Secondary activity in the manifest

Manifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.android.multiplescreens">
    <application
        <!-- See about the taskAffinity attribute at http://bit.ly/34RKvzC -->
        <activity
            android:name=".SecondActivity"
            android:launchMode="singleTask"
            android:taskAffinity="cover.container" />
    </application>
</manifest>