error: cannot find symbol variable abc_ic_ab_back_mtrl_am_alpha
<p>I added a Fragment to my Android Studio project using <code>New &gt; Fragment &gt; Fragment (Blank)</code>. As a result when I try to run, the project won't compile because it cannot resolve <code>R.drawable.abc_ic_ab_back_mtrl_am_alpha</code> in </p>

<pre><code>toolbar.setNavigationIcon(R.drawable.abc_ic_ab_back_mtrl_am_alpha);
</code></pre>

<p>Any ideas how to solve this?</p>

<p>It looks like I also lost access to <code>android:buttonTint</code></p>