sqlite - Xcode 4.2 线程 1 sigabrt 错误。从数据库中检索

Question

我发现 Sigabrt 抛出错误是因为这段代码我试图根据教程从数据库中检索但我不知道错误是什么。我只是评论了给我带来问题的行，但我不明白发生了什么

(void)viewDidLoad
{
    MyWineLists * mywines =[[MyWineLists alloc] init];
    self.wines = [mywines getMyWines];
    /*[self.wineViewer setImage:((WineList *) [self.wines objectAtIndex:0]).photo];

    [self.winename setText:((WineList *) [self.wines objectAtIndex:0]).wine];

    [self.winerating setText:((WineList *) [self.wines objectAtIndex:0]).rating];*/
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}