New Layout editor in Android Studio 2.2 keeps showing this error on views like EditText and Buttons. kindly help.Also, any links that help in onboarding with the new constraint layout would be appr...

Android studio before 2.2 version at the xml design screen there was a view like "Preview all screen sizes" (check the image) but I cannot find that in Android Studio 2.2 Beta 2. My Android Studi...

BACKGROUND: The ADT (ver 21) allows preview thumbnails for various displays. Android allows the user to select a small/normal/large/huge font size in Settings->Display. The Android setting ma...