I got '23.3.0' support library version, can when attempting to do this:
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="@drawable/abc"
app:layout_collapseMode="pin"/>
The drawable is not appearing in the device running api 21. As a matter of fact, my app has min Api 21, and even in the android studio preview, only N Preview Api 23 will actually draw the background. I have never had any problems with this with normal ImageViews. The vector is this one:
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="414dp"
android:height="100dp"
android:viewportWidth="414"
android:viewportHeight="100">
<path
android:fillColor="#FFD50000"
android:pathData="M 0,0 414,0 414,65 0,100 0,0"/>
</vector>
Any idea why it is not appearing?
You definitely should update your support library:
Android Support Library 23.4.0 available now
This release of the Android Support Library fixes a number of bugs in Support v4, AppCompat, Design, and Vector Drawable Compat. See the revisions page (https://developer.android.com/tools/support-library/index.html) for a full list of closed issues.
https://plus.google.com/+AndroidDevelopers/posts/B7QhFkWZ6YX