我想将一个UITextView放入到UITableViewCell当中，然后网络请求获取到数据后，放入UITextView，根据文字大小来动态调整UITextView和UITableViewCell的高度。然后查找资料后照以下代码书写 enter code here

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *contentTableIdentify = @"contentTableIdentify";

    UITableViewCell *cell = nil;
    //UILabel *label = nil;
    UITextView *textView = nil;
    cell = [self.tableView dequeueReusableCellWithIdentifier:contentTableIdentify];
    if (cell == nil)
    {   
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:contentTableIdentify];

        textView = [[UITextView alloc] initWithFrame:CGRectZero];
        [textView setTextColor:[UIColor blackColor]];
        [textView setFont:[UIFont fontWithName:@"Helvetica" size:12.0f]];
        [textView setBackgroundColor:[UIColor clearColor]];
        [textView setTag:1];
        [textView setEditable:NO];
        [[cell contentView] addSubview:textView];
    }

    NSString *text = [self.contentArray objectAtIndex:[indexPath row]];
    CGSize constraint = CGSizeMake(320 - (10 * 2), 99999.0f);
    CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:12.0f] constrainedToSize:constraint lineBreakMode:NSLineBreakByWordWrapping];

    if (!textView)
        textView = (UITextView *)[cell viewWithTag:1];

    [textView setText:text];
    [textView setFrame:CGRectMake(10, 10, 320 - (10 * 2), MAX(size.height, 44.0f))];
    //[cell.textLabel setText:[self.contentArray objectAtIndex:[indexPath row]]];
    return cell;
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSString *text = [self.contentArray objectAtIndex:[indexPath row]];

    CGSize constraint = CGSizeMake(320 - (10 * 2), 20000.0f);

    CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:12] constrainedToSize:constraint lineBreakMode:NSLineBreakByWordWrapping];

    CGFloat height = MAX(size.height, 44.0f);

    return height + (10 * 2);
}

可是上面代码实现的效果，不能将UITextView完全显示出来，还有有一部分数据需要滚动某个UITableViewCell中的UITextView才能显示出来。这个问题出在什么地方，谢谢。