Google Map with multiple marks at Click on map

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"
    >

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

</RelativeLayout>



Java Code


public class MainActivity extends FragmentActivity {


GoogleMap googleMap;
SharedPreferences sharedPreferences;
   int locationCount = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
     
     
        // Getting Google Play availability status
        int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getBaseContext());

        // Showing status
        if(status!=ConnectionResult.SUCCESS)
        { // Google Play Services are not available

            int requestCode = 10;
            Dialog dialog = GooglePlayServicesUtil.getErrorDialog(status, this, requestCode);
            dialog.show();

        }
        else
        { // Google Play Services are available

            // 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);

            // Opening the sharedPreferences object
            sharedPreferences = getSharedPreferences("location", 0);

            // Getting number of locations already stored
            locationCount = sharedPreferences.getInt("locationCount", 0);

            // Getting stored zoom level if exists else return 0
            String zoom = sharedPreferences.getString("zoom", "0");

            // If locations are already saved
            if(locationCount!=0){

                String lat = "";
                String lng = "";

                // Iterating through all the locations stored
                for(int i=0;i<locationCount;i++){

                    // Getting the latitude of the i-th location
                    lat = sharedPreferences.getString("lat"+i,"0");

                    // Getting the longitude of the i-th location
                    lng = sharedPreferences.getString("lng"+i,"0");

                    // Drawing marker on the map
                    drawMarker(new LatLng(Double.parseDouble(lat), Double.parseDouble(lng)));
                }

                // Moving CameraPosition to last clicked position
                googleMap.moveCamera(CameraUpdateFactory.newLatLng(new LatLng(Double.parseDouble(lat), Double.parseDouble(lng))));

                // Setting the zoom level in the map on last position  is clicked
                googleMap.animateCamera(CameraUpdateFactory.zoomTo(Float.parseFloat(zoom)));
            }
        }

        googleMap.setOnMapClickListener(new OnMapClickListener() {

            @Override
            public void onMapClick(LatLng point) {
                locationCount++;

                // Drawing marker on the map
                drawMarker(point);

                /** Opening the editor object to write data to sharedPreferences */
                SharedPreferences.Editor editor = sharedPreferences.edit();

                // Storing the latitude for the i-th location
                editor.putString("lat"+ Integer.toString((locationCount-1)), Double.toString(point.latitude));

                // Storing the longitude for the i-th location
                editor.putString("lng"+ Integer.toString((locationCount-1)), Double.toString(point.longitude));

                // Storing the count of locations or marker count
                editor.putInt("locationCount", locationCount);

                /** Storing the zoom level to the shared preferences */
                editor.putString("zoom", Float.toString(googleMap.getCameraPosition().zoom));

                /** Saving the values stored in the shared preferences */
                editor.commit();

                Toast.makeText(getBaseContext(), "Marker is added to the Map", Toast.LENGTH_SHORT).show();

            }
        });

        googleMap.setOnMapLongClickListener(new OnMapLongClickListener() {
            @Override
            public void onMapLongClick(LatLng point) {

                // Removing the marker and circle from the Google Map
                googleMap.clear();

                // Opening the editor object to delete data from sharedPreferences
                SharedPreferences.Editor editor = sharedPreferences.edit();

                // Clearing the editor
                editor.clear();

                // Committing the changes
                editor.commit();

                // Setting locationCount to zero
                locationCount=0;

            }
        });
    }

    private void drawMarker(LatLng point){
        // Creating an instance of MarkerOptions
        MarkerOptions markerOptions = new MarkerOptions();

        // Setting latitude and longitude for the marker
        markerOptions.position(point);

        // Adding marker on the Google Map
        googleMap.addMarker(markerOptions);
    }

 

}


Mainifast XML


<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.mapwithmultipalmarks"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />

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

 
 
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".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="AIzaSyAEmq9Ag26cjIe_pYybYrRWSNz8scOAd64" />
    </application>


</manifest>