无法解析onCreate方法中的符号

Question

I'm using Intellij IDEA 13.1 on Windows. And one day I found my code in errors. Something like this:

It says "Cannot resolve symbol"

My Project Structure:

Can someone help me?

Answer 1

It looks like you need to add:

import android.os.Bundle;

Your IDE ought to be doing this for you. I've not used IntelliJ for a while, but I suspect you need to press Ctrl + Alt + O to fix the issue ( source ).