Since it is a highly requested feature, I've been spending a lot of time lately on refining our GPS tracking solution for Android. Tracking, also known as breadcrumbing, automatically marks a series of GPS points as you travel with GPS on.
Although they are typically end up as a bunch of squiggly lines, there are some challenges to drawing GPS tracks on Android and other mobile devices. The sheer amount of data, though it wouldn't be an issue for your quad core desktop, can be an issue for mobile apps.
Despite the challenges, I'm glad to announce some great progress in GPS tracking for Android.
This is a screenshot of the Continental Divide on a wide zoom that shows it covering four states. This squiggly line has more than 18000 points, spread over four tracks in four states. As of yesterday, BackCountry Navigator is able to display this in real time.
Here is a different view of the same data, with a higher zoom on the GPS track in Android with a topo map. In this case, you still must consider all 18000 points and sort through them in order to draw a smaller number of points, say 200 or so. This is also challenging on a mobile device, but based on our testing, this also is rendered in real time.
This progress for having gps tracks in Android is very encouraging. Within the next week, most of you should have an update so you can try this yourself. Happy Tracking!