Signal-Android/app/src/main/res/layout/custom_notifications_dialog_fragment.xml

<?xml version="1.0" encoding="utf-8"?>
<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:layout_width="match_parent"
    android:layout_height="match_parent">

    <androidx.appcompat.widget.Toolbar
        android:id="@+id/custom_notifications_toolbar"
        android:layout_width="0dp"
        android:layout_height="?attr/actionBarSize"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintEnd_toStartOf="@id/custom_notifications_enable_switch"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:navigationIcon="@drawable/ic_arrow_left_24"
        app:title="@string/CustomNotificationsDialogFragment__custom_notifications" />

    <TextView
        android:id="@+id/custom_notifications_message_section_header"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="12dp"
        android:layout_marginTop="16dp"
        android:text="@string/CustomNotificationsDialogFragment__messages"
        android:textAppearance="@style/TextAppearance.Signal.Body2"
        android:textColor="@color/ultramarine_text_button"
        android:textStyle="bold"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/custom_notifications_toolbar" />

    <TextView
        android:id="@+id/custom_notifications_enable_label"
        style="@style/Widget.Signal.Button.TextButton"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:text="@string/CustomNotificationsDialogFragment__use_custom_notifications"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/custom_notifications_message_section_header" />

    <TextView
        android:id="@+id/custom_notifications_sound_label"
        style="@style/Widget.Signal.Button.TextButton"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:enabled="false"
        android:text="@string/CustomNotificationsDialogFragment__notification_sound"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/custom_notifications_enable_label" />

    <TextView
        android:id="@+id/custom_notifications_vibrate_label"
        style="@style/Widget.Signal.Button.TextButton"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:enabled="false"
        android:text="@string/CustomNotificationsDialogFragment__vibrate"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/custom_notifications_sound_label" />

    <Switch
        android:id="@+id/custom_notifications_enable_switch"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:enabled="false"
        app:layout_constraintBottom_toBottomOf="@id/custom_notifications_enable_label"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@id/custom_notifications_enable_label"
        app:layout_constraintTop_toTopOf="@id/custom_notifications_enable_label" />

    <TextView
        android:id="@+id/custom_notifications_sound_selection"
        style="@style/Widget.Signal.Button.TextButton.Ultramarine"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:visibility="gone"
        android:gravity="end"
        app:layout_constraintBottom_toBottomOf="@id/custom_notifications_sound_label"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@id/custom_notifications_sound_label"
        app:layout_constraintTop_toTopOf="@id/custom_notifications_sound_label"
        tools:text="Default (Popcorn)" />

    <Switch
        android:id="@+id/custom_notifications_vibrate_switch"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="@id/custom_notifications_vibrate_label"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@id/custom_notifications_vibrate_label"
        app:layout_constraintTop_toTopOf="@id/custom_notifications_vibrate_label" />

</androidx.constraintlayout.widget.ConstraintLayout>