Cannot Resolve Symbol when importing vector asset in Android Studio
<p>I am using AS 1.5.1</p>

<p>So I tried to import a vector asset by following this:</p>

<p><a href="http://developer.android.com/tools/help/vector-asset-studio.html" rel="nofollow noreferrer">http://developer.android.com/tools/help/vector-asset-studio.html</a></p>

<p>I tried to use my drawable like this:</p>

<pre><code>android:src="@android:drawable/ic_av_timer_24dp.xml"
</code></pre>

<p>However, it was highlighted red and telling me that cannot resolve symbol.</p>

<p>Why is that so?</p>

<p>This is my whole layout file:</p>

<pre><code>    &lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context="org.isg.shinobi.isg.MainActivity"
    android:id="@+id/coordinator"&gt;

    &lt;android.support.design.widget.AppBarLayout
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:theme="@style/AppTheme.AppBarOverlay"&gt;

        &lt;android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/AppTheme.PopupOverlay" /&gt;



    &lt;/android.support.design.widget.AppBarLayout&gt;

    &lt;FrameLayout
        app:layout_behavior="@string/appbar_scrolling_view_behavior"
        android:id="@+id/frame"
        android:layout_width="match_parent"
        android:layout_height="match_parent"&gt;

    &lt;/FrameLayout&gt;


    &lt;android.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_margin="@dimen/fab_margin"
        android:src="@android:drawable/ic_av_timer_24dp.xml" /&gt;

&lt;/android.support.design.widget.CoordinatorLayout&gt;
</code></pre>

<p>This is my drawable structure.
<a href="https://i.stack.imgur.com/cootE.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/cootE.jpg" alt="enter image description here"></a></p>

<p>thanks!</p>