I'd like to add a Done button to the iPhone number pad keyboard. There's even a handy space at the bottom left for just such a button.
Previously, I was using a similar trick to those described in Question 584538 and Luzian Scherrer's excellent blog post, but that stopped working in iOS 4. I can do it by creating a custom inputView, but I'd prefer to extend Apple's keyboard instead of writing my own.
Is there a new way to add a view to the standard keyboard? Has someone published an OSS inputView for this? Is there another way?