Tusky-App-Android/app/src/main/res/layout/activity_view_video.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/view_video_background"
    android:id="@+id/view_video_container"
    tools:context=".ViewVideoActivity">
    <VideoView
        android:id="@+id/videoPlayer"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="center" />
    <ProgressBar
        android:id="@+id/videoProgressBar"
        android:layout_gravity="center"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:theme="@style/AppTheme.Account.AppBarLayout"
        app:popupTheme="?attr/toolbar_popup_theme"
        android:background="@color/toolbar_view_media" />
</android.support.design.widget.CoordinatorLayout>