Custom Location Overlay : Location « Hardware « Android

1. Android
2. Hardware
3. Location

Custom Location Overlay

 

package app.test;

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

import android.os.Bundle;

import android.content.Context;
import android.location.Location;
import android.util.Log;

import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapView;
import com.google.android.maps.MyLocationOverlay;

 class MyCustomLocationOverlay extends MyLocationOverlay {
    MapView mMapView = null;
    
  public MyCustomLocationOverlay(Context ctx, MapView mapView) {
    super(ctx, mapView);
    mMapView = mapView;
  }

  public void onLocationChanged(Location loc) {
    super.onLocationChanged(loc);
    GeoPoint newPt = new GeoPoint((int) (loc.getLatitude()*1E6),
        (int) (loc.getLongitude()*1E6));
    Log.v("MyCustomLocationOverlay", "Got new location: " + newPt);
    mMapView.getController().animateTo(newPt);
  }
}

public class MyLocationDemoActivity extends MapActivity {
    
    MapView mapView = null;
    MapController mapController = null;
    MyLocationOverlay whereAmI = null;

    @Override
    protected boolean isLocationDisplayed() {
        return whereAmI.isMyLocationEnabled();
    }

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

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        mapView = (MapView)findViewById(R.id.geoMap);
        mapView.setBuiltInZoomControls(true);
        
        mapController = mapView.getController();
        mapController.setZoom(15);

        whereAmI = new MyCustomLocationOverlay(this, mapView);
    mapView.getOverlays().add(whereAmI);
    mapView.postInvalidate();
    }

    @Override
    public void onResume()
    {
      super.onResume();
        whereAmI.enableMyLocation();
    whereAmI.runOnFirstFix(new Runnable() {
            public void run() {
                mapController.setCenter(whereAmI.getMyLocation());
            }
        });
    }

    @Override
    public void onPause()
    {
      super.onPause();
        whereAmI.disableMyLocation();
    }
}

//main.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- This file is /res/layout/main.xml -->
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">

    <com.google.android.maps.MapView
        android:id="@+id/geoMap" android:clickable="true"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:apiKey="yourMapKey"
        />

</RelativeLayout>

   
  

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