Android Display Google Map in Android Device?

GETTING KEY FROM GOOGLE CONSOLE

Before we create Application Generate API key in  Google API Console .

1. Now open Google API Console

2. Select Services on left side and turn on Google Maps Android API v2

3. Now select API Access on left side and on the right side click on Create new Android key…

4.  I have given like below

BE:03:E1:44:39:7B:E8:17:02:9F:7F:B7:98:82:EA:DF:84:D0:FB:6A;com.example.name

And note down the API key which required later in our project.

After that we can write code like this.

MAINACTIVITY.JAVA

1. public class MainActivity extends FragmentActivity {
   // Google Map
   private GoogleMap googleMap;
   
   
   @Override
   protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.activity_main);
   
   
   try {
   // Loading map
   initializeMap();
   } catch (Exception e) {
   e.printStackTrace();
   }
   }
   /**
    * function to load map. If map is not created it will create it for you
    * */
   private void initializeMap() {
   if (googleMap == null) {
   googleMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();
   // check if map is created successfully or not
   if (googleMap == null) {
   Toast.makeText(getApplicationContext(),"Sorry! unable to create maps", Toast.LENGTH_SHORT).show();
   }
   }
   }
   
   
   @Override
   protected void onResume() {
   super.onResume();
   initializeMap();
   }
   }

XML.JAVA

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

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

       android:layout_width="fill_parent"

       android:layout_height="fill_parent" >

   
   

       <fragment

           android:id="@+id/map"

           class="com.google.android.gms.maps.SupportMapFragment"

           android:layout_width="match_parent"

           android:layout_height="match_parent"/>

   
   

   </RelativeLayout>

Finally we add Manifest.xml file

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

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

       package="com.googlemaps.nag"

       android:versionCode="1"

       android:versionName="1.0" >

   
   

       <permission

           android:name="com.googlemaps.nag.permission.MAPS_RECEIVE"

           android:protectionLevel="signature" />

   
   

       <uses-permission android:name="com.googlemaps.nag.permission.MAPS_RECEIVE" />

   
   

       <uses-sdk

           android:minSdkVersion="12"

           android:targetSdkVersion="18" />

   
   

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

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

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

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

   
   

       <!-- Required to show current location -->

       <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.googlemaps.nag.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="YOUR API KEY" />

           <meta-data

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

               android:value="4323000" />  // depending on the version value 

       </application>

   
   

   </manifest>
2. 
   

OUTPUT