根据UITableViewCell Label的高度和宽度调整背景图像的大小

我可以根据文本调整自定义UITablleViewCell"标签的宽度和高度.看起来像下面.

I am able to adjust the Custom UITablleViewCell label width and height based on the text. It looks like below.

现在，我想将下面的聊天气泡图像设置为标签作为背景，以便气泡根据标签文本调整其大小，并提供与其他Messenger相似的气泡效果.

Now i want to set the below chat bubble image to the label as background so that the bubble adjusts its size based on label text and gives the bubble effect similar to other messengers.

下面是我用于将图像设置为标签背景的代码.

Below is my code for setting the image as background of label.

-(CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath {

    return UITableViewAutomaticDimension;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{

        return UITableViewAutomaticDimension;


}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{



            static NSString *simpleTableIdentifier = @"ChatConversationTableViewCell";

            ChatConversationTableViewCell *cell = (ChatConversationTableViewCell *)[tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
            if (cell == nil)
            {
                NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"ChatConversationTableViewCell" owner:self options:nil];
                cell = [nib objectAtIndex:0];
            }

            cell.selectionStyle = UITableViewCellSelectionStyleNone;

            cell.chatmsgLabel.text = [chatHistoryArr objectAtIndex:indexPath.row];
            cell.timeAndDateMsgLabel.text = [timeAndDateMsgArr objectAtIndex:indexPath.row];

UIImage *img = [UIImage imageNamed:@"bubble2.png"];
CGSize imgSize = cell.timeAndDateMsgLabel.frame.size;

UIGraphicsBeginImageContext( imgSize );
[img drawInRect:CGRectMake(0,0,imgSize.width,imgSize.height)];
UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

cell.timeAndDateMsgLabel.backgroundColor = [UIColor colorWithPatternImage:newImage];

            return cell;


}

输出看起来像

我的预期输出是

下面的更多信息是我的CustomTableViewCell及其约束

For more info below is my CustomTableViewCell and its constraints

我为实现输出做了很多尝试，但我无法弄清楚.还有其他实现输出的方法，我准备遵循适合我要求的任何方法.任何帮助将不胜感激.

I tried a lot to achieve the output but i am unable to figure out. Are there any other approaches to achieve the output, i am ready to follow any approach which suits my requirement. Any help will be really appreciated.