36.7 Adding Binding Expressions

The first binding expression will bind the resultText TextView to the result value within the model view. Edit the main_fragment.xml file, locate the resultText element and modify the text property so that the element reads as follows:

<TextView

    android:id="@+id/resultText"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content"

    android:text='@{safeUnbox(myViewModel.result) == 0.0 ? "Enter value" : String.valueOf(safeUnbox(myViewModel.result)) + " euros"}'

    app:layout_constraintBottom_toBottomOf="parent"

    app:layout_constraintEnd_toEndOf="parent"

    app:layout_constraintStart_toStartOf="parent"

    app:layout_constraintTop_toTopOf="...