You see, the term, "okey-doke," meaning some sort of trick, game, scam, attempt to fool, shortchange, deceive or mislead, also came into use in the 1930s, principally among African Americans.

What is the meaning of Okie Dokie?

convention. Okey dokey is used in the same way as 'OK' to show that you agree to something, or that you want to start talking about something else or doing something else. [informal, spoken] Okey dokey.

Is it Okie Doke or okie dokie?

"Okey-dokey" has a slight lead over "okie-dokie" in popularity, but the latter spelling is also widely in use. (U.S. dictionaries seem to clearly prefer "okey-dokey.) Explanation: The OED lists all the above (dating from 1934) as variants.