How to display a TextView when Recycler View is empty? - kotlin

Question

I would like to display a textView when my RecyclerView is empty.
I prepared this function but it doesn't work. I believe I should get the list from RecyclerView but I don't really know how.
I am in a fragment.
XML:
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recycler_view_list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:visibility="visible"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:listitem="#layout/item_list" />
<TextView
android:id="#+id/tv_no_records"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text="#string/nothing_to_display"
android:textSize="16sp"
android:visibility="gone" />
Fragment:
private fun displayList() {
val list = listOf<Shoe>()
if (list.isEmpty()) {
binding.recyclerViewList.visibility = View.VISIBLE
binding.tvNoRecords.visibility = View.GONE
} else {
binding.recyclerViewList.visibility = View.GONE
binding.tvNoRecords.visibility = View.VISIBLE
}
}
Adding the shoe (in ViewModel):
fun addShoe(shoe: Shoe) {
viewModelScope.launch(Dispatchers.IO) {
repository.addShoes(shoe)
}
}
Many thanks,
Anna

Answer 1

The conditions are inverted. When list is empty you are showing recyclerView and vice versa. Simply use a not check.
Consider below:
private fun displayList() {
val list = listOf<Shoe>()
if (list.isNotEmpty()) {
binding.recyclerViewList.visibility = View.VISIBLE
binding.tvNoRecords.visibility = View.GONE
} else {
binding.recyclerViewList.visibility = View.GONE
binding.tvNoRecords.visibility = View.VISIBLE
}
}