Question

I am trying to find a way to prevent or highjack didSelectRowAtIndexPath:. When a user selects a row in the tableview I want first throw an alertview saying “Data will be removed from CD if you do this.” “We will be syncing the data to the server should you continue”.

The user clicks yes continue. I want to prevent the new cell from being selected until the syncing completes. Should the syncing fail I want to pop an alert telling the user it failed and then stop didSelectRowAtIndexPath: from firing, thus preventing the new cell they touched from being selected.

Should the sync be successful I then want didSelectRowAtIndexPath: to be called.

Would the best way be to highjack willSelectRowAtIndexPath:?

Answer 1

Implement the delegate method

-(NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath

and return nil for the relevant indexPath

This will stop the relevant cell being selected.

From the docs for UITableViewDelegate

Return Value An index-path object that confirms or alters the selected
row. Return an NSIndexPath object other than indexPath if you want
another cell to be selected. Return nil if you don’t want the row
selected.