How to access data from one view to another view?

Question

I have an UITabBarController with two tabs:

1. UINavigationController
2. OptionsViewController : UIViewController

Answer 1

I have an easy way to access data between views. Let's try. You have two views named view1 and view2, you can define a View *vc1 property in view2.h, set the vc1 point to view1, when pop the view2, like this:

view1.m

//here pop out view1 code
    View2 *view2 = [[View2 alloc] initWithNibName:@"View2" bundle:[NSBundle mainBundle]];
    [self.navigationController pushViewController:view2 animated:YES];
    view2.vc1 = self;  //transfer view1 instance to view2，use vc1 you may handle view1 in view2 directly
        [view2 release];

view2.h

    #import "view1.h"
    @property (nonatomic, retain) IBOutlet View1 *vc1; //here you could name it as view1 as well :)

view2.m

    vc1.lblTable.text = @"ok"; //you'll see "ok" in view1
    [self.navigationController popViewControllerAnimated:YES]; //navigate to view1

//dont forget release vc1