Hey! This is Sumeet!
I have read your requirements and seen your attachment and will make the 3 activities for you with the best architecture for a great bug- free user experience.
I am a Lead Android Engineer with more than 6 years of experience in the android world. I have built beautiful UI's and have dug deep into the Android Framework. I have delivered both Features& Apps to a few of the most reputable brands like Goibibo, Rivigo and Luminous.
I believe in focusing on providing affordable & innovative technological solutions that are highly tested, robust and scalable . I will dedicatedly work to deliver the best to you. If you feel I am your guy do drop a message, would love to hear back!
Best Regards