Failed to find style 'coordinatorLayoutStyle' in current theme In Android Studio 3.1

Question

The Android Studio 3.1 layout preview fails to find style \'coordinatorLayoutStyle\' in the current theme.

Failed to instantiated one or more classes.
 Excep         


        

Answer 1

This happened due to use of alpha version SDK 28

We need to change the android { ... } in "build.gradle" in app file
compileSdkVersion 28 to compileSdkVersion 27
targetSdkVersion 28 to targetSdkVersion 27

Also, try to change implementations like
implementation 'com.android.support:appcompat-v7:28.0.0-alpha3' to
implementation 'com.android.support:appcompat-v7:27.1.1'

Hope this works!

For Android Studio v3.1.*, in addition we need change:
implementation 'com.android.support:design:28.0.0-alpha3' to
implementation 'com.android.support:design:27.1.1'