You need to make a few changes to your app's manifest so that Android Auto can discover and interact with your app's media browser service.
Declare media support for Android Auto
Use the following manifest entry to declare that your phone app supports Android Auto:
<application>
...
<meta-data android:name="com.google.android.gms.car.application"
android:resource="@xml/automotive_app_desc"/>
...
</application>
This manifest entry refers to an XML file that declares what automotive
capabilities your app supports. To indicate that you have a media app, add an
XML file named automotive_app_desc.xml
to the res/xml/
directory in your
project. This file should include the following content:
<automotiveApp>
<uses name="media"/>
</automotiveApp>
Report an Android Auto Media issue
If you run into an issue while developing your media app for Android Auto, you can report it using the Google Issue Tracker. Be sure to fill out all the requested information in the issue template.
Before filing a new issue, please check whether it is already reported in the issues list. You can subscribe to and vote for issues by clicking the star for an issue in the tracker. For more information, see Subscribing to an Issue.