Noclassdeffounderror: Android.support.v7.widget.helper.itemtouchhelper$3

Hi I want to create swipe to delete on RecyclerView the result is a crash: Look at the build.gradle, I imported all the libs requeired. In code I'm able to use ItemTouchHelper clas

Solution 1:

Faced with this problem several days ago. In my case it was fixed by updating all com.android.support:* dependencies from 25.3.1 to 26.0.0. And make sure they all using the same version. Hope it will help someone.