cell根据文本高度动态调整高度适应-优快云博客

原文出处：http://www.cimgf.com/2009/09/23/uitableviewcell-dynamic-height/

1.前提是已经知道文本内容，算出文本的高度。

-》》》根据不同row的文本高度设定cell的高度

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath;
{
  NSString *text = [items objectAtIndex:[indexPath row]];
    
  CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);
    
  CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];
    
  CGFloat height = MAX(size.height, 44.0f);
    
  return height + (CELL_CONTENT_MARGIN * 2);
}

-》》》然后设定label的高度适应cell的高度

- (UITableViewCell *)tableView:(UITableView *)tv cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
  UITableViewCell *cell;
  UILabel *label = nil;

  cell = [tv dequeueReusableCellWithIdentifier:@"Cell"];
  if (cell == nil)
  {
    cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:@"Cell"] autorelease];
        
    label = [[UILabel alloc] initWithFrame:CGRectZero];
    [label setLineBreakMode:UILineBreakModeWordWrap];
    [label setMinimumFontSize:FONT_SIZE];
    [label setNumberOfLines:0];
    [label setFont:[UIFont systemFontOfSize:FONT_SIZE]];
    [label setTag:1];

    [[cell contentView] addSubview:label];
  }
}