Question

我想动态地将UILabel添加到我的UITableViewCell。所以在CellforrowAtIndex事件中我确实喜欢这个。

static NSString *simpleTableIdentifier = @"SimpleTableCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
UILabel *lbl;
[[cell viewWithTag:100] removeFromSuperview];

if (cell == nil) {
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:simpleTableIdentifier];



}

lbl=[[UILabel alloc] initWithFrame:cell.imageView.frame];
[lbl setText:[NSString stringWithFormat:@"%lu",[[[mutArrayPendingRequests objectAtIndex:indexPath.row] objectForKey:@"RequestItems"] count]]];
[lbl setTag:100];
[lbl setTextAlignment:NSTextAlignmentCenter];
[cell.contentView addSubview:lbl];

但我的问题是当表格加载时我的文字没有设置为UILabel。但是一旦我滚动它就会加载前三个单元格和底部三个单元格。中间单元格标签未加载。这是什么原因？如何将UILabel作为自定义视图添加到我的UITableViewCell？请帮我。感谢

Answer 1

试试这个

 if (cell == nil){
        cell = [[UITableViewCell alloc]
                      initWithStyle:UITableViewCellStyleDefault
                      reuseIdentifier: simpleTableIdentifier];

        //create custom labels and button inside the cell view

        lbl = [[UILabel alloc] initWithFrame:cell.imageView.frame];
        lbl.tag = 100;
        lbl.font = [UIFont boldSystemFontOfSize:17.0];
        lbl.backgroundColor = [UIColor clearColor];
        [lbl setTextAlignment:NSTextAlignmentCenter];
        [cell.contentView addSubview: lbl];
    }
   else {
        lbl = (UILabel *)[cell.contentView viewWithTag:100];
       }

   [lbl setText:[NSString stringWithFormat:@"%lu",[[[mutArrayPendingRequests objectAtIndex:indexPath.row] objectForKey:@"RequestItems"] count]]];

Answer 2

您为标签设置的框架尺寸，即cell.imageView.frame无效。

设置一些正确的帧值并检查它是否有效。

lbl=[[UILabel alloc] initWithFrame:CGRectMake(0, 0, 100, 20)];

Answer 3

试试这段代码：

    static NSString *simpleTableIdentifier = @"SimpleTableCell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
    UILabel *lbl;
    [[cell viewWithTag:100] removeFromSuperview];

    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:simpleTableIdentifier];

    }


    lbl = [[UILabel alloc]initWithFrame:CGRectMake(0, 0,200 ,40 )];
    [lbl setText:[NSString stringWithFormat:@"%lu",[[[mutArrayPendingRequests objectAtIndex:indexPath.row] objectForKey:@"RequestItems"] count]]];
    [lbl setTextAlignment:NSTextAlignmentCenter];         

    [cell.contentView addSubview:lbl];
  return cell;
}

以编程方式将UILabel添加到UITableView无法正确加载

3 个答案: