Question

I have a view with a button and a label on it. Now when I click on that button, I will be taken to another page (view) that displays a Tableview with some values populated in it.

I have successfully coded the button and the label view, and also the populating part of the tableview.

Now what I need to do is, when I click on an item or a row, in the tableview, that value should be shown on the previous page (that contained a button and a label). How should I do this? Any idea?

Note: I can’t provide any code, because I am on my Linux machine 🙁

Answer 1

Maybe the best solution is coding a protocol.

In myProtocol.h

@protocol myProtocol

-(void) didSelectItem: (id) yourItem;

@end

Then, in the interface file of the viewController that contains your tableView:

@interface MyViewController : UIViewController {
    id <myProtocol> selectionDelegate;
}

@property (nonatomic, assign)  id <myProtocol> selectionDelegate;

In .m file:

 @synthesize selectionDelegate;



- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
{
    //do something with your data and pass it to the delegate.
    [self.selectionDelegate didSelectItem:myObject];
[self.navigationController popViewControllerAnimated:YES];

}

The viewController that contains the button and the label must implement your delegate:

In .h:

@interface OtherViewController : UIViewController <myProtocol>  {


...

}

In .m:

-(void) didSelectItem: (id) yourItem
{
    //do something with your item, set the label and everything...

}

In some part of your code you will have to set the delegate

Hope this helps