将数据从DetailViewController发送到MasterViewController

Question

This is what exactly I'm trying to do.

wizardviewcontroller.m

- (IBAction)onCountryClick:(id)sender {
    MJDetailViewController *detailViewController = [[MJDetailViewController alloc] initWithNibName:@"MJDetailViewController" bundle:nil];
    [self presentPopupViewController:detailViewController animationType:MJPopupViewAnimationSlideLeftRight];
}

User click country button a popup shows with list.

when user select a row button title should change.

This is my detailview,

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath: (NSIndexPath     *)indexPath {

    WizardViewController *mj = [[WizardViewController alloc]       initWithNibName:@"WizardViewController" bundle:nil];
    mj.countryselected = [countryNames objectAtIndex:indexPath.row];
    [mj.countryButton setTitle:mj.countryselected forState:UIControlStateNormal];
    [self dismissPopupViewControllerWithanimationType:MJPopupViewAnimationFade];
}

DetailViewController is dismissing, but countryButtonTitle is not updating. I know this is because the wizardview is not refreshing. I would like to know the correct workaround in this case.

Hope this helps to get better answer.

Answer 1

Make Protocol in MJDetailViewController

@protocol MJDetailViewControllerDelegate;
@interface MJDetailViewController : UIViewController
@property (nonatomic,assign) id< MJDetailViewControllerDelegate> delegate;
@end


@protocol MJDetailViewControllerDelegate <NSObject>

- (void)selectedContry:(NSString *)title;

@end

And call like

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath: (NSIndexPath     *)indexPath {

    NSString *title = [countryNames objectAtIndex:indexPath.row];
       if ([self.delegate respondsToSelector:@selector(selectedContry:)]) {
            [self.delegate selectedContry:title];
        }
    [self dismissPopupViewControllerWithanimationType:MJPopupViewAnimationFade];
}

Add MJDetailViewControllerDelegate as a protocol in WizardViewController.h )

Now implement selectedContry: method in WizardViewController.m like:

- (void)selectedContry:(NSString *)title
{
    [self.countryButton setTitle:title forState:UIControlStateNormal];
}

Hope it helps you.