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

<androidx.constraintlayout.widget.ConstraintLayout 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:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="?attr/colorPrimaryDark"
    tools:context=".SettingsActivity">

    <TextView
        android:id="@+id/heading"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/settings_title"
        android:textColor="#cccccc"
        android:textSize="36sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.100000024" />

    <TextView
        android:id="@+id/sub_head_1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/settings_sub_title1"
        android:textColor="#999"
        android:textSize="18sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias=".1"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.189" />

    <TableLayout
        android:id="@+id/actionschooser"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center_horizontal|center_vertical"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="@id/sub_head_1"
        app:layout_constraintVertical_bias="0.120000005">

        <TableRow
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <TextView
                android:id="@+id/text_up"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:paddingLeft="10sp"
                android:paddingRight="10sp"
                android:text="@string/settings_choose_up"
                android:textColor="#ccc"
                android:textSize="24sp" />

            <Button
                android:id="@+id/btn_choose_up"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:alpha=".8"
                android:onClick="chooseUpApp"
                android:text="@string/settings_choose_btn" />
        </TableRow>

        <TableRow
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <TextView
                android:id="@+id/text_down"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:paddingLeft="10sp"
                android:paddingRight="10sp"
                android:text="@string/settings_choose_down"
                android:textColor="#ccc"
                android:textSize="24sp" />

            <Button
                android:id="@+id/btn_choose_down"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:alpha=".8"
                android:onClick="chooseDownApp"
                android:text="@string/settings_choose_btn" />

        </TableRow>

        <TableRow
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <TextView
                android:id="@+id/text_left"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:paddingLeft="10sp"
                android:paddingRight="10sp"
                android:text="@string/settings_choose_left"
                android:textColor="#ccc"
                android:textSize="24sp" />

            <Button
                android:id="@+id/btn_choose_left"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:alpha=".8"
                android:onClick="chooseLeftApp"
                android:text="@string/settings_choose_btn" />
        </TableRow>

        <TableRow
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <TextView
                android:id="@+id/text_right"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:paddingLeft="10sp"
                android:paddingRight="10sp"
                android:text="@string/settings_choose_right"
                android:textColor="#ccc"
                android:textSize="24sp" />

            <Button
                android:id="@+id/btn_choose_right"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:alpha=".8"
                android:onClick="chooseRightApp"
                android:text="@string/settings_choose_btn" />

        </TableRow>

        <TableRow
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <TextView
                android:id="@+id/text_vol_up"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:paddingLeft="10sp"
                android:paddingRight="10sp"
                android:text="@string/settings_choose_vol_up"
                android:textColor="#ccc"
                android:textSize="24sp" />

            <Button
                android:id="@+id/btn_choose_volume_up"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:alpha=".8"
                android:onClick="chooseVolumeUpApp"
                android:text="@string/settings_choose_btn" />
        </TableRow>

        <TableRow
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <TextView
                android:id="@+id/text_vol_down"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:paddingLeft="10sp"
                android:paddingRight="10sp"
                android:text="@string/settings_choose_vol_down"
                android:textColor="#ccc"
                android:textSize="24sp" />

            <Button
                android:id="@+id/btn_choose_volume_down"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:alpha=".8"
                android:onClick="chooseVolumeDownApp"
                android:text="@string/settings_choose_btn" />

        </TableRow>

    </TableLayout>

    <TextView
        android:id="@+id/sub_head_2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/settings_sub_title2"
        android:textColor="#999"
        android:textSize="18sp"
        app:layout_constraintBottom_toBottomOf="@id/buttons"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.1"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="@id/actionschooser"
        app:layout_constraintVertical_bias="0.65999997" />

    <TableLayout
        android:id="@+id/buttons"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/actionschooser"
        app:layout_constraintVertical_bias="0.19999999">

        <TableRow
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:gravity="center">

            <Button
                style="@style/Widget.AppCompat.Button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:alpha=".3"
                android:onClick="setLauncher"
                android:text="@string/settings_select_launcher" />

            <Button
                style="@style/Widget.AppCompat.Button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:alpha=".3"
                android:onClick="resetSettingsClick"
                android:text="@string/settings_reset" />

        </TableRow>

        <TableRow
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:gravity="center">

            <Button
                style="@style/Widget.AppCompat.Button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:alpha=".3"
                android:onClick="chooseLaunchApp"
                android:text="@string/settings_launch" />

            <Button
                style="@style/Widget.AppCompat.Button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:alpha=".3"
                android:onClick="chooseUninstallApp"
                android:text="@string/settings_uninstall" />

        </TableRow>

        <TableRow
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:gravity="center">

            <Button
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:onClick="backHome"
                android:text="@string/settings_home" />
        </TableRow>

    </TableLayout>

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.95">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/settings_footer_by"
            android:textColor="#999"
            android:textSize="18sp" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="openFinnWebsite"
            android:text=" Finn M Glas"
            android:textColor="?attr/colorAccent"
            android:textSize="18sp"
            tools:ignore="HardcodedText" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text=" | "
            android:textColor="#999"
            android:textSize="18sp"
            tools:ignore="HardcodedText" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="openGithubRepo"
            android:text="Open Source"
            android:textColor="?attr/colorAccent"
            android:textSize="18sp"
            tools:ignore="HardcodedText" />
    </LinearLayout>

</androidx.constraintlayout.widget.ConstraintLayout>