Android Studio 3.1 does not render xml file due to a java class missing

Question

Always shows me the error in the massages

java.lang.ClassNotFoundException: android.view.View$OnUnhandledKeyEventListener

My pr

Answer 1

Go to
Gradle scripts>build.gradle(module app) > change 'com.android.support:appcompat-v7:28.0.0-alpha3' to 'com.android.support:appcompat-v7:28.0.0-alpha1'

You may have something other than alpha3 after "-v7:28.0.0-" whatever it is just change it to alpha1.