The error: “Can’t use any custom theme Just After updating to Android Studio Arctic Fox” is a common error that can show up in many ways. In this blog, we will go through some of the ways you can fix this issue. Read on.

How does it occur?

After upgrading your Android Studio to the most recent version, you may be unable to use any custom themes in the program.

What causes error?

The main cause of the above error is because Arctic Fox 2020.3.1 does not support the above feature. The direction for you is to update to the new patch or use a different version.

How To Solve The Error: “Can’t use any custom theme Just After updating to Android Studio Arctic Fox”?

Here are some solutions. Please consult and choose the method that is suitable for you.

Approach 1: Update kotlin version to 1.5.0

This issue was solved by eliminating all the content that were in the .idea folder in your project and the project was updated Kotlin version 1.5.0. 

Approach 2: If You’re Using Windows 

If you’re a Windows user, simply follow these instructions.

1. Simply navigate to C:\Program Files\Android\Android Studio/lib/ This Path. 
2. Find gson-2.7.jar. 
3. Simply rename gson-2.7.jar to gson-2.7.jar.disabled. 
4. Restart the Android Studio application. 
5. You may now utilize your own theme without any problems.

Approach 3: If You’re Using macOS

If you’re a macOS user, simply follow these instructions.

1. Simply navigate to /Applications/Android Studio.app/Contents/lib/. 
2. Find gson-2.7.jar. 
3. Simply rename gson-2.7.jar to gson-2.7.jar.disabled. 
4. Restart the Android Studio application. 
5. You may now utilize your own theme without any problems.

Conclusion

We hope you enjoyed our article about the error. With this knowledge, we know that you can fix your error: “Can’t use any custom theme Just After updating to Android Studio Arctic Fox” quickly by following these steps! If you still have any other questions about fixing this syntax error, please leave a comment below. Thank you for reading!