Simple android app

I want a simple app developed for android phones. 1) the app will load in landscape 2) it will feature 4 screens which are accessed through swiping to the left and right 3) each screen will have 5 buttons (circles) and each button will link to a you tube video 4) when a button is pressed, the video will play a video from youtube in full screen (within the app) and at the end of the video it will go back to the app's screen. 5) there needs to be a twitter feed bar at the bottom of the app that updates with all twits (same one on all 4 screens) Please look at the file attached with this project to see a rough design of what i am looking at for the app. You can work on the app immediately using temporary images similar to the file i attached. Once the app is functional i will give the final artwork to replace the temporary ones with. As for file permission of users it will need access to internet and log of phone book if possible (or email accounts?) i don't know much on this side but would like your input on data collecting. There needs to a way where i can link different videos to buttons - maybe each screen represents a playlist and so auto updates according to the playlist (i need you suggestion on how this can be possible or alternative ways) and also a way in which the button images can be updated (changed ) if the video to the playlist (screen) is changed.