app-startup-automatic-initialization-example.xml

<manifest>
    <application>
        <provider
            android:name="androidx.startup.InitializationProvider"
            android:authorities="${applicationId}.androidx-startup"
            android:exported="false"
            tools:node="merge">

            <!-- Automatically runs FaceDetectorInitializer and CameraInitializer at app startup -->
            <meta-data
                android:name="com.example.FaceDetectorInitializer"
                android:value="androidx.startup" />
        </provider>
    </application>
</manifest>