Upload firebase information to Recyclerview - Android Studio

Question

My app stores customer information in Firebase and downloads it to a Listview, but I need to do a search with the information in Listview. I was told that the best way to do it is to use a Recyclerview with Searchview. The problem that I’m a little lost, with listview I used Firebaseui that made it easy to load the data from Firebase. But with Recyclerview apparently I have to create a Viewholder class (what I’m doubting, do I have to create really?), and I couldn’t get the Firebaseui documentation right for Recyclerview. Someone has some tutorial, or tip for this, I am researching a lot, so any information can be useful. Thank you.