Adding Marker at user input latitude and longitude in Google Map Android API V2

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>
       
        <activity
            android:name="com.mapv2.demo.MapDemoActivity"
            android:label="@string/app_name" >
        </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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <EditText
        android:id="@+id/et_lat"
          android:layout_width="fill_parent"
          android:layout_height="wrap_content"
          android:inputType="numberDecimal|numberSigned"
          android:hint="@string/hnt_lat" />
   
    <EditText
        android:id="@+id/et_lng"
          android:layout_width="fill_parent"
          android:layout_height="wrap_content"
          android:inputType="numberDecimal|numberSigned"
          android:layout_below="@id/et_lat"
          android:hint="@string/hnt_lng" />
   
    <Button
        android:id="@+id/btn_show"
          android:layout_width="fill_parent"
          android:layout_height="wrap_content"
          android:text="@string/str_btn_show"
          android:layout_below="@id/et_lng" />   

</RelativeLayout>

1.)  activity_map.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 android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends FragmentActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
       
        // Getting reference to button btn_show
        Button btnShow = (Button) findViewById(R.id.btn_show);
       
        // Setting click event listener for the button
        btnShow.setOnClickListener(new OnClickListener() {           
            @Override
            public void onClick(View v) {
                double lat=0;
                double lng=0;
               
                // Getting reference to EditText et_lat
                EditText etLat = (EditText) findViewById(R.id.et_lat);
               
                // Validating User Input
                if(etLat.getText().toString().isEmpty()){
                    Toast.makeText(getBaseContext(), "Please Enter Latitude", Toast.LENGTH_SHORT).show();
                   
                    // Focus the EditText for Latitude
                    etLat.requestFocus();
                   
                    return;
                }else{
                    // Getting user input latitude
                    lat = Double.parseDouble(etLat.getText().toString());
                }
               
               
                // Getting reference to EditText et_lng
                EditText etLng = (EditText) findViewById(R.id.et_lng);               
               
                // Validating User Input
                if(etLng.getText().toString().isEmpty()){
                    Toast.makeText(getBaseContext(), "Please Enter Longitude", Toast.LENGTH_SHORT).show();
                   
                    // Focus the EditText for Longitude
                    etLng.requestFocus();
                   
                    return;
                }else{
                    // Getting user input longitude
                    lng = Double.parseDouble(etLng.getText().toString());
                }               
               
                Intent intent = new Intent(getBaseContext(), MapDemoActivity.class);
               
                // Passing latitude and longitude to the MapActiv
                intent.putExtra("lat", lat);
                intent.putExtra("lng", lng);
               
                startActivity(intent);               
            }
        });
       
    }

    @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;
    }
}







1.) MapDemoActivity.java

package com.mapv2.demo;

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

import com.google.android.gms.maps.CameraUpdate;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;

public class MapDemoActivity extends FragmentActivity{
   
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_map);
       
        // Receiving latitude from MainActivity screen
        double latitude = getIntent().getDoubleExtra("lat", 0);
       
        // Receiving longitude from MainActivity screen
        double longitude = getIntent().getDoubleExtra("lng", 0);
       
        LatLng position = new LatLng(latitude, longitude);
       
        // Instantiating MarkerOptions class
        MarkerOptions options = new MarkerOptions();
       
        // Setting position for the MarkerOptions
        options.position(position);
       
        // Setting title for the MarkerOptions
        options.title("Position");
       
        // Setting snippet for the MarkerOptions
        options.snippet("Latitude:"+latitude+",Longitude:"+longitude);
       
        // Getting Reference to SupportMapFragment of activity_map.xml
        SupportMapFragment fm = (SupportMapFragment)getSupportFragmentManager().findFragmentById(R.id.map);
       
        // Getting reference to google map
        GoogleMap googleMap = fm.getMap();
       
        // Adding Marker on the Google Map
        googleMap.addMarker(options);
       
        // Creating CameraUpdate object for position
        CameraUpdate updatePosition = CameraUpdateFactory.newLatLng(position);
       
        // Creating CameraUpdate object for zoom
        CameraUpdate updateZoom = CameraUpdateFactory.zoomBy(4);
       
        // Updating the camera position to the user input latitude and longitude
        googleMap.moveCamera(updatePosition);
       
        // Applying zoom to the marker position
        googleMap.animateCamera(updateZoom);       
    }

    @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/map11.zip