Google Map API v2 is not showing Map on device

Question

I am running sample code that is provided on Google Map Documentation for Google Map Api v2 (https://developers.google.com/maps/documentation/android/start#specify_settings_in_the_application_manifest).

The code run successfully but Map is not loaded on the device. Only white screen is shown on the device. I am using 4.0.3 version Android device.

1) I enabled service for the project.

2) Generated key:

3) "google-play-services_lib" as Library in project:

4) Android Manifest:

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="com.example.mapdemo"     android:versionCode="1"     android:versionName="1.0" >      <uses-sdk         android:minSdkVersion="8"         android:targetSdkVersion="17" />      <uses-feature         android:glEsVersion="0x00020000"         android:required="true" />      <permission         android:name="com.example.mapdemo.permission.MAPS_RECEIVE"         android:protectionLevel="signature" />      <uses-permission android:name="com.example.mapdemo.permission.MAPS_RECEIVE" />     <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" />      <application         android:allowBackup="true"         android:icon="@drawable/ic_launcher"         android:label="@string/app_name"         android:theme="@style/AppTheme" >          <meta-data             android:name="com.google.android.maps.v2.API_KEY"             android:value="AIzaSyCvZrhQ8YBfyYBvTic3DSdu2O06nAmhpg4" />          <activity             android:name="com.example.mapdemo.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>     </application> </manifest> 

5) Activity:

package com.example.mapdemo;  import android.app.Activity; import android.os.Bundle; import android.view.Menu;  public class MainActivity extends Activity  {      @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.main);           }     @Override     public boolean onCreateOptionsMenu(Menu menu) {          getMenuInflater().inflate(R.menu.main, menu);         return true;     } } 

6) Layout:

<?xml version="1.0" encoding="utf-8"?> <fragment xmlns:android="http://schemas.android.com/apk/res/android"           android:id="@+id/map"           android:layout_width="match_parent"           android:layout_height="match_parent"           android:name="com.google.android.gms.maps.MapFragment"/> 

Answer 1

Use Fragment activity

eg:

public class Maps extends FragmentActivity {     GoogleMap map;     double lat;     double lan;     boolean flag = false;      // private LocationManager lm;     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.mapptry);          map = ((SupportMapFragment) getSupportFragmentManager()                 .findFragmentById(R.id.map)).getMap();                  }   } 

Change ur map.xml to

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

EDIT

Got to do this also

import android.support.v4.app.FragmentActivity;

Before you do this Right click project->properties->buildpath->java build path -> libraries .. then click on add external jars

the go to

user\android-sdks\extras\android\support\v4

and select android-support-v4.jar

PS: Do all this provided your API key is correct . If you API key is wrong then also it shows only a white screen

Answer 2

try to add

GoogleMap googleMap =    ((MapFragment)getFragmentManager().findFragmentById(R.id.map)).getMap(); 

and replace your xml with

<?xml version="1.0" encoding="utf-8"?> <fragment xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/map" android:layout_width="match_parent" android:layout_height="match_parent" android:name="com.google.android.gms.maps.MapFragment" /> 

you have added the following code outside application tag instead put it inside the tag

<uses-feature android:glEsVersion="0x00020000" android:required="true" />  <permission     android:name="com.example.mapdemo.permission.MAPS_RECEIVE"     android:protectionLevel="signature" /> 

hope this might help someone who is facing the same problem