Soak the purple rice in clear water for at least 4 hours overnight.
Rinse the purple rice and white rice under running tap water 2 or 3 times, then drain.
Cook the rice mixture and water in the rice cooker.
After the rice is done, add the honey dates, dried red dates, and raisins immediately. Mix well and let everything sit inside the rice cooker for an additional 5 minutes, or until all the liquid is absorbed.