How to solve error: Could not find method onClick(View) in a parent or ancestor Context for android:onClick

Question

I have seen that there\'s been some similar questions but the answers to those haven\'t helped me so far. The full error:

java.lang.IllegalStateExcept

Answer 1

I had the same problem and in my case, I changed Button in XML to android.support.v7.widget.AppCompatButton and it worked.

Code with Error:

Fixed Code: