How to implement Android custom shadow view?

I was using one dependency that was working fine, I have seen that it is deprecated, so I am not going to use it more, this was the dependency:dependency I was using

If you see, the About of this depencency, says the following:

Deprecated because of the performance not fine. Android custom shadow view, can replace your CardView

I am trying to replace what I was using from that dependency for the Android custom shadow view as the dependency About says, but I don´t know how could I do it.

This is what I was using:

<com.loopeer.shadow.ShadowView
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginStart="14dp"
                android:layout_marginEnd="14dp"
                android:layout_weight="1"
                android:elevation="@dimen/shel"
                app:cornerRadiusTL="@dimen/hol"
                app:cornerRadiusTR="@dimen/car"
                app:shadowMarginLeft="@dimen/shadow"
                app:shadowMarginRight="@dimen/margn"
                app:shadowRadius="@dimen/radius">


            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="vertical"
                android:visibility="visible">

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:orientation="vertical">

                 
                    <TextView
                        android:id="@+id/sign_stp"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginTop="3dp"
                        android:padding="6dp"
                        android:text="@string/sign"
                        android:textAppearance="@style/Base.TextAppearance.AppCompat.Medium"
                        android:textColor="@color/red" />

                </LinearLayout>
            </LinearLayout>
            </com.loopeer.shadow.ShadowView>

Also I had made the following function to show card view:

public void showCardView() {

        Animation.setAnimationListener(new Animation.AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {

            }

            @Override
            public void onAnimationEnd(Animation animation) {
                LinearLayout.setVisibility(View.VISIBLE);
            }

            @Override
            public void onAnimationRepeat(Animation animation) {

            }
        });
        LinearLayout.startAnimation(Animation);

    }

In the main.activity.java the above function is run:

showCardView();