How to update gradle in android studio?

Question

I installed Android Studio 0.1.9. Today I got and update to version 0.2 and of course I updated. After the installation I restarted Android Studio but now I get this messag

Answer 1

If your run button is gray. This is how i fixed it.

Go to Run in menu, and then press this:

Then it will run your Emulator, and your run button will become green again and you can use it. That is how i fixed it.