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POCan not load core data in a table view?
 

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  1. POCan not load core data in a table view?
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    <p>I am doing a Karaoke project. I want to load my data to a table view using NSManagedObjectModel but It didnt work</p> <p>Firstly, I load all songs in my KBDataInitializer.m and it work fine. I can push them to an array. I also can NSlog all songs name.</p> <pre><code>@implementation KBDataInitializer - (NSArray*) getAllSongs{ [self setupDataContext]; NSFetchRequest *fetchRequest = [[NSFetchRequest alloc ] initWithEntityName:@"KBSong"]; NSError *fetchError; NSArray *songs = [self.dataContext executeFetchRequest:fetchRequest error:&amp;fetchError]; if (fetchError !=NULL){ NSLog(@"fetch data ERROR"); } return songs; } </code></pre> <p>BUT when I load each song to the tableview in my HomeController it display nothing and when I try to NSlog my variable *song it show an message (which mean they can not load data):</p> <pre><code>$3 = 0x0e483d90 &lt;KBSong: 0xe483d90&gt; (entity: KBSong; id: 0x818b630 &lt;x-coredata://4BA983BA-1914-47C9-A22B-0373E84EAFC8/KBSong/p1&gt; ; data: &lt;fault&gt;) However in my viewDidLoad() I can load all songs. </code></pre> <p>My code in HomeController.h</p> <pre><code>@interface KBHomeController : UIViewController&lt;UITableViewDataSource,UITableViewDelegate&gt; { NSArray *songs; } @end </code></pre> <p>This is my loading code in my table view in HomeController.m</p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view from its nib. KBDataInitializer *data = [[KBDataInitializer alloc]init]; //Use for import updated new Songs //[data importData]; songs = [data getAllSongs]; // This one works fine for (KBSong *song in songs) { NSLog(song.name); } } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *simpleTableIdentifier = @"SimpleTableItem"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier]; if (cell == nil) { cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier]; } KBSong *song = [songs objectAtIndex:indexPath.row]; cell.textLabel.text = song.name; return cell; } </code></pre> <p>This is my KBSong.h</p> <pre><code>@interface KBSong : NSManagedObject @property (nonatomic, retain) NSNumber * code; @property (nonatomic, retain) NSString * composer; @property (nonatomic, retain) NSString * language; @property (nonatomic, retain) NSString * lyric; @property (nonatomic, retain) NSString * name; @property (nonatomic, retain) NSNumber * volume; @property (nonatomic, retain) NSNumber * favorite; @end </code></pre>
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    1. This table or related slice is empty.
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    1. UStommy
    1. UStommy
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
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      1. POCan not load core data in a table view?
      1. This table or related slice is empty.
      1. VTDownMod
    2. VO
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      1. POCan not load core data in a table view?
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      1. VTDownMod
    1. COcan you please just try once by doing NSString *tempString = song.name; then cell.textlabel.text = tempString; and then told me if you still getting the error. if this will solve your problem then i will explain this to you
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      1. POCan not load core data in a table view?
      1. USAnurag Soni
    2. COI did it but the result was still the same :(. I "po song" and it display "...data: <fault>". It is weird that my songs array still had 1000 objects but I can not push each object to my *song variable.
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      1. POCan not load core data in a table view?
      1. UStommy
    3. COFrom where did comes songs in KBSong *song = [songs objectAtIndex:indexPath.row];
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      1. USRFG
 

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