I'm start using android studio 2.2 and try to play with ConstraintLayout but when I let android studio add it automatically it shows me that error
Using version 1.0.0-alpha7 of the constraint library, which is obsolete
Error:Could not find com.android.support.constraint:constraint-layout:1.0.0-alpha8.
You need to install
ConstraintLayout for Android inside
Support Repository package on
SDK Tools category of