Can we defined nested id as `@+id/index/btn1` in android?
<p>We can define ids like this:</p>

<pre><code>&lt;TextView android:id="@+id/btn1" /&gt;
</code></pre>

<p>But there are many activities and many components, the ids may be duplicated with others easily.</p>

<p>Is it able to define nested ides, like:</p>

<pre><code>&lt;TextView android:id="@+id/index/btn1" /&gt;
</code></pre>
