knuhConsent/app/src/main/res/layout/activity_custom_sign_pad.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginVertical="200dp"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:background="@drawable/department_layer">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_centerInParent="true"
        android:background="@drawable/department_layer"
        android:orientation="vertical">
        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="2dp"
            android:background="@color/commonColor">
            <TextView
                android:id="@+id/tvTitle"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_margin="12dp"
                android:text="@string/createSign"
                android:textColor="@color/white"
                android:textSize="20sp"
                android:textStyle="bold" />
        </RelativeLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical"
            android:layout_marginTop="12dp"
            android:layout_marginLeft="14dp"
            android:layout_marginRight="14dp"
            android:weightSum="1">
            <LinearLayout
                android:id="@+id/signPadLayout"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:background="@drawable/sign_edge"
                android:layout_weight="0.25"
                android:layout_marginBottom="14dp"
                android:weightSum="4"
                android:orientation="vertical">
                <com.github.gcacace.signaturepad.views.SignaturePad
                    android:id="@+id/signPad"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_margin="12dp"
                    app:penColor="@color/black" />
            </LinearLayout>
            <LinearLayout
                android:id="@+id/btnLayout"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="horizontal"
                android:layout_weight="0.75"
                android:layout_marginBottom="2dp"
                android:gravity="center"
                android:background="@xml/border_top">
                <Button
                    android:id="@+id/btnConfirm"
                    style="?android:attr/borderlessButtonStyle"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_weight="1"
                    android:layout_marginTop="14dp"
                    android:layout_marginBottom="12dp"
                    android:layout_marginLeft="48dp"
                    android:layout_marginRight="10dp"
                    android:background="@drawable/shape2"
                    android:textColor="@color/white"
                    android:textSize="16sp"
                    android:text="@string/confirm"/>

                <Button
                    android:id="@+id/btnInit"
                    style="?android:attr/borderlessButtonStyle"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_weight="1"
                    android:layout_marginTop="14dp"
                    android:layout_marginBottom="12dp"
                    android:layout_marginLeft="10dp"
                    android:layout_marginRight="48dp"
                    android:text="@string/initialize"
                    android:textColor="@color/white"
                    android:textSize="16sp"
                    android:background="@drawable/shape2" />

            </LinearLayout>
        </LinearLayout>
    </LinearLayout>
</RelativeLayout>