Changes

With these changes made, the next step is to begin inserting some binding expressions into the view elements of the data binding layout file.

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:

    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"