Different UITableViewCell heights

Question

I have built three different cells in my storyboard and hooked all the outlets up, each cell has a unique identifier.

For example I have one cell which holds a picture, another which has a label and another with other contents, so they are all unique and each cell type requires its own height (dynamic or status, it doesn't matter).

However, how is it that I can make a cell with 'indentifier1' return a certain height and then the others cells returns different heights?

I know I can use - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath but I am unsure how to differentiate the cells.

I am using core data and fetch results for the tableview from that.

Edit

I have tried this with tags but its crashes at the first if statement:

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    CGFloat cellHeight;

    if ([[tableView cellForRowAtIndexPath:indexPath] tag] == 1) cellHeight = 170;
    else if ([[tableView cellForRowAtIndexPath:indexPath] tag] == 2) cellHeight = 100;
    else if ([[tableView cellForRowAtIndexPath:indexPath] tag] == 3) cellHeight = 140;

    return cellHeight;
}

Answer 1

Updated

Use dynamic height of UITableView now as it's easy as UITableView automatically calculates it

Old

Use this method to your requirement below is an example:

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

  //calculate height according to text and on basis of indexPath
  if(indexpath.row == 0)
  {
    return 60.0f;
  }
  else if(indexpath.row == 1)
  {
    return 70.0f;
  }
  else
  {
    return 55.0f;
  }
}

Note : if your size is not fixed then you will have calculate it then provide in above method according to your requirement.

Answer 2

You shouldn't call cellForRowAtIndexPath within heightForRowAtIndexPath or you'll enter an infinite loop which will cause the app crash.

You should determine the height of every cell in the same way you determine the type of the same cell in cellForRowAtIndexPath.

That's the only solution I think.