Question

任何人都可以告诉我为什么我的代码没有在我的表视图中显示任何结果。这是我的代码。我已经尝试将@“@”更改为indexPath.row而没有任何运气。我正在寻找正确方向的答案。我是xcode和objective-c的新手。我真的很感激任何帮助。

-(void)waitAndFillPlaylistPool {
    // arrPlaylist -> mutablearray which stores the value of loaded playlist in order to use it later


    [SPAsyncLoading waitUntilLoaded:[SPSession sharedSession] timeout:kSPAsyncLoadingDefaultTimeout then:^(NSArray *loadedession, NSArray *notLoadedSession)
     {
         // The session is logged in and loaded — now wait for the userPlaylists to load.
         NSLog(@"[%@ %@]: %@", NSStringFromClass([self class]), NSStringFromSelector(_cmd), @"Session loaded.");

         [SPAsyncLoading waitUntilLoaded:[SPSession sharedSession].userPlaylists timeout:kSPAsyncLoadingDefaultTimeout then:^(NSArray *loadedContainers, NSArray *notLoadedContainers)
          {
              // User playlists are loaded — wait for playlists to load their metadata.
              NSLog(@"[%@ %@]: %@", NSStringFromClass([self class]), NSStringFromSelector(_cmd), @"Container loaded.");

              NSMutableArray *playlists = [NSMutableArray array];
              [playlists addObject:[SPSession sharedSession].starredPlaylist];
              [playlists addObject:[SPSession sharedSession].inboxPlaylist];
              [playlists addObjectsFromArray:[SPSession sharedSession].userPlaylists.flattenedPlaylists];

              [SPAsyncLoading waitUntilLoaded:playlists timeout:kSPAsyncLoadingDefaultTimeout then:^(NSArray *loadedPlaylists, NSArray *notLoadedPlaylists)
               {
                   // All of our playlists have loaded their metadata — wait for all tracks to load their metadata.
                   NSLog(@"[%@ %@]: %@ of %@ playlists loaded.", NSStringFromClass([self class]), NSStringFromSelector(_cmd),
                         [NSNumber numberWithInteger:loadedPlaylists.count], [NSNumber numberWithInteger:loadedPlaylists.count + notLoadedPlaylists.count]);
                   NSLog(@"loadedPlaylists >> %@",loadedPlaylists);

                   arrPlaylist = [[NSMutableArray alloc] initWithArray:loadedPlaylists];
                   NSLog(@"arrPlaylist >> %@",arrPlaylist);

               }];
          }];
     }];
}


- (NSInteger) tableView:(UITableView *) tableView numberOfRowsInSection:(NSInteger)section {

    return [arrPlaylist count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{

    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
    }

        cell.textLabel.text = [arrPlaylist objectAtIndex:indexPath.row];
        cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;


    return cell;
}

Answer 1

很难说出你在方法中做了什么，waitAndFillPlaylistPool，但是如果这需要任何时间来获取这些数据，那么你需要在你的表视图（[self.tableView reloadData]）上调用reloadData作为该方法的最后一行（或任何异步方法返回时 - 我无法分辨代码中的位置）。

数组未在表视图中显示

1 个答案: