Не вызывается onStartNestedScroll

В чем проблема?

public class AvatarBihavior extends CoordinatorLayout.Behavior<ImageView> {

public AvatarBihavior() {
}


public AvatarBihavior(Context context, AttributeSet attrs) {

}


@Override
public boolean onDependentViewChanged(CoordinatorLayout parent, ImageView child, View dependency) {
    maybeInitProperties(child, dependency);
    Log.d("tagfffdf", "dsdvvd");

    return true;
}

private void maybeInitProperties(ImageView child, View dependency) {
}

@Override
public boolean onStartNestedScroll(@NonNull CoordinatorLayout coordinatorLayout, @NonNull ImageView child, @NonNull View directTargetChild, @NonNull View target, int axes, int type) {
    Log.d("fdfvdfv", "dvdfvdfv");
    return true;
}

}

<androidx.coordinatorlayout.widget.CoordinatorLayout android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">

    <androidx.core.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">
        <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical"
            app:layout_behavior=".AvatarBihavior">

<de.hdodenhof.circleimageview.CircleImageView
    android:id="@+id/hhhh"
    android:layout_width="100dp"
    android:layout_height="100dp"
    android:layout_marginTop="16dp"
    app:layout_behavior=".AvatarBihavior"
    app:civ_border_width="1dp"
    app:civ_border_color="@color/grey"
    android:scaleType="centerCrop"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="0.051"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    app:srcCompat="@drawable/b1" />

<ImageView
    android:id="@+id/imageView4"
    android:layout_width="35dp"
    android:layout_height="35dp"
    android:src="@drawable/baseline_add_circle_24"
    app:layout_behavior=".AvatarBihavior"
    app:layout_constraintBottom_toBottomOf="@+id/hhhh"
    app:layout_constraintEnd_toEndOf="@+id/hhhh"
    app:layout_constraintHorizontal_bias="1.0"
    app:layout_constraintStart_toStartOf="@+id/hhhh"
    app:layout_constraintTop_toTopOf="@+id/hhhh"
    app:layout_constraintVertical_bias="1.0"
    android:background="@drawable/backgradd"/>

<LinearLayout
    android:id="@+id/linearLayout3"
    android:layout_width="285dp"
    android:layout_height="143dp"
    android:layout_marginStart="124dp"
    android:layout_marginTop="4dp"
    android:focusable="true"
    android:focusableInTouchMode="true"
    android:orientation="vertical"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent">

    <com.example.lorysport.CustomEditText
        android:id="@+id/pname"
        android:layout_width="201dp"
        android:layout_height="42dp"
        android:layout_marginStart="16dp"
        android:layout_marginTop="25dp"
        android:background="@android:color/transparent"
        android:cursorVisible="false"
        android:ems="20"
        android:inputType="textPersonName|textCapWords"
        android:maxLines="1"
        android:paddingStart="5dp"
        android:textColor="@color/dark"
        android:textSize="26sp" />

    <com.example.lorysport.CustomEditText
        android:id="@+id/status"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="20dp"
        android:background="@android:color/transparent"
        android:cursorVisible="false"
        android:maxLines="1"
        android:paddingStart="5dp"
        android:textColor="@color/dark"
        android:textSize="15sp"
        app:layout_constraintStart_toEndOf="@+id/hhhh"
        app:layout_constraintTop_toBottomOf="@+id/num" />

    <TextView
        android:id="@+id/num"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

<androidx.recyclerview.widget.RecyclerView
    android:id="@+id/photos"
    android:layout_width="match_parent"
    android:layout_height="115dp"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/linearLayout3" />

<Button
    android:id="@+id/addphoto"
    android:layout_width="200dp"
    android:layout_height="940dp"
    android:layout_marginStart="80dp"
    android:layout_marginTop="8dp"
    android:layout_marginEnd="80dp"
    android:background="@drawable/tab_rounded_pressed"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/photos"
    android:text="@string/addphoto"
    android:textColor="@color/white"
    />        </androidx.constraintlayout.widget.ConstraintLayout>

</androidx.core.widget.NestedScrollView> </androidx.coordinatorlayout.widget.CoordinatorLayout>

Уже куда только не пытался вешать behavior ничего не колбечит. Заранее спасибо за помощь!