Iphone 基于单元格索引在tableview单元格中放置进度视图

我是iphone新手。我有一个小问题，我有一个CustomCell类，我声明了所有我需要的元素，如下所示

// CustomCell.h

在这个类中，我将getter和setter方法设置为TitleLabel、PercentageLabel、ProgressView和downloadButton

//  CustomCell.m

在这个类中，首先将框架设置为，并将图像设置为下载按钮

我的输出屏幕的屏幕截图是

//在我的表视图中，当我们单击下面的方法时，我有一个下载按钮

-(void)downloadButtonClicked:(id)sender
{
    NSLog(@"download button clicked");
    int index = [sender tag];
    NSLog(@"index of the cell is %d",index);
    UIButton *button = (UIButton*)sender;

    UITableViewCell *cell = (UITableViewCell *)[[button superview] superview];

    UILabel *titleLabel = (UILabel *)[cell viewWithTag:100];

    NSLog(@"label text =%@",titleLabel.text);

    UIView *senderButton = (UIView*) sender;
    NSIndexPath *indexPath = [tableView indexPathForCell: (UITableViewCell*)[[senderButton superview]superview]]; 
    NSLog(@"indexpath is %d",indexPath.row);

    CustomCell *customCell = [[CustomCell alloc]init];
    progressView = [[UIProgressView alloc]init];
   // [customCell.contentView insertSubview:progressView atIndex:indexPath.row];
    [customCell.contentView addSubview:progressView];

    selectedBookTitle = titleLabel.text;

    NSString* documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];


    NSMutableArray *allDownloadLinks;
    biblePlayerViewController = [[BiblePlayerViewController alloc]init]; 
    allDownloadLinks = [biblePlayerViewController allDownloadLinks];
    NSLog(@"all Download Links are %@",allDownloadLinks);

    biblePlayerViewController.indexOfSelectedBookTitle = [[appDelegate getBookNames]indexOfObject:selectedBookTitle];

    Download* download = [Download downloadWithTitle:selectedBookTitle url:[NSURL URLWithString:[NSString stringWithFormat:@"http://www.audiotreasure.com/%@.zip",[allDownloadLinks objectAtIndex:(biblePlayerViewController.indexOfSelectedBookTitle)]]]PathtoSave:documentsPath];
    [[DownloadManager sharedDownloadManager] queueDownload: download];


}

//在cellForRowAtIndexPath tableview委托方法中，我编写了如下代码

- (UITableViewCell *)tableView:(UITableView *)_tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"Cell";
    CustomCell *cell = [_tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (cell == nil) 
    {
        cell = [[CustomCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];

    }    
    NSLog(@"indexpath.row is %d",indexPath.row);
    NSLog(@"downloadmanager is %d",[[[DownloadManager sharedDownloadManager]getDownloads]count]);
  /*  if (indexPath.row<[[[DownloadManager sharedDownloadManager] getDownloads]count]) 
    {
        cell.TitleLabel.text = ((Download*)[[[DownloadManager sharedDownloadManager] getDownloads] objectAtIndex:indexPath.row]).title_;    
        cell.ProgressView.progress = (float)(((Download*)[[[DownloadManager sharedDownloadManager] getDownloads] objectAtIndex:indexPath.row]).PercentageDownloaded_ )/100.0f;
        cell.PercentageLabel.text = [NSString stringWithFormat:@"%d %%",((Download*)[[[DownloadManager sharedDownloadManager] getDownloads] objectAtIndex:indexPath.row]).PercentageDownloaded_];     
    }
    else
    {
        [tableView reloadData];
    }*/
    NSString *titleLabel = [[appDelegate getBookNames]objectAtIndex:indexPath.row];
    cell.TitleLabel.text = titleLabel;
    cell.downloadButton.tag = indexPath.row;
    NSLog(@"tag is %d",cell.downloadButton.tag);
  [cell.downloadButton addTarget:self action:@selector(downloadButtonClicked:) forControlEvents:UIControlEventTouchUpInside];

    return cell;
}

-（UITableViewCell*）tableView:（UITableView*）\u tableView cellForRowAtIndexPath:（NSIndexPath*）indexPath
{
静态NSString*CellIdentifier=@“Cell”；
CustomCell*cell=[\u tableView dequeueReusableCellWithIdentifier:CellIdentifier]；
如果（单元格==nil）
{
cell=[[CustomCell alloc]initWithStyle:UITableViewCellStyleSubtitle重用标识符：CellIdentifier]；
}    
NSLog（@“indexpath.row为%d”，indexpath.row）；
NSLog（@“downloadmanager为%d”，[[[downloadmanager sharedDownloadManager]getDownloads]计数]）；
/*如果（indexPath.row，为什么不从头开始在单元格中添加进度视图？
最初将其隐藏，当您触摸下载按钮时，您会告诉手机显示它

我看到您将单元格的indexPath.row存储在下载按钮标记中，您可以使用它来查找所选择的单元格，如下所示

NSIndexPath *cellIndexPath = [NSIndexPath indexPathForRow:sender.tag inSection:0];
CustomCell *cell = (CustomCell *)[tableView cellForRowAtIndexPath:nowIndex];
[cell showProgressBar];

我写了我的头上的代码…没有测试它