@Override
protected SchedulePlot doInBackground(SchedulePlot... params) {
// The params[0] element contains the schedulePlot object
SchedulePlot scheduleToPlot = params[0];
// construct a list of geopoints for the schedule
List<GeoPoint> geoPoints = new ArrayList<GeoPoint>();
// sections of given schedule
SortedSet<Section> sectionsOfSchedule = scheduleToPlot.getSections();
// if the schedule has sections all at same location, or have 0 or 1 section,
// then there is no route to be plotted
if (sectionsOfSchedule.size() == 0 || sectionsOfSchedule.size() == 1) {
scheduleToPlot.setRoute(null);
} else {
Iterator<Section> iterator = sectionsOfSchedule.iterator();
Section prev = iterator.next();
while (iterator.hasNext()) {
Section next = iterator.next();
LatLon prevLatLon = prev.getBuilding().getLatLon();
LatLon nextLatLon = next.getBuilding().getLatLon();
geoPoints.addAll(getGeoPoints(getJSON(prevLatLon, nextLatLon)));
prev = next;
}
// set the route of the schedule by setting the geopoints
scheduleToPlot.setRoute(geoPoints);
}
// CPSC 210 Students: Complete this method. This method should
// call the MapQuest webservice to retrieve a List<GeoPoint>
// that forms the routing between the buildings on the
// schedule. The List<GeoPoint> should be put into
// scheduleToPlot object.
return scheduleToPlot;
}
/**
* Plot all buildings referred to in the given information about plotting a schedule.
*
* @param schedulePlot All information about the schedule and route to plot.
*/
private void plotBuildings(SchedulePlot schedulePlot) {
// CPSC 210 Students: Complete this method by plotting each building in the
// schedulePlot with an appropriate message displayed
if (schedulePlot.getSections().size() == 0) {
AlertDialog aDialog = createSimpleDialog("Schedule To Plot Is Empty");
aDialog.show();
} else {
for (Section s : schedulePlot.getSections()) {
plotABuilding(
s.getBuilding(),
"Building: " + s.getBuilding().getName(),
"Schedule for: " + schedulePlot.getName() + " " + s.getCourseInfo(),
schedulePlot.getIcon());
}
}
// CPSC 210 Students: You will need to ensure the buildingOverlay is in
// the overlayManager. The following code achieves this. You should not likely
// need to touch it
OverlayManager om = mapView.getOverlayManager();
om.add(buildingOverlay);
}
@Override
protected void onPostExecute(SchedulePlot schedulePlot) {
// CPSC 210 Students: This method should plot the route onto the map
// with the given line colour specified in schedulePlot. If there is
// no route to plot, a dialog box should be displayed.
// To actually make something show on the map, you can use overlays.
// For instance, the following code should show a line on a map
// PathOverlay po = createPathOverlay("#FFFFFF");
// po.addPoint(point1); // one end of line
// po.addPoint(point2); // second end of line
// scheduleOverlay.add(po);
// OverlayManager om = mapView.getOverlayManager();
// om.addAll(scheduleOverlay);
// mapView.invalidate(); // cause map to redraw
PathOverlay po = createPathOverlay(schedulePlot.getColourOfLine());
// plot buildings of the schedule
plotBuildings(schedulePlot);
// if there is no route, display no route
if (schedulePlot.getRoute() == null) {
AlertDialog aDialog = createSimpleDialog("NO ROUTE TO PLOT");
aDialog.show();
// otherwise plot the route
} else {
// get the list of geopoints of the schedulePlot
List<GeoPoint> points = schedulePlot.getRoute();
for (GeoPoint point : points) {
po.addPoint(point);
}
scheduleOverlay.add(po);
OverlayManager om = mapView.getOverlayManager();
om.addAll(scheduleOverlay);
mapView.invalidate();
}
}