Signal-Android/app/src/main/res/layout/boost_preference.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="wrap_content"
    android:layout_marginStart="@dimen/dsl_settings_gutter"
    android:layout_marginTop="10dp"
    android:layout_marginEnd="@dimen/dsl_settings_gutter"
    tools:viewBindingIgnore="true">

    <com.google.android.material.button.MaterialButton
        android:id="@+id/boost_1"
        style="@style/Signal.Widget.Button.Large.Secondary"
        android:layout_width="0dp"
        android:layout_height="58sp"
        android:textAppearance="@style/Signal.Text.Body"
        android:textColor="@color/signal_text_primary"
        app:backgroundTint="@color/signal_selectable_button_background_tint"
        app:cornerRadius="18dp"
        app:layout_constraintEnd_toStartOf="@id/boost_2"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:strokeColor="@color/signal_selectable_button_stroke"
        app:strokeWidth="2dp"
        tools:text="$3" />

    <com.google.android.material.button.MaterialButton
        android:id="@+id/boost_2"
        style="@style/Signal.Widget.Button.Large.Secondary"
        android:layout_width="0dp"
        android:layout_height="58sp"
        android:layout_marginStart="10dp"
        android:layout_marginEnd="10dp"
        android:textAppearance="@style/Signal.Text.Body"
        android:textColor="@color/signal_text_primary"
        app:backgroundTint="@color/signal_selectable_button_background_tint"
        app:cornerRadius="18dp"
        app:layout_constraintEnd_toStartOf="@id/boost_3"
        app:layout_constraintStart_toEndOf="@id/boost_1"
        app:layout_constraintTop_toTopOf="parent"
        app:strokeColor="@color/signal_selectable_button_stroke"
        app:strokeWidth="2dp"
        tools:text="$5" />

    <com.google.android.material.button.MaterialButton
        android:id="@+id/boost_3"
        style="@style/Signal.Widget.Button.Large.Secondary"
        android:layout_width="0dp"
        android:layout_height="58sp"
        android:textAppearance="@style/Signal.Text.Body"
        android:textColor="@color/signal_text_primary"
        app:backgroundTint="@color/signal_selectable_button_background_tint"
        app:cornerRadius="18dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@id/boost_2"
        app:layout_constraintTop_toTopOf="parent"
        app:strokeColor="@color/signal_selectable_button_stroke"
        app:strokeWidth="2dp"
        tools:text="$10" />

    <com.google.android.material.button.MaterialButton
        android:id="@+id/boost_4"
        style="@style/Signal.Widget.Button.Large.Secondary"
        android:layout_width="0dp"
        android:layout_height="58sp"
        android:layout_marginTop="19dp"
        android:textAppearance="@style/Signal.Text.Body"
        android:textColor="@color/signal_text_primary"
        app:backgroundTint="@color/signal_selectable_button_background_tint"
        app:cornerRadius="18dp"
        app:layout_constraintEnd_toStartOf="@id/boost_5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/boost_1"
        app:strokeColor="@color/signal_selectable_button_stroke"
        app:strokeWidth="2dp"
        tools:text="$20" />

    <com.google.android.material.button.MaterialButton
        android:id="@+id/boost_5"
        style="@style/Signal.Widget.Button.Large.Secondary"
        android:layout_width="0dp"
        android:layout_height="58sp"
        android:layout_marginStart="10dp"
        android:layout_marginTop="19dp"
        android:layout_marginEnd="10dp"
        android:textAppearance="@style/Signal.Text.Body"
        android:textColor="@color/signal_text_primary"
        app:backgroundTint="@color/signal_selectable_button_background_tint"
        app:cornerRadius="18dp"
        app:layout_constraintEnd_toStartOf="@id/boost_6"
        app:layout_constraintStart_toEndOf="@id/boost_4"
        app:layout_constraintTop_toBottomOf="@id/boost_2"
        app:strokeColor="@color/signal_selectable_button_stroke"
        app:strokeWidth="2dp"
        tools:text="$50" />

    <com.google.android.material.button.MaterialButton
        android:id="@+id/boost_6"
        style="@style/Signal.Widget.Button.Large.Secondary"
        android:layout_width="0dp"
        android:layout_height="58sp"
        android:layout_marginTop="19dp"
        android:gravity="center"
        android:textAppearance="@style/Signal.Text.Body"
        android:textColor="@color/signal_text_primary"
        app:backgroundTint="@color/signal_selectable_button_background_tint"
        app:cornerRadius="18dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@id/boost_5"
        app:layout_constraintTop_toBottomOf="@id/boost_3"
        app:strokeColor="@color/signal_selectable_button_stroke"
        app:strokeWidth="2dp"
        tools:text="$100" />

    <androidx.appcompat.widget.AppCompatEditText
        android:id="@+id/boost_custom"
        android:layout_width="0dp"
        android:layout_height="58sp"
        android:layout_marginTop="19dp"
        android:background="@drawable/custom_donation_amount_background"
        android:gravity="center"
        android:hint="@string/Boost__enter_custom_amount"
        android:imeOptions="actionDone"
        android:inputType="numberDecimal"
        android:textAppearance="@style/Signal.Text.Body"
        android:textColor="@color/signal_text_primary"
        android:textColorHint="@color/signal_text_primary"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/boost_4" />

    <TextView
        android:id="@+id/boost_custom_too_small"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:textAlignment="center"
        android:textAppearance="@style/Signal.Text.BodySmall"
        android:textColor="@color/signal_colorError"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/boost_custom"
        tools:text="@string/Boost__the_minimum_amount_you_can_donate_is_s" />

</androidx.constraintlayout.widget.ConstraintLayout>