sheishuoAPP/app/res/layout/avchat_activity.xml

<?xml version="1.0" encoding="utf-8"?>

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/parentLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <include
        android:id="@+id/avchat_audio_layout"
        layout="@layout/avchat_audio_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:visibility="gone" />

    <include
        android:id="@+id/avchat_surface_layout"
        layout="@layout/avchat_surface_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:visibility="visible" />

    <include
        android:id="@+id/avchat_video_layout"
        layout="@layout/avchat_video_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:visibility="gone" />

</FrameLayout>