Problème avec Google Maps

salut ,je veux afficher la carte mais j'ai rien reçu
voici mon code
MainActivity.java

Code:

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package com.example.androidmaphmida;
 
import android.os.Bundle;
import android.widget.Toast;
import android.app.Activity;
 
import com.example.androidmaphmida.R;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
 
public class MainActivity extends Activity {
 
    // Google Map
     GoogleMap map;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
        map = ((MapFragment)getFragmentManager().findFragmentById(R.id.map)).getMap();
 
		//geolocalisation
		map.setMyLocationEnabled(true);
 
 
 
    }
 
    @Override
    protected void onResume() {
        super.onResume();
 
    }
 
}

activity_main.xml

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

Manifest.xml

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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.androidmaphmida"
    android:versionCode="1"
    android:versionName="1.0" >
 
    <permission
        android:name="com.example.androidmaphmida.permission.MAPS_RECEIVE"
        android:protectionLevel="signature" />
 
    <uses-permission android:name="com.example.androidmaphmida.permission.MAPS_RECEIVE" />
 
    <uses-sdk
        android:minSdkVersion="11"
        android:targetSdkVersion="21" />
 
    <uses-feature
        android:glEsVersion="0x00020000"
        android:required="true" />
 
    <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="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
 
 
    <!-- Required OpenGL ES 2.0. for Maps V2 -->
    <uses-feature
        android:glEsVersion="0x00020000"
        android:required="true" />
 
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name">
        <activity
            android:name="com.example.androidmaphmida.MainActivity"
            android:label="@string/app_name"
            android:theme="@style/AppBaseTheme">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
 
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
 
    </activity>
 
        <!-- Goolge API Key -->
        <meta-data
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="AIzaSyBg-SzhfkXjGUDK037BbmsG4Hv3yrY6c2M" />
         <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value="com.example.androidmaphmida.MainActivity" />
 
     <meta-data
    android:name="com.google.android.gms.version"
    android:value="@integer/google_play_services_version" />
    </application>
 
</manifest>