installLocation identifier not found in eclipse Android package
<p>when I tried to add</p>

<pre><code>android:installLocation="auto" 
</code></pre>

<p>in my AndroidManifest.xml file I found the following error in eclipse </p>

<pre><code>error: No resource identifier found for attribute "installLocation" in package "android"
</code></pre>

<p>how to overcome this problem ?</p>

<p>edited :</p>

<p>My Manifest file is :</p>

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;manifest
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:installLocation="auto"
    android:versionCode="1"
    android:versionName="1.0" 
    package="com.xxxx.yyyy"&gt;

        &lt;uses-permission android:name="android.permission.INTERNET" /&gt;
        &lt;uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/&gt;

    &lt;application
        android:label="@string/app_name" android:icon="@drawable/icon"&gt;

    &lt;activity
        android:screenOrientation="portrait"
        android:name=".StarterActivity"
        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:screenOrientation="portrait"
        android:name="GamePlayActivity"&gt;&lt;/activity&gt;

                &lt;activity
    android:screenOrientation="portrait"
        android:name="LoginActivity"&gt;&lt;/activity&gt;

                &lt;activity
    android:screenOrientation="portrait"
        android:name="SignupActivity"&gt;&lt;/activity&gt;

    &lt;activity
    android:screenOrientation="portrait"
        android:name="MainMenuActivity"&gt;&lt;/activity&gt;
    &lt;activity
    android:screenOrientation="portrait"
        android:name="InfoActivity"&gt;&lt;/activity&gt;

    &lt;activity
    android:screenOrientation="portrait"
        android:name="ViewScoreActivity"&gt;&lt;/activity&gt;    



    &lt;activity 
    android:name="com.google.ads.AdActivity"
          android:configChanges="keyboard|keyboardHidden|orientation"&gt;&lt;/activity&gt;

  &lt;/application&gt;
    &lt;uses-sdk
        android:minSdkVersion="7" 
    /&gt;


&lt;/manifest&gt; 
</code></pre>

<p>error is showing in line 
    android:installLocation="auto" </p>

<p>Thanks</p>
