Radio Button does not toggle its state
<p>I add a RadioButton in my layout. </p>

<p>It is unchecked to begin with. And when I click on it , it becomes checked (as shown in emulator). But when when i click on it again, it does not become unchecked again?</p>

<pre><code>&lt;RadioButton android:checked="false"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:id="@+id/option1"/&gt;
</code></pre>
