iphone - 为什么我的 UITableView 第一次滚动时不流畅？

Question

我的表格视图单元格有四个标签。第一次滚动时，表格视图不流畅。在所有单元格显示一次后，滚动非常流畅，没有问题。所以我认为问题在于第一次加载一个单元格的速度。

我有重用单元，但问题没有解决。请帮我！非常感谢！

这是我的代码：

// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *MyIdentifier = @"MyIdentifier";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:MyIdentifier];
    if (cell == nil) {
        NSArray *views = [[NSBundle mainBundle] loadNibNamed:@"ForumListTableViewCell" owner:self options:nil];
        cell = [views objectAtIndex:0];
    }

    NSDictionary *cate = [_forums objectAtIndex:indexPath.section];
    NSArray *forumsInCate = [cate objectForKey:@"forums"];
    NSDictionary *forumInfo = [forumsInCate objectAtIndex:indexPath.row];

    // title1
    UILabel *forumTitleLabel = (UILabel *)[cell viewWithTag:1];
    forumTitleLabel.text = [forumInfo objectForKey:@"name"];

    // master
    UILabel *masterLabel = (UILabel *)[cell viewWithTag:2];
    NSString *master = [forumInfo objectForKey:@"moderators"];
    masterLabel.text = master;

    // title2
    UILabel  *threadTitleLabel = (UILabel *)[cell viewWithTag:3];
    NSString *lastPostTitle;
    NSDictionary *lastPostInfo = [forumInfo objectForKey:@"lastpost"];
    lastPostTitle = [lastPostInfo objectForKey:@"subject"];
    threadTitleLabel.text = lastPostTitle;

    // author
    UILabel *authorLabel = (UILabel *)[cell viewWithTag:4];
    authorLabel.text = [NSString stringWithFormat:@"%@ / %@",
                        [forumInfo objectForKey:@"threads"],
                        [forumInfo objectForKey:@"posts"]
                        ];

    return cell;    
}

Answer 1

NSArray *views = [[NSBundle mainBundle] loadNibNamed:@"ForumListTableViewCell" owner:self options:nil];

在.h

NSArray *views;

在.m

-(void)viewDidLoad
{
    [super viewDidLoad];
    views = [[NSBundle mainBundle] loadNibNamed:@"ForumListTableViewCell" owner:self options:nil];
}

- (void)dealloc
{
    //--- other object ----
    [views release];
    [super dealloc];
}