Learning Concurrency in Kotlin

Adding the label to the UI

The first step is to update the UI so that we have a TextView to display the amount of results. Let's go to activity_search.xml and add the following element searchButton:

<Button android:id="@+id/searchButton" ... /><TextView android:id="@+id/results"    app:layout_constraintTop_toBottomOf="@id/searchText"    android:layout_width="wrap_content"    android:layout_height="wrap_content" /><android.support.v7.widget.RecyclerView ... />

Then, we need to update the RecyclerView so that it appears below the newly created results:

<android.support.v7.widget.RecyclerView    android:id="@+id/articles"    android:scrollbars="vertical"    android:layout_height="wrap_content"    android:layout_width="match_parent"    app:layout_constraintTop_toBottomOf= ...