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

<?xml version="1.0" encoding="utf-8"?>
<merge 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"
    tools:parentTag="androidx.constraintlayout.widget.ConstraintLayout"
    tools:viewBindingIgnore="true">

    <TextView
        android:id="@+id/numeric_keyboard_1"
        android:layout_width="72dp"
        android:layout_height="72dp"
        android:background="?selectableItemBackgroundBorderless"
        android:gravity="center"
        android:text="@string/NumericKeyboardView__1"
        android:textAppearance="@style/Signal.Text.TitleLarge"
        android:textColor="@color/signal_light_colorOnSurface"
        app:layout_constraintBottom_toTopOf="@id/numeric_keyboard_4"
        app:layout_constraintEnd_toStartOf="@id/numeric_keyboard_2"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/numeric_keyboard_2"
        android:layout_width="72dp"
        android:layout_height="72dp"
        android:background="?selectableItemBackgroundBorderless"
        android:gravity="center"
        android:text="@string/NumericKeyboardView__2"
        android:textAppearance="@style/Signal.Text.TitleLarge"
        android:textColor="@color/signal_light_colorOnSurface"
        app:layout_constraintBottom_toTopOf="@id/numeric_keyboard_4"
        app:layout_constraintEnd_toStartOf="@id/numeric_keyboard_3"
        app:layout_constraintStart_toEndOf="@id/numeric_keyboard_1"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/numeric_keyboard_3"
        android:layout_width="72dp"
        android:layout_height="72dp"
        android:background="?selectableItemBackgroundBorderless"
        android:gravity="center"
        android:text="@string/NumericKeyboardView__3"
        android:textAppearance="@style/Signal.Text.TitleLarge"
        android:textColor="@color/signal_light_colorOnSurface"
        app:layout_constraintBottom_toTopOf="@id/numeric_keyboard_4"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@id/numeric_keyboard_2"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/numeric_keyboard_4"
        android:layout_width="72dp"
        android:layout_height="72dp"
        android:background="?selectableItemBackgroundBorderless"
        android:gravity="center"
        android:text="@string/NumericKeyboardView__4"
        android:textAppearance="@style/Signal.Text.TitleLarge"
        android:textColor="@color/signal_light_colorOnSurface"
        app:layout_constraintBottom_toTopOf="@id/numeric_keyboard_7"
        app:layout_constraintEnd_toStartOf="@id/numeric_keyboard_5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/numeric_keyboard_1" />

    <TextView
        android:id="@+id/numeric_keyboard_5"
        android:layout_width="72dp"
        android:layout_height="72dp"
        android:background="?selectableItemBackgroundBorderless"
        android:gravity="center"
        android:text="@string/NumericKeyboardView__5"
        android:textAppearance="@style/Signal.Text.TitleLarge"
        android:textColor="@color/signal_light_colorOnSurface"
        app:layout_constraintBottom_toTopOf="@id/numeric_keyboard_7"
        app:layout_constraintEnd_toStartOf="@id/numeric_keyboard_6"
        app:layout_constraintStart_toEndOf="@id/numeric_keyboard_4"
        app:layout_constraintTop_toBottomOf="@id/numeric_keyboard_1" />

    <TextView
        android:id="@+id/numeric_keyboard_6"
        android:layout_width="72dp"
        android:layout_height="72dp"
        android:background="?selectableItemBackgroundBorderless"
        android:gravity="center"
        android:text="@string/NumericKeyboardView__6"
        android:textAppearance="@style/Signal.Text.TitleLarge"
        android:textColor="@color/signal_light_colorOnSurface"
        app:layout_constraintBottom_toTopOf="@id/numeric_keyboard_7"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@id/numeric_keyboard_5"
        app:layout_constraintTop_toBottomOf="@id/numeric_keyboard_1" />

    <TextView
        android:id="@+id/numeric_keyboard_7"
        android:layout_width="72dp"
        android:layout_height="72dp"
        android:background="?selectableItemBackgroundBorderless"
        android:gravity="center"
        android:text="@string/NumericKeyboardView__7"
        android:textAppearance="@style/Signal.Text.TitleLarge"
        android:textColor="@color/signal_light_colorOnSurface"
        app:layout_constraintBottom_toTopOf="@id/numeric_keyboard_0"
        app:layout_constraintEnd_toStartOf="@id/numeric_keyboard_8"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/numeric_keyboard_4" />

    <TextView
        android:id="@+id/numeric_keyboard_8"
        android:layout_width="72dp"
        android:layout_height="72dp"
        android:background="?selectableItemBackgroundBorderless"
        android:gravity="center"
        android:text="@string/NumericKeyboardView__8"
        android:textAppearance="@style/Signal.Text.TitleLarge"
        android:textColor="@color/signal_light_colorOnSurface"
        app:layout_constraintBottom_toTopOf="@id/numeric_keyboard_0"
        app:layout_constraintEnd_toEndOf="@id/numeric_keyboard_9"
        app:layout_constraintStart_toEndOf="@id/numeric_keyboard_7"
        app:layout_constraintTop_toBottomOf="@id/numeric_keyboard_4" />

    <TextView
        android:id="@+id/numeric_keyboard_9"
        android:layout_width="72dp"
        android:layout_height="72dp"
        android:background="?selectableItemBackgroundBorderless"
        android:gravity="center"
        android:text="@string/NumericKeyboardView__9"
        android:textAppearance="@style/Signal.Text.TitleLarge"
        android:textColor="@color/signal_light_colorOnSurface"
        app:layout_constraintBottom_toTopOf="@id/numeric_keyboard_0"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@id/numeric_keyboard_8"
        app:layout_constraintTop_toBottomOf="@id/numeric_keyboard_4" />

    <TextView
        android:id="@+id/numeric_keyboard_0"
        android:layout_width="72dp"
        android:layout_height="72dp"
        android:background="?selectableItemBackgroundBorderless"
        android:gravity="center"
        android:text="@string/NumericKeyboardView__0"
        android:textAppearance="@style/Signal.Text.TitleLarge"
        android:textColor="@color/signal_light_colorOnSurface"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="@id/numeric_keyboard_8"
        app:layout_constraintStart_toStartOf="@id/numeric_keyboard_8"
        app:layout_constraintTop_toBottomOf="@id/numeric_keyboard_9" />

    <ImageView
        android:id="@+id/numeric_keyboard_back"
        android:layout_width="72dp"
        android:layout_height="72dp"
        android:background="?selectableItemBackgroundBorderless"
        android:contentDescription="@string/NumericKeyboardView__backspace"
        android:scaleType="centerInside"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="@id/numeric_keyboard_9"
        app:layout_constraintStart_toStartOf="@id/numeric_keyboard_9"
        app:layout_constraintTop_toBottomOf="@id/numeric_keyboard_9"
        app:srcCompat="@drawable/ic_backspace_24"
        app:tint="@color/signal_light_colorOnSurface" />

</merge>