How to pass data back from detail view controller to uitableview?

Question

In my app i making use of uitable to select category from my list. my task is,when ever user click or select a cell he should be able to view the selected cell detail in next vi

Answer 1

You need to make use of custom delegates. Create a protocol in your detailview and implement it in your rootview.Pass the selected string as parameter to delegate method and from the delegate method, display it in your textfield.

//something like this
@interface detailViewController

// protocol declaration 
@protocol myDelegate
@optional
   -(void)selectedValueIs:(NSString *)value;

// set it as the property
@property (nonatomic, assign) id<myDelegate> selectedValueDelegate;

// in your implementation class synthesize it and call the delegate method
@implementation detailViewController
@synthesize selectedValueDelegate
// in your didselectRowAtIndex method call this delegate method
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
 {

      [self  selectedValueDelegate])selectedValueIs:valueString] ;
      [self.navigationController popViewControllerAnimated:YES];

  }




@end

// In your rootViewController conform to this protocol and then set the delegate

         detailViewCtrlObj.selectedValueDelegate=self;
//Implement  the delegate Method 
     -(void)selectedValueIs:(NSString *)value{
       {
            // do whatever you want with the value string
       }

Answer 2

Hi you will have to do it using protocols and delegate Please see my linkon protocol and delegate

you can also do it by creating a variable in appdelegate , setting its property and accessing it in any other view .

YourAppDelegate *appDelegate = (YourAppDelegate *)[[UIApplication sharedApplication] delegate];
delegate.yourVariable;