How to add a dictionary for spell check in Android Studio / IntelliJ Idea

You can download the Spanish (or any other language) ASCII dictionary from http://www.winedt.org/dictASCII.html and then add it to Android Studio as sebaszw said:

1. Go to Settings -> Spelling -> Dictionaries
2. Click plus symbol(+)
3. Select path to your dictionaries folder (inside you must have plaintext word lists with .dic extension)
4. Restart Android Studio

It worked for me without restarting Android Studio

In Android Studio (1.2.1.1 - 2.3.3) you can find this here:

File -> Settings -> Editor -> Spelling -> Dictionaries, and click "+" sign next to "Custom Dictionaries Folders" grid.

Important Note: You need to use UTF-8 character coding in your "language.dic" file if you would like to use an exotic language like Hungarian, Spanish, Portuguese, etc.

1. Download from http://www.winedt.org/dict.html the UNICODE language file.
2. Unzip and open it with Windows Notepad.
3. Use "Save as" and choose UTF-8 coding.
4. Open this file with Android Studio: File -> Settings -> Editor -> Spelling -> Dictionaries, and click "+" sign next to "Custom Dictionaries Folders" grid.
5. Restart Android Studio. Smile! You have not problems with nasty letters like "éÉíÍóÓöÖőŐúÚüÜűŰ".