tipbuddy1.xml

<TextView
    android:id="@+id/tvTotalAmount"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginStart="32dp"
    android:layout_marginTop="16dp"
    android:layout_marginEnd="32dp"
    android:textAppearance="@style/TextAppearance.AppCompat.Display4"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    tools:text="17.59"
    android:fontFamily="@font/avenir"/>