I was also having the same problem. I tried the following and it’s working for me now:
Please try the following steps:
Go to..
File > Settings > Appearance & Behavior > System Settings > HTTP Proxy [Under IDE Settings] Enable following option Auto-detect proxy settings
On Mac it’s under:
Android Studio > Preferences > Appearance & Behaviour… etc
you can also use the test connection button and check with google.com to see if it works or not.