DialogX/DialogX/src/main/res/layout/layout_dialogx_bottom_material_dark.xml

<?xml version="1.0" encoding="utf-8"?>
<com.kongzue.dialogx.util.views.DialogXBaseRelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/box_root"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/black40"
    android:orientation="vertical">

    <RelativeLayout
        android:id="@+id/box_bkg"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <com.kongzue.dialogx.util.views.MaxRelativeLayout
            android:id="@+id/bkg"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            android:background="@drawable/rect_dialogx_material_bottom_bkg_night"
            android:focusableInTouchMode="true">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:paddingTop="10dp"
                android:clickable="true"
                android:orientation="vertical">

                <ImageView
                    android:id="@+id/img_tab"
                    android:layout_width="30dp"
                    android:layout_height="4dp"
                    android:layout_gravity="center_horizontal"
                    android:layout_marginBottom="1dp"
                    android:src="@drawable/rect_dialogx_material_dialogtap_night" />

                <TextView
                    android:id="@+id/txt_dialog_title"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center_horizontal"
                    android:gravity="center_vertical"
                    android:paddingHorizontal="20dp"
                    android:paddingBottom="10dp"
                    android:text="Title"
                    android:textColor="@color/white"
                    android:textSize="21dp" />

                <ScrollView
                    android:id="@+id/scrollView"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:overScrollMode="never"
                    android:scrollbarSize="7dp"
                    android:scrollbars="vertical">

                    <LinearLayout
                        android:id="@+id/box_content"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:orientation="vertical">

                        <TextView
                            android:id="@+id/txt_dialog_tip"
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content"
                            android:layout_marginHorizontal="20dp"
                            android:paddingBottom="5dp"
                            android:text="This is content text."
                            android:textColor="@color/white60"
                            android:textSize="16dp" />

                        <RelativeLayout
                            android:id="@+id/box_custom"
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content"/>

                    </LinearLayout>

                </ScrollView>

            </LinearLayout>

        </com.kongzue.dialogx.util.views.MaxRelativeLayout>

    </RelativeLayout>

</com.kongzue.dialogx.util.views.DialogXBaseRelativeLayout>