Android Studio: Cannot resolve symbol r - how to fix the problem

Android Studio is a popular program for creating, reviewing and improving Android apps, but is sometimes plagued by the "Cannot resolve symbol r" error. We'll show you how to fix it.

Android Studio: Fix Cannot resolve symbol r

The error message Cannot resolve symbol r really drives many Android Studio users crazy. In most cases, this error occurs without warning. The following instructions will help you to fix the problem:

• Open the affected project and start cleaning it. To do this, go to the Build tab in the bar and click on Clean.
• After that, have to renew it. To do this, select the rebuild command under the same tab.
• Now an R. java file created. To do this, select one of the red R 's in the project and right-click to open the pop-up menu. Select Create class R there.
• Click Ok in the window and synchronize the project. Now the bug is fixed.

Android Developers presents: Android Studio 2.0

In rare cases, a new installation can help to fix the error. In the next tip, we will show you how to properly install and set up Android Studio.