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iOS

Posted by E Kanna
E Kanna
2,944 Points

Undefined symbols for architecture x86_64?

Undefined symbols for architecture x86_64:
  "_OBJC_CLASS_$_Playlist", referenced from:
      objc-class-ref in PlaylistMasterViewController.o
     (maybe you meant: _OBJC_CLASS_$_PlaylistMasterViewController, _OBJC_CLASS_$_PlaylistDetailViewController )
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

So I'm on 'Using a playlist instance' in Build a Playlist Browser with Objective C.. And my build started failing because of two errors. The Apple Mach-O linked error

This is the file where the code started having the issue and when I created the outlet in storyboard as well.

#import "PlaylistMasterViewController.h"
#import "PlaylistDetailViewController.h"
#import "Playlist.h"

@interface PlaylistMasterViewController ()

@end

@implementation PlaylistMasterViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    Playlist *playlist = [[Playlist alloc] initWithIndex:0];
    self.playlistImageView0.image = playlist.playlistIcon;
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    if ([segue.identifier isEqual:@"showPlaylistDetail"]) {
        PlaylistDetailViewController *playlistDetailController = (PlaylistDetailViewController *)segue.destinationViewController;
        playlistDetailController.segueLabelText = @"Yay, you pressed the button";
    }
}

@end

What on earth can I do to fix this?