How can I increase the height of UITableViewCell dynamiclly

Question

I have an UITableView which includes a list of UITableViewCells. And I set the heights of UITableViewCells in method (CGFloat)tableView:(UITableView *)tableView height

Answer 1

1. Store selected index in your controller.

2. Return cell's height depending on that index:

   CGFloat height = 30.0f;
   ...
   -(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
       return indexPath.row == selectedIndex ? height+100 : height;
   }
   

3. Refresh tableview geometry in didSelectRowAtIndexPath method (empty block between beginUpdates and endUpdates does the trick):

   - (void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
       index = indexPath.row;
       [tableView beginUpdates];
       [tableView endUpdates];      
   }
   

Answer 2

Make your delegate method

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

return the (new) correct height and make the table view reload the given path.