我有一个UITableView从后端加载的歌曲数量(实际上是歌曲的网址)。这些正在形成JSON格式。现在我的问题是当歌曲数量增加时,表格会卡住。很难滚动。那么我怎样才能避免这种情况呢?
我正在加载主视图顶部的视图。在主视图中viewDidLoad
  arrSongList=[[NSMutableArray alloc]init];
  arrSongList=[ws GetSongs];`
然后有一个菜单来选择歌曲选项。当我单击该菜单单元格时,它会加载歌曲视图。用于加载歌曲视图
-(void)getAllSongsAndReloadTable :(id)sender//1
{
    [viewDisplayArea addSubview:viewSongs];
    [self flipView : viewDisplayArea: viewDisplayArea :  UIViewAnimationTransitionFlipFromLeft];
    [progressAlert dismissWithClickedButtonIndex:0 animated:YES];
}
ViewSongs查看有歌表。它以这种方式加载
这是为了numberOfRowsInSection
else if (tableView.tag==4) 
{
    return [arrSongList count];
}
这是为了cellForRowAtIndexPath
else if (tableView.tag==4)//All Songs
{
    cell4 =nil;
    if (cell4 == nil) {
        NSArray *nib =[[NSBundle mainBundle]loadNibNamed:@"SongCell" owner:self options:nil];
        cell4=[nib objectAtIndex:0];
    }
    [cell4 setSelectionStyle:UITableViewCellSelectionStyleNone];
    cell4.lblSong.text=[[arrSongList objectAtIndex:indexPath.row] valueForKey:@"SONGTITLE"];
    cell4.lblArtist.text=[[arrSongList objectAtIndex:indexPath.row] valueForKey:@"ARTISTNAME"];
    NSString *imgUrl=[[arrSongList objectAtIndex:indexPath.row]valueForKey:@"SONGIMG"];
    NSData *data=[NSData dataWithContentsOfURL:[NSURL URLWithString: imgUrl]];
    UIImage *img = [[UIImage alloc] initWithData:data];
    cell4.imgSong.image=img;
    NSString *imgUrlLarge=[[arrSongList objectAtIndex:indexPath.row]valueForKey:@"SONGIMGLARGE"];
    NSData *dataLarge=[NSData dataWithContentsOfURL:[NSURL URLWithString: imgUrl]];
    UIImage *imgLarge = [[UIImage alloc] initWithData:dataLarge];
    cell4.imgSongLarge=[[UIImageView alloc]init];
    cell4.imgSongLarge.image=imgLarge;
    [cell4.btnTick addTarget:self action:@selector(tickButtonTapped:) forControlEvents:UIControlEventTouchUpInside] ;
    [cell4.btnAddtoMyList addTarget:self action:@selector(topLeft:) forControlEvents:UIControlEventTouchUpInside];
    return cell4;
}