What is "focused" regarding android apps?
<p>I keep seeing "focused" and hearing about "focusing" within the development of Android apps. My question is: What is focusing, and how is it applied within Android apps? Is it important? What can you do with it?</p>

<p>I'm sorry if this has been asked, I looked but didn't see anything that clearly explained it. I've looked the the Android development guide, but I couldn't find a decent explanation of what it is and how it works. </p>
