Graduate Credit app development course

I’m looking for a course in Android App Development that is online and offers graduate credit (so it can be applied to professional development credits for my school district). I know they are a myriad of choices for learning about the topic, but I’m looking specifically for something that can be done online and offers graduate credit. I’ve done some searching online and it seems there are options out there, but was wondering if anyone had experience with something they liked. I’ll be teaching a high school course this spring (for students that have already taken AP CS) and would like to teach app development.