Infinity-For-Lemmy/app/src/main/res/layout/activity_wiki.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/coordinator_layout_comment_wiki_activity"
    tools:context=".activities.WikiActivity">

    <com.google.android.material.appbar.AppBarLayout
        android:id="@+id/appbar_layout_comment_wiki_activity"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

        <com.google.android.material.appbar.CollapsingToolbarLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layout_scrollFlags="scroll|enterAlways"
            app:titleEnabled="false"
            app:toolbarId="@+id/toolbar_comment_wiki_activity">

            <androidx.appcompat.widget.Toolbar
                android:id="@+id/toolbar_comment_wiki_activity"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:minHeight="?attr/actionBarSize"
                app:popupTheme="@style/AppTheme.PopupOverlay"
                app:navigationIcon="?attr/homeAsUpIndicator" />

        </com.google.android.material.appbar.CollapsingToolbarLayout>

    </com.google.android.material.appbar.AppBarLayout>

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/content_markdown_view_comment_wiki_activity"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:paddingStart="16dp"
        android:paddingEnd="16dp"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />

    <LinearLayout
        android:id="@+id/fetch_wiki_linear_layout_wiki_activity"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="48dp"
        android:layout_marginBottom="48dp"
        android:gravity="center"
        android:orientation="vertical"
        android:visibility="gone"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" >

        <ImageView
            android:id="@+id/fetch_wiki_image_view_wiki_activity"
            android:layout_width="150dp"
            android:layout_height="wrap_content" />

        <TextView
            android:id="@+id/fetch_wiki_text_view_wiki_activity"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="16dp"
            android:gravity="center"
            android:textSize="?attr/font_default"
            android:fontFamily="?attr/font_family" />

    </LinearLayout>

</androidx.coordinatorlayout.widget.CoordinatorLayout>