public Location getLocation(int timeout) throws LocationException, InterruptedException { /* TODO The timeout might play to the fact that it is still acquiring satellites? * I was wondering about that before. Maybe it makes sense to have timeout in SimpleGPS? * TODO: Solution! Keep asking for altitude until is positive? (longitude can be negative) * Or perhaps just until speed positive? (set those after) * TODO: -1 in timeout is supposed to represent the default timeout (GPSListener?) * TODO: I don't know if this is supposed to wait for the GPS to provide a new * coordinate data or if it is okay to pass the latest cached GPS coordinates. * Is the purpose of the timeout that it gets a new updated location that * is not the previously returned or cached one? */ if (timeout == 0) throw new IllegalArgumentException("timeout cannot equal 0"); // Timeout results in LocationException: long startTime = System.currentTimeMillis(); // TODO: Perhaps initialize and test for NaN instead. while (gps.getLatitude() == 0 & gps.getLongitude() == 0) { if (timeout != -1 & System.currentTimeMillis() - startTime > (timeout * 1000)) throw new LocationException("GPS timed out"); Thread.sleep(100); /* NOTE: This might very occasionally cause an error because * Thread.yield() seems to cause sentence parsing to start too soon. * (try changing sleep() to yield() to see what happens) * Perhaps something needs to be synchronized? */ } QualifiedCoordinates qc = new QualifiedCoordinates( gps.getLatitude(), gps.getLongitude(), gps.getAltitude(), (gps.getHDOP() * 6), (gps.getVDOP() * 6)); Location loc = new Location( qc, gps.getSpeed(), gps.getCourse(), gps.getTimeStamp(), 0, null); // TODO: Implement location method and extraInfo (0 and null for now) return loc; }