Android developer

The task is to adjust few things like rotation , full screen etc in video player and add in app purchase on android , IOS is working fine . pls review the IOS video from follow link, https://s3-ap-southeast-1.amazonaws.com/anacreation/xCode/ScreenRecording_11-12-2017+[login to view URL] TASK : The android video player should have features like ios video shown . 1. when we click the button, the player "drop down" 2. after it drop down, when we rotate, it will automatically full screen 3. when we rotate back to protrait, it will minimize. 4. when we click some item it doesn't has vidoe, it will move back up Need to set purchase option for android . some items are paid so for that a alert should open with these buttons to choose from as shown in the video "Login", "Register", "Purchase", "Cancel" , add funtionality for purchase button . i need you to create some sort of "method" so we can call to do the non consumable andorid in app purchase .