title: TableView Dynamic Row Height Not Getting Called
body: <p>I have an app that displays a TableView with two relatively static cells at the top, followed by a series of custom cells that contain a label and a segmented control.  These cells need to vary in height based on the amount of text in the label.  </p>
  
  <p>I'm calculating the required cell height in cellForRowAtIndexPath, storing the value in an  array, and then using the values from that array in heightForRowAtIndexPath.  It appears, however, that heightForRowAtIndexPath is getting called first, so all of my row heights are 0/nil.  </p>
  
  <p>How can I specify the row heights based on the particular content of the cell, when the cell height needs to be known before the cell is configured?</p>
  
  <p>Snippet from cellForRowAtIndexPath:</p>
  
  <pre><code>- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
  {
      NSInteger currentIndex = indexPath.item;
      if (indexPath.item == 0){
          static NSString *CellIdentifier = @"MeasurementCell";
          UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
          [self.cellHeightList insertObject:[NSNumber numberWithInt:44] atIndex:currentIndex];
          return cell;
      } else if (indexPath.item == 1){
          if (self.dataController.isScoreAvailable){
              static NSString *CellIdentifier = @"ScoreCell";
              UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
              [self.cellHeightList insertObject:[NSNumber numberWithInt:46] atIndex:currentIndex];
              return cell;
          } else {
              static NSString *CellIdentifier = @"ScoreCell";
              UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
              cell.accessoryType = UITableViewCellAccessoryNone;
              [self.cellHeightList insertObject:[NSNumber numberWithInt:0] atIndex:currentIndex];
              return cell;
          }
      } else if (indexPath.item &gt; 1){
          NSInteger labelWidth = [UIScreen mainScreen].applicationFrame.size.width - 140; //80 for segment + 3*20 for margins &amp; spacing
          CGSize maxSize = CGSizeMake(labelWidth, MAXFLOAT);
          CGSize labelSize;
  
          static NSString *CellIdentifier = @"QuestionCell";
          InterviewQuestionCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
          InterviewQuestion *questionAtIndex = [self.dataController objectInListAtIndex:(indexPath.item-2)];
          cell.questionLabel.text = questionAtIndex.questionText;
          labelSize = [cell.questionLabel.text sizeWithFont:[UIFont systemFontOfSize:12.0] constrainedToSize:maxSize lineBreakMode:NSLineBreakByWordWrapping];
          CGRect labelFrame = CGRectMake(0, 0, labelWidth, labelSize.height);
          cell.questionLabel.frame = labelFrame;
          cell.questionLabel.numberOfLines = 0;
          cell.answerControl.selectedSegmentIndex = questionAtIndex.answer;
          cell.answerControl.tag = indexPath.item;
          [self.cellHeightList insertObject:[NSNumber numberWithInt:labelSize.height] atIndex:currentIndex];
          return cell;
      }
      return nil;
  }
  </code></pre>
  
  <p>Code from heightForRowAtIndexPath:</p>
  
  <pre><code>- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
  {
      NSInteger currentIndex = indexPath.item;
      return [[self.cellHeightList objectAtIndex:currentIndex] integerValue];
  }
  </code></pre>
  
  <p>Thank You!</p>