public void actionPerformed(ActionEvent e) {
Command cmd = e.getCommand();
if (cmd != null) {
// Free some memory
freeThumbnails();
}
/* Handle different commands */
if (cmd == aboutCommand) {
midlet.showAboutView();
} else if (cmd == helpCommand) {
midlet.showHelpView();
} else if (cmd == guidesCommand) {
midlet.showGuideView();
} else if (cmd == mapCommand) {
GeoCoordinate loc = Self.getCurrentPosition();
if (loc != null) {
midlet.showMapView(guide, null, loc.getLatitude(), loc.getLongitude(), "My location");
} else {
Util.showAlert("Location error", "Could not get your location.");
}
} else if (cmd == selectCommand) {
attractionList.actionPerformed(new ActionEvent(attractionList));
} else if (cmd == backCommand) {
Display.getInstance().exitApplication();
}
}
/**
* Sets tweet position randomly within radius
*
* @param tweet the tweet data
*/
private void randomPlaceWithinRadius(Tweet tweet) {
double radius = config.getRadius();
double maxDegreeDiff = radius / SURFACE_DISTANCE;
double latR = random.nextDouble();
double lonR = random.nextDouble();
latR = (latR - 0.5) * 2; // -1 to 1
lonR = (lonR - 0.5) * 2; // -1 to 1
GeoCoordinate sc = config.getPosition();
GeoCoordinate gc =
new GeoCoordinate(
sc.getLatitude() + latR * maxDegreeDiff, sc.getLongitude() + lonR * maxDegreeDiff, 0);
tweet.setUserCoordinate(gc);
}