<?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">

    <com.vhall.business.widget.PPTView
        android:id="@+id/iv_doc"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:visibility="gone" />

    <com.vhall.business.widget.WhiteBoardView
        android:id="@+id/board"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:visibility="gone" />

    <FrameLayout
        android:id="@+id/fl_h5_doc"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:visibility="gone" />

</RelativeLayout>