Retro_HA/app/src/main/res/layout/activity_settings.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="@color/ha_white"
    android:padding="16dp">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/btn_settings"
        android:textStyle="bold"
        android:typeface="monospace"
        android:textSize="18sp"
        android:textColor="@color/ha_black"
        android:layout_marginBottom="16dp" />

    <View
        android:layout_width="match_parent"
        android:layout_height="2dp"
        android:background="@color/ha_black"
        android:layout_marginBottom="16dp" />

    <!-- ENTITY SELECTION BUTTON -->
    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <View
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:background="@color/ha_black"
            android:layout_marginLeft="4dp"
            android:layout_marginTop="4dp" />
        <Button
            android:id="@+id/btnEntitySelection"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:text="@string/btn_entity_selection"
            android:background="@color/ha_yellow"
            android:textColor="@color/ha_black"
            android:typeface="monospace"
            android:textStyle="bold" />
    </FrameLayout>

    <!-- CONNECTION BUTTON -->
    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp">
        <View
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:background="@color/ha_black"
            android:layout_marginLeft="4dp"
            android:layout_marginTop="4dp" />
        <Button
            android:id="@+id/btnGoToConnection"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:text="@string/title_connection"
            android:background="@color/ha_blue"
            android:textColor="@color/ha_white"
            android:typeface="monospace"
            android:textStyle="bold" />
    </FrameLayout>

    <!-- INSTRUCTIONS BUTTON -->
    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp">
        <View
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:background="@color/ha_black"
            android:layout_marginLeft="4dp"
            android:layout_marginTop="4dp" />
        <Button
            android:id="@+id/btnInstructions"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:text="@string/btn_instructions"
            android:background="@color/ha_gray_light"
            android:textColor="@color/ha_black"
            android:typeface="monospace"
            android:textStyle="bold" />
    </FrameLayout>

    <!-- CHANGE LANGUAGE BUTTON -->
    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp">
        <View
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:background="@color/ha_black"
            android:layout_marginLeft="4dp"
            android:layout_marginTop="4dp" />
        <Button
            android:id="@+id/btnChangeLang"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:text="@string/btn_change_lang"
            android:background="@color/ha_orange"
            android:textColor="@color/ha_black"
            android:typeface="monospace"
            android:textStyle="bold" />
    </FrameLayout>

    <!-- DELETE ALL BUTTON -->
    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp">
        <View
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:background="@color/ha_black"
            android:layout_marginLeft="4dp"
            android:layout_marginTop="4dp" />
        <Button
            android:id="@+id/btnDeleteAll"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:text="@string/btn_delete_all"
            android:background="@color/ha_red"
            android:textColor="@color/ha_white"
            android:typeface="monospace"
            android:textStyle="bold" />
    </FrameLayout>

</LinearLayout>