Android Open Source - android_network_discovery Discover Activity

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Back to project page android_network_discovery.

License

The source code is released under:

GNU General Public License

Java Source Code

package info.lamatricexiste.network;
/*  w  w  w .  ja  va 2s  .co  m*/
import java.util.ArrayList;
import java.util.List;

import org.osmdroid.DefaultResourceProxyImpl;
import org.osmdroid.ResourceProxy;
import org.osmdroid.util.GeoPoint;
import org.osmdroid.views.MapView;
import org.osmdroid.views.overlay.ItemizedIconOverlay;
import org.osmdroid.views.overlay.OverlayItem;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Canvas;
import android.graphics.Point;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.Toast;

public class DiscoverActivity extends Activity implements LocationListener {
  private DefaultResourceProxyImpl defaultResourceProxyImpl;
  private MyItemizedIconOverlay myItemizedIconOverlay;
  private LocationManager locationManager;
  private String provider;
  public static float lat, lng;
  public static float speed, accuracy, bearing;
  public static double altitude;
  public static String providers;
  private GeoPoint point;
  private static MapView mapView;
  ArrayList<OverlayItem> overlayItemArray = new ArrayList<OverlayItem>();
  private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10;
  // The minimum time between updates in milliseconds
  private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1;
  DatabaseHelper db;
  @Override
  public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    db = new DatabaseHelper(getApplicationContext());
    locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

    Criteria criteria = new Criteria();
    Location location = locationManager
        .getLastKnownLocation(LocationManager.GPS_PROVIDER);
    provider = locationManager.getBestProvider(criteria, true);
    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
        MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES, this);

    // Initialize the location fields
    if (location != null) {
      updateLoc(location);
    }

    mapView = new MapView(this, 256); // Constructor
    mapView.setClickable(true);
    // mapView.setBuiltInZoomControls(true);
    point = new GeoPoint(lat, lng);
    //mapView.getController().setZoom(20); // Initial Zoom Level
    mapView.getController().setCenter(point);
    mapView.setMultiTouchControls(true);
    mapView.setUseDataConnection(true); // True=>Use Data Connection
    Button btn = new Button(this);
    btn.setText("Next");
    btn.setTextAppearance(getApplicationContext(), R.style.ButtonTop);
    btn.setBackgroundResource(R.drawable.arrow_right);
    btn.setBackgroundColor(getResources().getColor(
        android.R.color.background_dark));
    btn.setTextColor(getResources().getColor(android.R.color.white));
    final RelativeLayout relativeLayout = new RelativeLayout(this);
    final RelativeLayout.LayoutParams mapViewLayoutParams = new RelativeLayout.LayoutParams(
        RelativeLayout.LayoutParams.MATCH_PARENT,
        RelativeLayout.LayoutParams.MATCH_PARENT);
    final RelativeLayout.LayoutParams buttonLayoutParams = new RelativeLayout.LayoutParams(
        RelativeLayout.LayoutParams.MATCH_PARENT,
        RelativeLayout.LayoutParams.WRAP_CONTENT);
    buttonLayoutParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
    relativeLayout.addView(mapView, mapViewLayoutParams);
    relativeLayout.addView(btn, buttonLayoutParams);
    setContentView(relativeLayout);
    defaultResourceProxyImpl = new DefaultResourceProxyImpl(this);
    myItemizedIconOverlay = new MyItemizedIconOverlay(overlayItemArray,
        null, defaultResourceProxyImpl);
    mapView.getOverlays().add(myItemizedIconOverlay);
    btn.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View view) {
        startActivity(new Intent(DiscoverActivity.this, ActivityMain.class));
      }
    });
  }

  /* Request updates at startup */
  @Override
  protected void onResume() {
    super.onResume();
    locationManager.requestLocationUpdates(provider, 400, 1, this);
  }

  /* Remove the locationlistener updates when Activity is paused */
  @Override
  protected void onPause() {
    super.onPause();
    locationManager.removeUpdates(this);
  }

  @Override
  public void onLocationChanged(Location location) {
    speed = location.getSpeed();
    providers = location.getProvider();
    altitude = location.getAltitude();
    accuracy = location.getAccuracy();
    bearing = location.getBearing();
    System.out.println(""+speed);
    updateLoc(location);
  }

  private void updateLoc(Location location) {
    lat = (float) (location.getLatitude());
    lng = (float) (location.getLongitude());
    setOverlayLoc(location);
  }

  private void setOverlayLoc(Location overlayloc) {

    GeoPoint overlocGeoPoint = new GeoPoint(overlayloc);
    OverlayItem newMyLocationItem = new OverlayItem("My Location",
        "My Location", overlocGeoPoint);
    overlayItemArray.clear();
    overlayItemArray.add(newMyLocationItem);
  }

  @Override
  public void onStatusChanged(String provider, int status, Bundle extras) {

  }

  @Override
  public void onProviderEnabled(String provider) {
    Toast.makeText(this, "Enabled new provider " + provider,
        Toast.LENGTH_SHORT).show();
  }

  @Override
  public void onProviderDisabled(String provider) {
    Toast.makeText(this, "Disabled provider " + provider,
        Toast.LENGTH_SHORT).show();
  }

  private class MyItemizedIconOverlay extends
      ItemizedIconOverlay<OverlayItem> {

    public MyItemizedIconOverlay(
        List<OverlayItem> pList,
        org.osmdroid.views.overlay.ItemizedIconOverlay.OnItemGestureListener<OverlayItem> pOnItemGestureListener,
        ResourceProxy pResourceProxy) {
      super(pList, pOnItemGestureListener, pResourceProxy);

    }

    @Override
    public void draw(Canvas canvas, MapView mapview, boolean arg2) {

      super.draw(canvas, mapview, arg2);

      if (!overlayItemArray.isEmpty()) {

        // overlayItemArray have only ONE element so I hard code to
        // get(0)
        GeoPoint in = overlayItemArray.get(0).getPoint();

        Point out = new Point();
        mapview.getProjection().toPixels(in, out);
      }
    }

    @Override
    public boolean onSingleTapUp(MotionEvent event, MapView mapView) {
      return true;
    }
  }

}

Java Source Code List

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