview:gp.view];
[gp release];

In SecondViewController.h

@interface SecondViewController : UIViewController<NSXMLParserDelegate>
{
    UILabel *d;
}

@property (nonatomic,retain) IBOutlet UILabel *d;

In SecondViewController.m
@synthesize d;

- (void)viewDidLoad
{
     NSString *urlString1 = [NSString stringWithFormat: @"http://192.168.0.108:8732/Design_Time_Addresses/ICloudServices/AppointmentService/json/GetProviders/?cid={%@}", [d text]];
}

But here the value of d is not passed. Why I dont understand. Where am I going wrong?

Answer 1

At the time of passing value to IBOutlet UILablel before adding subview is not allocated (has no memory reference).

So better way is to pass your value after adding subView.

[self.view addSubview:gp.view];
gp.d.text=[NSString stringWithFormat:@"%@",nam];

EDIT: better way is to pass string is like this:

Create property of NSString in SecondViewController say yourString.

Now

SecondViewController *gp=[[SecondViewController alloc]initWithNibName:@"SecondViewController" bundle:[NSBundle mainBundle]];
gp.yourString = [nam retain];
[self.view addSubview:gp.view];

Now in viewDidLoad of SecondViewController do this:

self.d.text = self.yourString;

Use yourString anywhere as per your requirement.