Getsupportfragmentmanager() Is Not Accessible

I am creating a basic example and getting this 2 Errors. import androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; import android.net.Uri; import android.view.Gr

Solution 1:

<fragment
        android:id="@+id/face_fragment"
        android:name="com.google.ar.sceneform.ux.ArFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

Have you mentioned the android:name tag?