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→Adding Binding Expressions
With these changes made, the next step is to begin inserting some binding expressions into the view elements of the data binding layout file.
== Adding 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:
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"
