Android Open Source - space-digitizing Navigate_buildingfinder

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Back to project page space-digitizing.

License

The source code is released under:

MIT License

Java Source Code

package com.khajenasir.spacedigitizing;
//  w  w w . ja v  a  2s . c  om
import java.util.ArrayList;
import java.util.List;

import android.content.Intent;
import android.database.Cursor;
import android.graphics.drawable.Drawable;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.KeyEvent;
import android.widget.Toast;

import com.google.android.maps.GeoPoint;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
import com.google.android.maps.MyLocationOverlay;
import com.google.android.maps.OverlayItem;

public class Navigate_buildingfinder extends MapActivity 
{
  int buildingID, FloorNUM;
  private DatabaseHelper db=null;
  private LocationManager mgr=null;
  double _lat, _lon,_alt, cache_lat=0, cache_lon=0;

  @Override
  protected boolean isRouteDisplayed() 
  {
    return false;
  }
  
  private MapView map=null;
  private MyLocationOverlay me=null;
  
    @Override
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.navigate_buildingfinder);
        
      buildingID = getIntent().getExtras().getInt("BuildingID");
      FloorNUM = getIntent().getExtras().getInt("FloorNUM");
      
      db = new DatabaseHelper(this);
      
    mgr=(LocationManager)getSystemService(LOCATION_SERVICE);
               
    map=(MapView)findViewById(R.id.map);
    
    //Tehran Location
    map.getController().setCenter(getPoint(35.6719444, 51.4244444));
    
    map.getController().setZoom(15);
    map.setBuiltInZoomControls(true);
    
    Drawable marker=getResources().getDrawable(R.drawable.marker);
    
    marker.setBounds(0, 0, marker.getIntrinsicWidth(),
    marker.getIntrinsicHeight());
    
    map.getOverlays().add(new SitesOverlay(marker));
    
    me=new MyLocationOverlay(this, map);
    
    
    map.getOverlays().add(me);
    
    
    }
    
  @Override
  public void onResume() {
    super.onResume();
    
    mgr.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 10,  onLocationChange);
    
    me.enableCompass();
  }    
  
  @Override
  public void onPause() {
    super.onPause();
    mgr.removeUpdates(onLocationChange);
    me.disableCompass();
  }
  

  LocationListener onLocationChange=new LocationListener() {
    public void onLocationChanged(Location location) 
    {
      _lat=location.getLatitude();
      _lon=location.getLongitude();
      _alt=location.getAltitude();
      
      map.getController().setCenter(getPoint(_lon, _lat));
      
      //calculte distance
      String[] select = {"ID","X","Y"};
      Cursor cursor = db.SelectTable("tbl_building", select, "ID>=0 and ID=" + buildingID, "ID");
      cursor.moveToFirst();
      

      if(     ((cursor.getDouble(1) - _lat)*(cursor.getDouble(1) - _lat)) + ((cursor.getDouble(2) - _lon)*(cursor.getDouble(2) - _lon)) < 0.000001     )
      {
        Intent buildingFinder = new Intent(Navigate_buildingfinder.this, Navigate_floorfinder.class);
        buildingFinder.putExtra("FloorNUM", FloorNUM);
        buildingFinder.putExtra("BuildingID", buildingID);
          startActivity(buildingFinder);
          finish();
      }
      
    }
    
    public void onProviderDisabled(String provider) 
    {
      // required for interface, not used
    }
    
    public void onProviderEnabled(String provider) 
    {
      // required for interface, not used
    }
    
    public void onStatusChanged(String provider, int status, Bundle extras) 
    {
      // required for interface, not used
    }
  };
  
  @Override
  public boolean onKeyDown(int keyCode, KeyEvent event) 
   {
    if (keyCode == KeyEvent.KEYCODE_S) 
    {
      map.setSatellite(!map.isSatellite());
      return(true);
    }
    else if (keyCode == KeyEvent.KEYCODE_Z) 
    {
      map.displayZoomControls(true);
      return(true);
    }
    
    return(super.onKeyDown(keyCode, event));
  }

  private GeoPoint getPoint(double lat, double lon)
  {
    return(new GeoPoint((int)(lat*1000000.0), (int)(lon*1000000.0)));
  }
    
  private class SitesOverlay extends ItemizedOverlay<OverlayItem> 
  {
    private List<OverlayItem> items=new ArrayList<OverlayItem>();
    //private Drawable marker=null;
    
    public SitesOverlay(Drawable marker) 
    {
      super(marker);
      //this.marker=marker;
      
      boundCenterBottom(marker);
      
      //Load Buildings
      String[] select = {"ID","Name","Shape","X","Y"};
      Cursor cursor = db.SelectTable("tbl_building", select, "ID>=0", "ID");
      cursor.moveToFirst();
      
          for(int i=0;i<cursor.getCount();i++)
          { 

        items.add(new OverlayItem(getPoint(cursor.getDouble(3), cursor.getDouble(4)), cursor.getString(2), cursor.getString(1)));

            cursor.moveToNext();
          }

      populate();
    }
    
    @Override
    protected OverlayItem createItem(int i) 
    {
      return(items.get(i));
    }
    
    @Override
    protected boolean onTap(int i) 
    {
      Toast.makeText(Navigate_buildingfinder.this, items.get(i).getSnippet(), Toast.LENGTH_SHORT).show();
      
      return(true);
    }
    
    @Override
    public int size() 
    {
      return(items.size());
    }
  }

}

Java Source Code List

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