Build an andriod app that is a video player

I would like to create a mobile application for Android phones that works as a video player to play interstitual videos on a users handset at various times of the [login to view URL] application will require the users phone/handset to play a video OVER THE PAGE of the handset. upto 50 x 30 second videos will be provided to you as the developer, where the vidoes will be served to the user randomly at different times each day. videos are to be played 8 times a day (8am, 10am, Midday, 2pm, 4pm, 6pm, 8pm & 10pm) Once the video is finished playing the user will be able to 'Swipe out' of the video screen or to 'share the video with freinds through Facebook' The user experience for this application would require a short '10 second timer' to appear on the users interface (with an alert sound) advising that a video will start in '10 seconds' - this 10 second timer then must tick down to 1 second, after which the video will play on the screen Please forward me a portolio of all the apps you have developed & also please show me a 'back office' CMS that will allow me to view the information in real time & manage the info about users on this platform - that is how many videos are viewed, which ones are viewed, which ones have been shared etc