error on manifest file in the project
<p>I had error on the manifest file when I tried to solve the GCM issue :</p>

<blockquote>
  <p>error</p>
  
  <p>error: Error: No resource found that matches the given name (at 'label' with value '@string/title_activity_main').</p>
</blockquote>

<p>The error appears here:</p>

<pre><code>android:label="@string/title_activity_main" &gt;
</code></pre>

<p><strong>Manifest:</strong></p>

<pre><code>&lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.elarabygroup"
    android:versionCode="1"
    android:versionName="1.0" &gt;

    &lt;uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" /&gt;

    &lt;permission
        android:name="com.example.elarabygroup.permission.C2D_MESSAGE"
        android:protectionLevel="signature" /&gt;

    &lt;uses-permission android:name="com.example.elarabygroup.permission.C2D_MESSAGE" /&gt;
    &lt;uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /&gt;

    &lt;!-- App receives GCM messages. --&gt;
    &lt;uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" /&gt;
    &lt;!-- GCM connects to Google Services. --&gt;
    &lt;uses-permission android:name="android.permission.INTERNET" /&gt;
    &lt;!-- GCM requires a Google account. --&gt;
    &lt;uses-permission android:name="android.permission.GET_ACCOUNTS" /&gt;
    &lt;!-- Keeps the processor from sleeping when a message is received. --&gt;
    &lt;uses-permission android:name="android.permission.WAKE_LOCK" /&gt;

    &lt;application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" &gt;
        &lt;service
            android:name="com.example.elarabygroup"
            android:enabled="true" /&gt;

        &lt;activity
            android:name=".MainActivity"
            android:label="@string/title_activity_main" &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;receiver
            android:name="com.google.android.gcm.GCMBroadcastReceiver"
            android:permission="com.google.android.c2dm.permission.SEND" &gt;
            &lt;intent-filter&gt;
                &lt;action android:name="com.google.android.c2dm.intent.RECEIVE" /&gt;
                &lt;action android:name="com.google.android.c2dm.intent.REGISTRATION" /&gt;

                &lt;category android:name="com.example.elarabygroup.gcm2" /&gt;
            &lt;/intent-filter&gt;
        &lt;/receiver&gt;
    &lt;/application&gt;

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