RecyclerView.onBindViewHolder called only once
The problem is not in your code. Make sure you set layout_height to wrap_content of RecyclerView child item.
Take care of the onBindViewHolder behaviour in the RecyclerView cycles. RecyclerView.ViewHolder position 0 itemView
android:layout_height="match_parent"occupies the current displayed screen. Scroll and onBindViewHolder should be triggered but make sure getItemCount was set appropriately.
Solution:
android:layout_height="wrap_content"Solution with ConstraintLayout as inflated itemView:
<?xml version="1.0" encoding="utf-8"?> <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="wrap_content"><!-- IMPORTANT --> <!-- ... --></android.support.constraint.ConstraintLayout>
In a case I came across, was when my recyclerview was scrollable only horizontally, not vertically.