Google Maps Android API V2 showing current location with marker and camera zoom

Step 1: Create API key For reference go to http://swamysandroid.blogspot.in/2015/02/generate-api-key-for-android.html

Step 2: Write the following code in Respective file

activty_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    xmlns:map="http://schemas.android.com/apk/res-auto"

    android:id="@+id/LinearLayout1"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    tools:context=".MainActivity" >

    <fragment

        android:id="@+id/map_container"

        android:name="com.google.android.gms.maps.MapFragment"

        android:layout_width="match_parent"

        android:layout_height="match_parent" />

</LinearLayout>

MainActivity.java

package com.swamy.mapsv2;

import android.annotation.SuppressLint;

import android.app.Activity;

import android.location.Location;

import android.location.LocationListener;

import android.location.LocationManager;

import android.os.Bundle;

import com.google.android.gms.maps.CameraUpdateFactory;

import com.google.android.gms.maps.GoogleMap;

import com.google.android.gms.maps.MapFragment;

import com.google.android.gms.maps.model.LatLng;

import com.google.android.gms.maps.model.MarkerOptions;

public class MainActivity extends Activity {

       GoogleMap map;

       double x, y;

       @SuppressLint("NewApi")

       @Override

       protected void onCreate(Bundle savedInstanceState) {

              super.onCreate(savedInstanceState);

              setContentView(R.layout.activity_main);

              map = ((MapFragment) getFragmentManager().findFragmentById(

                           R.id.map_container)).getMap();

              // map.setMapType(GoogleMap.MAP_TYPE_HYBRID);

              // map.setMapType(GoogleMap.MAP_TYPE_NONE);

              map.setMapType(GoogleMap.MAP_TYPE_NORMAL);

              // map.setMapType(GoogleMap.MAP_TYPE_SATELLITE);

              // map.setMapType(GoogleMap.MAP_TYPE_TERRAIN);

              LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);

              LocationListener listener = new LocationListener() {

                     @Override

                     public void onStatusChanged(String provider, int status,

                                  Bundle extras) {

                           // TODO Auto-generated method stub

                     }

                     @Override

                     public void onProviderEnabled(String provider) {

                           // TODO Auto-generated method stub

                     }

                     @Override

                     public void onProviderDisabled(String provider) {

                           // TODO Auto-generated method stub

                     }

                     @Override

                     public void onLocationChanged(Location location) {

                           // TODO Auto-generated method stub

                            y = location.getLongitude();

                           x = location.getLatitude();

                           MarkerOptions options = new MarkerOptions();

                           options.position(new LatLng(x, y));

                           options.title("Madhapur");

                           map.addMarker(options);

                           map.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(

                                         x, y), 16));

                     }

              };

              locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,

                           1000, 1, listener);

       }

}

manifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.swamy.mapsv2"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="9"

        android:targetSdkVersion="18" />

   

    <uses-feature

        android:glEsVersion="0x00020000"

        android:required="true" />

    <uses-permission android:name="android.permission.INTERNET" />

    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />

    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

    <permission

        android:name="your application package.permission.MAPS_RECEIVE"

        android:protectionLevel="signature" />

    <uses-permission android:name="your application package.permission.MAPS_RECEIVE" />

    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

        <activity

            android:name="you application package.MainActivity"

            android:label="@string/app_name" >

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

       

        <meta-data

            android:name="com.google.android.gms.version"

            android:value="@integer/google_play_services_version" />

         <meta-data

            android:name="com.google.android.maps.v2.API_KEY"

            android:value="your API key" />

        

    </application>

</manifest>