Question

我在我创建的UITableViewCell中显示数据时遇到问题。

我有一个CoreData模型，我有一个自定义的Cell，我从Xib加载。布局正确加载并生成正确的单元格数。更新button.titleLabel.text和description时出现问题。

这是我的uitableview和uitableviewcell相关代码：

#pragma mark - UITableViewDatasource Methods.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return [pointsHistoryItems count];
}

// Row display. Implementers should *always* try to reuse cells by setting each cell's reuseIdentifier and querying for available reusable cells with dequeueReusableCellWithIdentifier:
// Cell gets various attributes set automatically based on table (separators) and data source (accessory views, editing controls)

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    NSString *CellIdentifier = [NSString stringWithFormat:@"Cell%d",indexPath.row];
    PointsHistoryItemCell* cell = (PointsHistoryItemCell*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    return [self createCustomCell:cell cellForRowAtIndexPath:indexPath];
}

- (PointsHistoryItemCell *)createCustomCell:(PointsHistoryItemCell *)cell cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (cell == nil)
    {
        cell = (PointsHistoryItemCell *)[[[NSBundle mainBundle] loadNibNamed:@"PointsHistoryItemCell" owner:self options:nil] objectAtIndex:0];
    }

    AwesomePointsHistoryItem *aphi = (AwesomePointsHistoryItem *)[pointsHistoryItems objectAtIndex:indexPath.row];

    cell.description.text = aphi.description;

    NSString* pointsText = [NSString stringWithFormat:@"%@ Points", [aphi.points stringValue]];
    [cell.button.titleLabel setText:pointsText];


    NSLog(@"is reaching createCustomCell");
    NSLog(@"points %@", cell.button.titleLabel.text);

    return cell;
}

日志打印：

is reaching createCustomCell 
points 600 Points

然而.. cell.button.titleLabel.text不会更新！

我做错了什么？

Answer 1

使用

[cell.button setTitle: pointsText forState: UIControlStateNormal];

而不是

[cell.button.titleLabel setText:pointsText];

注意：希望cell.button是UIButton

核心数据单元未正确更新

1 个答案: