Adding a network - Twitter

So far, we have a pretty basic application, which can save and load its preferences, but let's get down to what we're here for and start connecting to social networks. What we hope to develop is a framework that makes it easy to add support for different social networks. Technically, as we'll soon see, the network need not even be social as the only thing that will imply a specific type of source is the name of the classes and interfaces involved. However, we will, in fact, focus on social networks, and we'll use a couple of different ones to show some variety. To that end, we'll start with Twitter, the massively popular microblogging platform, and Instagram, the increasingly photo-focused network that is now part of Facebook.

Note

Speaking of Facebook, why are we not demonstrating integration with that social network? Two reasons--One, it's not significantly different from Twitter, so there would not be much that was new to cover; two, most importantly, the permissions...