examples/android/CHIPTool/app/src/main/res/layout/barcode_fragment.xml

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <androidx.camera.view.PreviewView
        android:id="@+id/camera_view"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintBottom_toTopOf="@id/manualCodeEditText"
        android:layout_gravity="center"
        android:gravity="center"
        android:orientation="vertical" />

    <Button
        android:id="@+id/inputAddressBtn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="8dp"
        android:text="@string/input_address_btn_text"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <Button
        android:id="@+id/manualCodeBtn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="Submit"
        android:padding="8dp"
        app:layout_constraintTop_toBottomOf="@id/camera_view"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent" />

    <EditText
        android:id="@+id/manualCodeEditText"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:inputType="text"
        android:padding="8dp"
        android:text="MT:YNJV7VSC00KA0648G00"
        app:layout_constraintTop_toBottomOf="@id/camera_view"
        app:layout_constraintEnd_toStartOf="@id/manualCodeBtn"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>