fedilab-Android-App/app/src/main/res/layout/fragment_slide_media.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:id="@+id/main_container_media">


    <!-- Main Loader -->
    <RelativeLayout
        android:id="@+id/loader"
        android:layout_alignParentTop="true"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center">

        <ProgressBar
            style="@style/Base.Widget.AppCompat.ProgressBar.Horizontal"
            android:indeterminate="false"
            android:id="@+id/pbar_inf"
            android:layout_width="match_parent"
            android:max="100"
            android:progress="0"
            android:layout_height="wrap_content" />

        <TextView
            android:id="@+id/loader_progress"
            android:layout_width="match_parent"
            android:textColor="@color/dark_text"
            android:gravity="center"
            android:textSize="12sp"
            android:layout_gravity="center"
            android:layout_height="wrap_content" />
    </RelativeLayout>

    <FrameLayout
        android:layout_centerInParent="true"
        android:id="@+id/media_webview_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

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

    <FrameLayout
        android:layout_centerInParent="true"
        android:id="@+id/media_picture_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <!-- Description is set dynamically -->
        <com.github.chrisbanes.photoview.PhotoView
            android:visibility="gone"
            android:id="@+id/media_picture"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:adjustViewBounds="true" />
    </FrameLayout>

    <RelativeLayout
        android:id="@+id/content_audio"
        android:visibility="gone"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:gravity="center">

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentTop="true"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="50dp"
            android:orientation="vertical">

            <TextView
                android:id="@+id/status"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginBottom="-10dp"
                android:textSize="20sp"
                android:textColor="@android:color/white"
                android:fontFamily="sans-serif-light"
                android:visibility="invisible" />

            <TextView
                android:id="@+id/timer"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textSize="60sp"
                android:textColor="@android:color/white"
                android:fontFamily="sans-serif-thin"
                android:text="00:00:00"
                tools:ignore="HardcodedText" />

        </LinearLayout>

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="@dimen/aar_footer_height"
            android:layout_alignParentBottom="true">

            <ImageButton
                android:id="@+id/play"
                android:layout_width="80dp"
                android:layout_height="80dp"
                android:layout_centerVertical="true"
                android:layout_centerInParent="true"
                android:layout_marginTop="50dp"
                android:padding="10dp"
                android:scaleType="fitCenter"
                android:src="@drawable/aar_ic_play"
                android:onClick="togglePlaying"
                style="@style/Widget.AppCompat.Button.Borderless"
                android:contentDescription="@string/play_video" />
        </RelativeLayout>

    </RelativeLayout>

    <com.google.android.exoplayer2.ui.SimpleExoPlayerView
        android:visibility="gone"
        android:id="@+id/media_video"
        android:layout_centerInParent="true"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />



    <ImageView
        android:id="@+id/media_prev"
        android:layout_width="30dp"
        android:layout_height="50dp"
        android:layout_alignParentStart="true"
        android:layout_centerVertical="true"
        android:layout_marginStart="5dp"
        android:layout_marginLeft="5dp"
        android:layout_marginTop="5dp"
        android:layout_marginEnd="5dp"
        android:layout_marginRight="5dp"
        android:layout_marginBottom="5dp"
        android:background="@color/transparent_grey"
        android:tint="@color/white"
        android:contentDescription="@string/previous"
        android:src="@drawable/ic_first_page"
        android:visibility="gone" />

    <ImageView
        android:id="@+id/media_next"
        android:layout_width="30dp"
        android:layout_height="50dp"
        android:layout_alignParentEnd="true"
        android:layout_centerVertical="true"
        android:layout_marginStart="5dp"
        android:layout_marginLeft="5dp"
        android:layout_marginTop="5dp"
        android:layout_marginEnd="5dp"
        android:layout_marginRight="5dp"
        android:layout_marginBottom="5dp"
        android:background="@color/transparent_grey"
        android:contentDescription="@string/next"
        android:src="@drawable/ic_last_page"
        android:visibility="gone" />


    <TextView
        android:visibility="gone"
        android:background="@drawable/media_message_border"
        android:id="@+id/message_ready"
        android:textColor="@color/dark_text"
        android:text="@string/media_ready"
        android:gravity="center"
        android:textSize="14sp"

        android:layout_alignBottom="@+id/media_picture_container"
        android:layout_marginBottom="40dp"
        android:layout_width="match_parent"
        android:layout_height="40dp" />
</RelativeLayout>