In the fourth and final article of Jeff Prosise's series on tombstoning, he fixes one last bug and finally produces a finished application.
Source: Jeff Prosise's Blog
Tombstoning is one of the greatest challenges in writing applications for Windows phones, which is why I decided to devote a series of blog posts to it. In Part 1 of this series, we built a photo-extras application that allows the user to perform simple image-editing chores on photos. In Part 2, we added tombstoning support so the application wouldn’t lose its state when tombstoned. And in Part 3, we fixed a bug in our tombstoning logic and refined it so that it wouldn’t untombstone anything if the app hadn’t been tombstoned in the first place.