Activity not changing from portrait mode to landscape mode in android
<p>I am trying to change orientation from portrait to landscape for an Android activity. But it is not changing to landscape.</p>

<p>I mention the activity in the manifest file as follows:</p>

<pre><code>&lt;activity
    android:name=".OpenFileActivity"
    android:label="@string/app_name"
    android:configChanges="orientation|keyboardHidden"
    android:exported="false"&gt;
</code></pre>

<p>But I am unsuccessful. Can any one tell me why that is?</p>
