Using shared preferences in android

I want need to use shared prefrences with unity. By using shared prefferences, I will store my key and data. Then, an other android application will use that stored data. So that I can make communication beween two application.

However I do not know how to use shared preferences in unity. I there anyy tutorial or example or is there any one who can explain the process.

Thanks for your help,

“shared preferences” = “PlayerPrefs”