Drawing Polyline and Markers along the tapped positions in Google Map Android API V2 using ArrayList

Step 1 :- Create New Android Project.



Step 2 :- Add Google-play-services_lib to your project.

Step 3 :- Open AndroidManifest.xml file.

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.mapv2.demo"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />
   
    <permission
          android:name="com.mapv2.demo.permission.MAPS_RECEIVE"
          android:protectionLevel="signature"/>
   
    <uses-permission android:name="com.mapv2.demo.permission.MAPS_RECEIVE"/>
   
    <uses-permission android:name="android.permission.INTERNET"/>
    <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"/>
   
    <uses-feature
          android:glEsVersion="0x00020000"
          android:required="true"/>

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.mapv2.demo.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.maps.v2.API_KEY"
            android:value="AIzaSyCmX7SLVHXxU9pSqb2QbAOvdnjAGUulOrk"/>
       
    </application>

</manifest>

Step 4 :- Open activity_main.xml.

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >  

    <fragment
        android:id="@+id/map"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          class="com.google.android.gms.maps.SupportMapFragment"
          />
   
</RelativeLayout>

Step 5 :- Open MainActivity.java

package com.mapv2.demo;

import java.util.ArrayList;

import android.graphics.Color;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.Menu;

import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.GoogleMap.OnMapClickListener;
import com.google.android.gms.maps.GoogleMap.OnMapLongClickListener;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.android.gms.maps.model.PolylineOptions;

public class MainActivity extends FragmentActivity {
   
   
   
    GoogleMap googleMap;
    ArrayList<LatLng> points;
   

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);   
       
        points = new ArrayList<LatLng>();
       
       
        // Getting reference to the SupportMapFragment of activity_main.xml
        SupportMapFragment fm = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
                   
        // Getting GoogleMap object from the fragment
        googleMap = fm.getMap();
                   
        // Enabling MyLocation Layer of Google Map
        googleMap.setMyLocationEnabled(true);
       
       
        // Setting OnClick event listener for the Google Map
        googleMap.setOnMapClickListener(new OnMapClickListener() {
           
            @Override
            public void onMapClick(LatLng point) {
               
                // Instantiating the class MarkerOptions to plot marker on the map
                MarkerOptions markerOptions = new MarkerOptions();
               
                // Setting latitude and longitude of the marker position
                markerOptions.position(point);
               
                // Setting titile of the infowindow of the marker
                markerOptions.title("Position");
               
                // Setting the content of the infowindow of the marker
                markerOptions.snippet("Latitude:"+point.latitude+","+"Longitude:"+point.longitude);
               
               
               
                // Instantiating the class PolylineOptions to plot polyline in the map
                PolylineOptions polylineOptions = new PolylineOptions();
               
                // Setting the color of the polyline
                polylineOptions.color(Color.RED);
               
                // Setting the width of the polyline
                polylineOptions.width(3);
               
                // Adding the taped point to the ArrayList
                points.add(point);
               
                // Setting points of polyline
                polylineOptions.addAll(points);
               
                // Adding the polyline to the map
                googleMap.addPolyline(polylineOptions);
               
                // Adding the marker to the map
                googleMap.addMarker(markerOptions);               
           
            }
        });   
       
        googleMap.setOnMapLongClickListener(new OnMapLongClickListener() {
           
            @Override
            public void onMapLongClick(LatLng point) {
                // Clearing the markers and polylines in the google map
                googleMap.clear();
               
                // Empty the array list
                points.clear();               
            }
        });   
       
    }       
   

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}

Step 6 :- Run Code.

Step 7 :- Download Code :- https://dl.dropboxusercontent.com/u/109954727/Map/map12.zip