UIActionSheet - Unknown Number Of Buttons, How to know what to call?

Hey guys,

I have a UIActionSheet with an undetermined number of buttons. I'll need to use the delegate method buttonClickedAtIndex: (or something similar) to decide what method to call when the user clicks a button.

The problem is: how do I decide which button is clicked when different buttons will appear at different indexes in different situations?

One solution is to look at the button's title and act on that - but that's ugly, non-localisable and just bad practise.

Any ideas?

From stackoverflow

• Is this a case where a single controller might show several sheets, but you know which buttons will appear on each sheet? If so, you can use the sheet's tag property to differentiate between them.

  - (IBAction)showEditSheet:(id)sender {
      UIActionSheet * sheet = [[UIActionSheet alloc] initWith...];
      sheet.tag = 1;
      [sheet showInView:self.view];
  }
  - (IBAction)showDeleteSheet:(id)sender {
      UIActionSheet * sheet = [[UIActionSheet alloc] initWith...];
      sheet.tag = 2;
      [sheet showInView:self.view];
  }
  - (void)actionSheet:(UIActionSheet *)actionSheet
    clickedButtonAtIndex:(NSInteger)buttonIndex {
      switch(actionSheet.tag) {
          case 1:
              // This is the edit sheet
              switch(buttonIndex) { ... }
              break;
  
          case 2:
              // This is the delete sheet
              switch(buttonIndex) { ... }
              break;
  
          default:
              NSAssert(NO, @"Unknown action sheet");
      }
  }
  

  Jasarien : iPhone users were given the choice to use the camera or the library. iPod Touch doesn't have a camera. The instead of changing the buttons on the sheet, we decided to just send the ipod user straight to the library without a choice. So only one sheet with static buttons is used. Problem solved.

• PLEASE don't show people how to [alloc] memory... without ever freeing it.

  Ugh.

  Jasarien : Memory management is beyond the scope of this question...