Question

i have got two view.
First: FirstViewController
Second: SecondViewController

FirstViewController is my UINavigationController‘s root controller and inside FirstViewController I ve got UITableView. When a cell is clicked in UITableView, the view is navigated to SecondViewController. Inside SecondViewController i have UILabel. I want to assign this UILabel’s value to the cell which is clicked at FirstViewController when Back button is clicked in Navigation Bar. What am i supposed to do to implement this?

I can pass value to SecondViewController from FirstViewController by creating:

SecondViewController *sv;
sv.somestring = someanotherstring;

but can not implement this at SecondViewController to pass the value to a NSString in FirstViewController.

Can u help me please?

Thank you.
ae

Answer 1

Ya , there is much a easy way to handle this…..

You can take a Global Variable

In your Delegate.h file declare your variable:

@interface Smoke_ApplicationAppDelegate : NSObject {

  UIWindow *window;
  UINavigationController *navigationController;
  NSString *messageString;  //This would be your String Variable
}
 @property(nonatomic,retain)NSString *messageString;

Secondly in Delegate.m file

@implementation Smoke_ApplicationAppDelegate

@synthesize window; 
@synthesize navigationController; 
@synthesize messageString; // Synthesize it over here..

This is Done .Now you can use this String Variable in All/any class you want..

To use this Global Variable.

Just import you Delegate file make the obj of it….

import "DelegateFile.h"

@implementation About

DelegateFile *appDel;

Now in Your class.m

-(void)viewDidLoad { [super viewDidLoad];

appDel=[[UIApplication sharedApplication]delegate];

}

Now you can access it anywhere in your class by this Object:

appDel.messageString

Just follow my Steps Carefully , I am sure this is definitely going to help you…..

Have a easy life,