CameraMapActivity.java :  » App » trafikkameraandroid » se » peterbjorkman » android » trafikkamera » Android Open Source

package se.peterbjorkman.android.trafikkamera;

import java.util.List;

import se.peterbjorkman.android.trafikkamera.CameraMapOverlay.OnTapListener;
import se.peterbjorkman.android.trafikkamera.providers.CameraContentProvider;
import se.peterbjorkman.android.trafikkamera.providers.CameraDefs;

import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.database.Cursor;
import android.graphics.drawable.Drawable;
import android.os.Bundle;

import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
import com.google.android.maps.MyLocationOverlay;
import com.google.android.maps.Overlay;

public class CameraMapActivity extends MapActivity {
    private MyLocationOverlay mMyLocationOverlay;
    private CameraMapOverlay mItemizedoverlay;

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.map_layout);

        MapView mapView = (MapView) findViewById(R.id.mapview);
        mapView.setBuiltInZoomControls(true);
        
        List<Overlay> mapOverlays = mapView.getOverlays();
        Drawable drawable = this.getResources().getDrawable(R.drawable.icon);
        mItemizedoverlay = new CameraMapOverlay(drawable);
        
        addCameraMarkers();

        mMyLocationOverlay = new MyLocationOverlay(getApplicationContext(), mapView);
        
        mapOverlays.add(mItemizedoverlay);
        mapOverlays.add(mMyLocationOverlay);
        
        mItemizedoverlay.setOnTapListener(new OnTapListener() {
            
            @Override
            public void onTap(CameraOverlayItem item) {
                long id = item.getId();
                Context context = CameraMapActivity.this;
                Intent launchIntent = new Intent(context,
                        CameraPictureActivity.class);
                launchIntent.putExtra(CameraPictureActivity.EXTRA_ID, id);
                context.startActivity(launchIntent);
            }
        });
        
    }
    
    @Override
    protected void onResume(){
        super.onResume();
        
        mMyLocationOverlay.enableCompass();
        mMyLocationOverlay.enableMyLocation();
    }
    
    @Override
    protected void onPause(){
        super.onPause();

        mMyLocationOverlay.disableCompass();
        mMyLocationOverlay.disableMyLocation();
    }
    
  private void addCameraMarkers() {
        CameraMapOverlay itemizedoverlay = mItemizedoverlay;

        itemizedoverlay.clearOverlayItems();
        
        Cursor cursor = getCursor();
        Resources resources = getResources();
        
        while (cursor.moveToNext()){
            Double longitude = cursor.getDouble(cursor.getColumnIndexOrThrow(CameraDefs.LONGITUDE));
            Double latitude  = cursor.getDouble(cursor.getColumnIndexOrThrow(CameraDefs.LATITUDE));
            long id           = cursor.getLong(cursor.getColumnIndexOrThrow(CameraDefs.ID));
            
            addCamera(itemizedoverlay, resources, longitude, latitude, id);
        }
        
        cursor.close();
  }

  private Cursor getCursor() {
    String[] projection = new String[] { 
        CameraDefs.LONGITUDE,
        CameraDefs.LATITUDE,
        CameraDefs.ID };
    
    String filter = CameraDefs.LATITUDE + " IS NOT NULL AND " + CameraDefs.LONGITUDE + " IS NOT NULL";
    
        return managedQuery(
            CameraContentProvider.CONTENT_URI, 
            projection, 
            filter, 
            null, 
            null);
  }

  private void addCamera(CameraMapOverlay itemizedoverlay,
      Resources resources, Double longitude, Double latitude, long id) {
        Drawable icon = resources.getDrawable(R.drawable.icon);
        CameraOverlayItem overlayitem = new CameraOverlayItem(id, longitude, latitude, icon);
        
        itemizedoverlay.addOverlayItem(overlayitem);
    
  }

  @Override
  protected boolean isRouteDisplayed() {
    return false;
  }

}