I'm trying to edit a ConstraintLayout in the layout manager in Android Studio 3.0. Unfortunately, I get the following error:
The following classes could not be instantiated: - android.support.constraint.ConstraintLayout
Exception Details java.lang.NoSuchFieldError: ConstraintLayout_Layout at android.support.constraint.ConstraintLayout.init(ConstraintLayout.java:440) at android.support.constraint.ConstraintLayout.(ConstraintLayout.java:420) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730) at android.view.LayoutInflater.inflate(LayoutInflater.java:492) at android.view.LayoutInflater.inflate(LayoutInflater.java:394)
I can't actually drag around items, they all seem to be tiny dots in the upper left corner, although the layout works fine on the emulator.
I tried to follow advice from different questions on here. I rebuilt the project, invalidated cache, made sure that the ConstraintLayout support repositories are installed and in the gradle script (implementation 'com.android.support.constraint:constraint-layout:1.0.2'), changing the theme in editor, but nothing helped.
What else could I try to fix the problem?
Edit: my build.gradle (Module:app) file: https://gist.github.com/meyerlasse/44f06e18d6dab50593325f25f9b62bd2