Using Butter Knife in Custom BaseAdapter SubClass Results in "Unable to inject views" error
Check if your @InjectViews has correct type. I've used ImageView instead of LinearLayout. That might be your problem too.
Update:
Make sure you are not using ButterKnife's @OnItemClick(R.id.non_list_view) with a non ListView. I was using it for a android.support.v7.widget.RecyclerView which was causing following exception:
java.lang.RuntimeException: Unable to inject views for MyFragment{... id=.... android:switcher:...}
Also check if you are inflating correct R.layout. file. If not - necessary views are not found and this error occurs.
I had a similar problem with ButterKnife, but the reason was that I was inflating my fragment with the wrong layout.
(I know the question was already answered, but I decided to post my solution in case someone had the same issue)