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iOS Build a Self-Destructing Message iPhone App Retrieving and Viewing Data from Parse.com Viewing Images Using UIImageView

Cristiano Di Marco
Cristiano Di Marco
5,345 Points
Posted by Cristiano Di Marco
Cristiano Di Marco
5,345 Points

problem with prepareForSegue

I have a problem; the segue associated at the UIViewController of the imageView it doesn't work. When i click in the simulator in the cell with the message with an image, nothing happens. I have checked all the code in all the view controller and the cell identifier and segue identifier in the stoyboard too. i've checked the class name in the data browser of parse too. I use Xcode 5.1.1.

i Need help

2 Answers

Cristiano Di Marco
Cristiano Di Marco
5,345 Points
Cristiano Di Marco
Cristiano Di Marco
5,345 Points

ok thanks!

inBoxViewController M

-(void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath { PFObject *message = [self.messages objectAtIndex:indexPath.row];

NSString *fileType = [message objectForKey:@"fileType"];

if ([fileType isEqualToString:@"image"]){

    [self performSegueWithIdentifier:@"showImage" sender:self];
    }
else {

}

}

  • (IBAction)logout:(id)sender { [PFUser logOut]; [self performSegueWithIdentifier:@"showLogin" sender:self]; }

  • (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { if ([segue.identifier isEqualToString:@"showLogin"]) { [segue.destinationViewController setHidesBottomBarWhenPushed:YES]; } else if ([segue.identifier isEqualToString:@"showImage"]) { [segue.destinationViewController setHidesBottomBarWhenPushed:YES]; ImageViewController *imageViewController = (ImageViewController *)segue.destinationViewController; imageViewController.message = self.selectedMessage; } }

imageViewController M

@implementation ImageViewController

  • (void)viewDidLoad { [super viewDidLoad];

    PFFile *imageFile = [self.message objectForKey:@"file"]; NSURL *imageFileUrl = [[NSURL alloc]initWithString:imageFile.url]; NSData *imageData = [NSData dataWithContentsOfURL:imageFileUrl]; self.imageView.image = [UIImage imageWithData:imageData];

}

Neil Shweky
Neil Shweky
5,022 Points
Neil Shweky
Neil Shweky
5,022 Points

I would perform some kind of test to make sure that the method is being called. Maybe try putting a breakpoint there!

Cristiano Di Marco
Cristiano Di Marco
5,345 Points
Cristiano Di Marco
Cristiano Di Marco
5,345 Points

Thank you Neil, but i've fixed it!!! I don't know how and i don't understand but now it works! Thank you!