RecycerView not showing until after scrolling

It turns out that my element inside the RecyclerView needed a fixed height in order to work. Setting that height to 40dp caused the view to work as expected.

I suggest update your support lib/recyclerView if you have not. It maybe "wrap_content" problem. 'com.android.support:recyclerview-v7:23.2.1'

This worked for me. Make sure you are doing it on UI thread.

runOnUiThread {
    adapter.notifuDatasetChanged()
}