Signal-Android/app/src/main/res/layout/device_transfer_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"
    android:orientation="vertical"
    android:paddingStart="32dp"
    android:paddingTop="64dp"
    android:paddingEnd="32dp"
    android:paddingBottom="16dp">

    <TextView
        android:id="@+id/device_transfer_fragment_title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="@string/DeviceTransfer__transferring_data"
        android:textAppearance="@style/Signal.Text.Headline.Registration"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/device_transfer_fragment_subtitle"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:gravity="center"
        android:text="@string/DeviceTransfer__keep_both_devices_near_each_other"
        android:textAppearance="@style/TextAppearance.Signal.Body1"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/device_transfer_fragment_title" />

    <androidx.appcompat.widget.AppCompatImageView
        android:id="@+id/device_transfer_fragment_alert"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/ic_warning_40"
        app:tint="@color/signal_alert_primary" />

    <ProgressBar
        android:id="@+id/device_transfer_fragment_progress"
        style="?android:attr/progressBarStyleLarge"
        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_toTopOf="parent" />

    <androidx.constraintlayout.widget.Barrier
        android:id="@+id/device_Transfer_fragment_middle_content_barrier"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:barrierDirection="bottom"
        app:constraint_referenced_ids="device_transfer_fragment_alert,device_transfer_fragment_progress" />

    <TextView
        android:id="@+id/device_transfer_fragment_status"
        style="@style/TextAppearance.Signal.Body1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/device_Transfer_fragment_middle_content_barrier"
        tools:text="Status" />

    <com.google.android.material.button.MaterialButton
        android:id="@+id/device_transfer_fragment_try_again"
        style="@style/Signal.Widget.Button.Large.Primary"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="16dp"
        android:text="@string/DeviceTransfer__try_again"
        android:visibility="gone"
        app:layout_constraintBottom_toTopOf="@+id/device_transfer_fragment_cancel"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

    <com.google.android.material.button.MaterialButton
        android:id="@+id/device_transfer_fragment_cancel"
        style="@style/Signal.Widget.Button.Medium.Secondary"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/DeviceTransfer__stop_transfer"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />


</androidx.constraintlayout.widget.ConstraintLayout>