title: Unbound Prefix in layout XML in com.google.android.gms.maps.MapView when try to add "map:...." attribute
body: <p>I have a MapView (com.google.android.gms.maps.MapView, NOT using support) inside a LLayout. 
  The MapView works perfectly fine, meaning I can see the map, I can zoom in and out. 
  BUT
  when I try to add any of map:... attributes the compiler gives the error: unbound prefix. </p>
  
  <p>I have google_play_services lib added to my project. 
  My manifest has every necessary item added according to developers guide. </p>
  
  <p>What am I missing? I Googled a lot but nothing worked for me.</p>
  
  <p>Here is my fragment_map.XML</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
  android:layout_height="match_parent" android:layout_width="match_parent"
  android:orientation="vertical"&gt;
  
          &lt;com.google.android.gms.maps.MapView
          android:id="@+id/map"
          android:layout_width="match_parent"
          android:layout_height="fill_parent"
          map:cameraTargetLat="-33.123456"
          /&gt;
  
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>Here my manifest:
       
      </p>
  
  <pre><code>&lt;uses-sdk
      android:minSdkVersion="11"
      android:targetSdkVersion="21" /&gt;
  
  &lt;permission 
      android:name="com.***.***.MAPS_RECEIVE"
      android:protectionLevel="signature"&gt;
  &lt;/permission&gt;
  &lt;uses-permission android:name="com.***.***.MAPS_RECEIVE"/&gt;
  &lt;uses-permission android:name="android.permission.CALL_PHONE"/&gt;
  &lt;uses-permission android:name="android.permission.INTERNET" /&gt;
  &lt;uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /&gt;
  &lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/&gt;
  &lt;uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/&gt;
  
  &lt;uses-feature 
      android:glEsVersion="0x00020000"
      android:required="true"/&gt;
  
  
  &lt;application
      android:allowBackup="true"
      android:icon="@drawable/ic_launcher"
      android:label="@string/app_name"
      android:theme="@style/AppTheme"&gt;
      &lt;meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" /&gt;
      &lt;activity
          android:name="com.***.***.MainActivity"
          android:label="@string/app_name" &gt;
          &lt;intent-filter&gt;
              &lt;action android:name="android.intent.action.MAIN" /&gt;
              &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
          &lt;/intent-filter&gt;
      &lt;/activity&gt;
      &lt;activity
          android:name="com.***.***.ActivitySearchPropertyListing"
          android:label="@string/title_activity_activity_search_property_listing" &gt;
      &lt;/activity&gt;
      &lt;meta-data android:name="com.google.android.maps.v2.API_KEY" android:value="AIzaSyCbMZNV8ylf0J3m16l6tUHJJLHP7EhTmRI"/&gt;
  
  &lt;/application&gt;
  
  &lt;/manifest&gt;
  </code></pre>
  
  <p>My project Libraries and build path:</p>
  
  <p><img src="https://i.stack.imgur.com/luqX8.png" alt="enter image description here"></p>