Here's a quick background on my situation. I'm a college student and for my thesis project I've decided to develop a "campus navigator" app to assist incoming students in getting acquainted with the campus. This is a year long project so at this point I'm partially troubleshooting and partially trying to find out if my ideas are going to run me into walls later down the road.
So as not to have an overwhelmingly long post, I'll just ask about my current issues for now. The app opens up and allows the user to select "Map" or "Navigate". I started working with map first because it should be significantly simpler. Current State: The following currently works: hitting the map button displays a .png of my campus's map (located at http://www.brockport.edu/about/maps/suny.html). I've cropped the picture to only show the numbered buildings (i.e. the oval track at the bottom, erie canal along the top, and blank spaces on left/right near streets are all removed). The resulting image is 923x630. Using the multi-touch pan/zoom code from Hello, Android! (3rd Edition) (source code folder Touchv2 available at book's website), the map display page allows the user to pinch zoom and pan the image. Here's my first issue. With this implementation, the user is able to pan the picture out of the screen or zoom out until it only takes up a pixel or two. Is there any better implementation that will not allow the user to pan beyond the borders of the image or zoom out past the image size? This feeds into my next issue, the "Where I want to be" part. Ideally, I'd like the map display to use a location manager, and upon location change, draw a circle where the user is standing. As far as projecting latitude/longitude to pixel coordinates on the campus.png, that's just math and I can figure that part out. My question is, since I'm using an ImageView to put the png in, how can I draw on this? I've been searching around all day and it appears that Canvas would be the ideal way, since you can call drawCircle(x, y, radius, paint). However, I was unable to find a way to correlate an ImageView to a Canvas and back. On top of this, I need it to base these draws solely on the .png's pixel coordinates, not the current display (since the image may be panned or zoomed somewhere that would affect this). I know it would be simple to just use Google Maps to implement this, but if possible I'd strongly prefer to use the campus map, as it clearly depicts all the walkways and buildings on the campus. Any suggestions/help would be greatly appreciated. I just wanted to ask early on so I don't make a fatal mistake and have to redesign it a month before it's due. If you want to see any of my code, just let me know. -Mikey -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
