No rendering target selected using Android Studio

Question

My Android Studio in activity_main.xml showing this problem: \"Rendering Problems No render target selected\" Help?

Answer 1

Top menu bar on the left side of the AVD Manager button you have a "Sync Project with Gradle Files" button. Click that. Android Studio may become sluggish for like 5 seconds, but you'll also see a loading wheel in the project files tab, and possibly a yellow bar on the top of activity_main.xml tab saying that Gradle is syncing. In about 5 seconds everything will be up to date, and you will see the device as expected. Hope this helps.

This really works

If it says Gradle Sync failed then download the missing platforms and platforms and then restart

It worked for me..