Question

I have application

I want a button to open another screen with done button

after click this button a data be transfered from the current screen to the previous one

like opening options screen , how to let the main view know the changes be done on this subview

Best regards

Answer 1

You can use properties for this.

Create a property in the second class: .h file

@interface DetailViewController : UIViewController {

NSString *head;
}
@property(nonatomic,retain)NSString *head;

@end  

in .m file

@synthesize head;

Now in your firstviewcontroller or first class

if (dt==nil) {
    DetailViewController *d = [[DetailViewController alloc]initWithNibName:@"Detailview" bundle:nil];
    self.dt = d;
    [d release];
}

dt.head=itemsum;

[self.navigationController pushViewController:self.dt animated:YES];