如何在iOS中访问heightForRowAtIndexPath中的单元格？

Question

我一直在寻找如何使像元高度动态化的方法， 幸运的是我找到了Uitable dynamic height github项目，它可以根据内容使像元高度动态化。

在代码单元中可以在heightForRowAtIndexPath中访问，但是我在代码中误解为在heightForRowAtIndexPath中使用了cellForRowAtIndexPath的相同代码。如果代码太长，我是否需要重复代码？

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

    CustomTableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:@"CustomCell"];

    cell.fontNameLabel.text = _fontArray[indexPath.row];

    int quoteIndex = indexPath.row % [_quoteArray count];
    cell.quoteLabel.text = _quoteArray[quoteIndex];
    NSString *fontName = _fontArray[indexPath.row];
    cell.quoteLabel.font = [UIFont fontWithName:fontName size:17];
    return cell;

}

// NOTE: in iOS 8 you can use the automatic height calculations from AutoLayout,
//  and you can avoid writing this height method. Just comment it out, and uncomment
//  the line in viewDidLoad for
//  _tableView.rowHeight = UITableViewAutomaticDimension;
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {

    // Calculate a height based on a cell
    if(!self.customCell) {
        self.customCell = [self.tableView dequeueReusableCellWithIdentifier:@"CustomCell"];
    }

    // Configure the cell
    self.customCell.fontNameLabel.text = _fontArray[indexPath.row];

    int quoteIndex = indexPath.row % [_quoteArray count];
    self.customCell.quoteLabel.text = _quoteArray[quoteIndex];
    NSString *fontName = _fontArray[indexPath.row];
    self.customCell.quoteLabel.font = [UIFont fontWithName:fontName size:17];


    // Layout the cell

    [self.customCell layoutIfNeeded];

    // Get the height for the cell

    CGFloat height = [self.customCell.contentView systemLayoutSizeFittingSize:UILayoutFittingCompressedSize].height;

    // Padding of 1 point (cell separator)
    CGFloat separatorHeight = 1;

    return height + separatorHeight;
}