activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#0000ff"
    tools:context=".MainActivity">

    <!-- The primary full-screen view. This can be replaced with whatever view
         is needed to present your content, e.g. VideoView, SurfaceView,
         TextureView, etc. -->

    <TextView
        android:id="@+id/L1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_marginTop="40dp"
        android:gravity="center"
        android:keepScreenOn="true"
        android:text="@string/www_avtprom_com"
        android:textColor="#ffffff"
        android:textSize="20sp"
        android:textStyle="normal" />

    <TextView
        android:id="@+id/L2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:gravity="center"
        android:keepScreenOn="true"
        android:text="@string/xenops"
        android:textColor="#ffffff"
        android:textSize="50sp"
        android:textStyle="bold" />

    <TextView
        android:id="@+id/FS1"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <WebView
        android:id="@+id/WV1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:visibility="invisible" />

    <!-- This FrameLayout insets its children based on system windows using
         android:fitsSystemWindows. -->

</FrameLayout>