Android Open Source - mapped Destination Overlay

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License

The source code is released under:

Apache License

Java Source Code

package com.chalmers.frapp;
// w  ww  .j  a  va2s.com
import java.util.List;

import android.content.Context;
import android.graphics.Point;
import android.graphics.drawable.Drawable;
import android.view.Gravity;
import android.widget.Toast;

import com.chalmers.frapp.database.Building;
import com.chalmers.frapp.database.Entrance;
import com.chalmers.frapp.database.LocationDatabase;
import com.chalmers.frapp.database.Room;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.MapView;
import com.google.android.maps.OverlayItem;
import com.google.android.maps.Projection;

public class DestinationOverlay extends ItemizedOverlay<OverlayItem> {

  private final MapView target;
  private final Context context;
  private final LocationDatabase db;
  private String buildingName;
  private String roomName;

  public DestinationOverlay(Context arg0, MapView arg1, Drawable defaultMarker, LocationDatabase arg3) {
    super(boundCenterBottom(defaultMarker));
    context = arg0;
    target = arg1;
    db = arg3;
  }

  public boolean setDestination(String building, String room) {
    buildingName = building;
    roomName = room;
    populate();
    return true;
  }
  
  @Override
  protected OverlayItem createItem(int i) {
    Building b = db.findBuilding(buildingName);
    Room r = b.findRoom(roomName);
    List<Entrance> es = b.findEntrances(roomName);
    
    OverlayItem result;
    if(i == 0) {
      result = (OverlayItem) r;
    } else {
      result = es.get(i - 1);
    }
    return result;
  }

  @Override
  public int size() {
    Building b = db.findBuilding(buildingName);
    //Room r = b.findRoom(roomName); // +1
    List<Entrance> es = b.findEntrances(roomName);

    return es.size() + 1;
  }

  @Override
  public boolean onTap(int index) {
    OverlayItem item = createItem(index);
    Projection p = target.getProjection();
    Point pp = p.toPixels(item.getPoint(), null);
    Toast toast = Toast.makeText(context, item.getTitle() + ":\n" + item.getSnippet(), Toast.LENGTH_LONG);
    toast.setGravity(Gravity.TOP | Gravity.LEFT, pp.x, pp.y);
    toast.show();
    return true;
  }
}

Java Source Code List

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