After a year of coding in android and everything working perfectly till yesterday. Today, I found something really strange after upgrading to gradle 3 alpha 2 and studio 3 build 2.

This is the declaration of one of the activities throwing error:
[![This](https://i.stack.imgur.com/x9I3e.png)](https://i.stack.imgur.com/x9I3e.png) 

This is the activity code:
 [![This](https://i.stack.imgur.com/uuUEj.png)](https://i.stack.imgur.com/uuUEj.png) 

What is wrong?

**EDIT**

appcompat dependency:

```
  compile 'com.android.support:appcompat-v7:23.2.1'

```