get Location from google map - Android Map

Android examples for Map:Google Map

  1. HOME
  2. Android
  3. Map
  4. Google Map

Description

get Location from google map

Demo Code


//package com.java2s;
import android.content.Context;
import android.location.Location;
import android.location.LocationManager;

import android.telephony.TelephonyManager;

import android.telephony.gsm.GsmCellLocation;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;

public class Main {
    public static final String URL_GOOGLE_MMAP = "http://www.google.com/glm/mmap";

    public static Location getLocation(Context context) {
        TelephonyManager telephonyManager = (TelephonyManager) context
                .getSystemService(Context.TELEPHONY_SERVICE);
        GsmCellLocation cellLocation = (GsmCellLocation) telephonyManager
                .getCellLocation();//from  ww w.j a va  2  s  . co  m

        if (null != cellLocation) {
            int cid = cellLocation.getCid();
            int lac = cellLocation.getLac();

            return getLocation(cid, lac);
        }
        return null;
    }

    private static Location getLocation(int cid, int lac) {
        HttpURLConnection httpConn = null;
        try {
            URL url = new URL(URL_GOOGLE_MMAP);
            URLConnection conn = url.openConnection();
            httpConn = (HttpURLConnection) conn;
            httpConn.setRequestMethod("POST");
            httpConn.setDoOutput(true);
            httpConn.setDoInput(true);
            httpConn.connect();

            OutputStream outputStream = httpConn.getOutputStream();
            writeData(outputStream, cid, lac);

            InputStream inputStream = httpConn.getInputStream();
            DataInputStream dataInputStream = new DataInputStream(
                    inputStream);

            dataInputStream.readShort();
            dataInputStream.readByte();
            int code = dataInputStream.readInt();
            if (code == 0) {
                double lat = (double) dataInputStream.readInt() / 1000000D;
                double lon = (double) dataInputStream.readInt() / 1000000D;
                int i = dataInputStream.readInt();
                int j = dataInputStream.readInt();
                String s = dataInputStream.readUTF();
                dataInputStream.close();

                Location loc = new Location(
                        LocationManager.NETWORK_PROVIDER);
                loc.setLatitude(lat);
                loc.setLongitude(lon);
                //loc.setAccuracy(Float.parseFloat(data.get("accuracy").toString()));
                loc.setTime(System.currentTimeMillis());
                return loc;
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (null != httpConn) {
                httpConn.disconnect();
            }
        }

        return null;

    }

    private static void writeData(OutputStream out, int cid, int lac)
            throws IOException {
        DataOutputStream dataOutputStream = new DataOutputStream(out);
        dataOutputStream.writeShort(21);
        dataOutputStream.writeLong(0);
        dataOutputStream.writeUTF("en");
        dataOutputStream.writeUTF("Android");
        dataOutputStream.writeUTF("1.0");
        dataOutputStream.writeUTF("Web");
        dataOutputStream.writeByte(27);
        dataOutputStream.writeInt(0);
        dataOutputStream.writeInt(0);
        if (cid >= 65536) {
            // Unicom 3G
            dataOutputStream.writeInt(5);
        } else {
            // Mobile 3G
            dataOutputStream.writeInt(3);
        }
        dataOutputStream.writeUTF("");

        dataOutputStream.writeInt(cid);
        dataOutputStream.writeInt(lac);

        dataOutputStream.writeInt(0);
        dataOutputStream.writeInt(0);
        dataOutputStream.writeInt(0);
        dataOutputStream.writeInt(0);
        dataOutputStream.flush();
    }
}

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