Android Studio: New activity opens as blank screen

Question

Hello!
I\'m just starting in Android Studio. I searched for a matching question but no joy, please yell out if you\'ve seen this one already!

My main activity ha

Answer 1

You can just go to dependencies in build.gradle file and add this line there.. & try.

implementation 'com.android.support:appcompat-v7:28.0.0-alpha1'