While importing a libGDX project I got the same message from Android Studio 2.2.
Went to File->Project Structure then selected Project and set
Gradle version
and
Android Plugin Version
to values identical to another project I had recently created with Android Studio 2.2 and updated SDK. Could then sync gradle. Did Build->Build Clean with no issues. Then did Run->Clean and Rerun and project ran fine.
Hope this helps.