update app by Java Mvc

update app by Jave MVC i have source code of my app by java MVC and I need now update by 4 requirement 1. the application is malfunctioning when uploading photos from the studio As for when shooting directly from the camera, things are good 2. Currently, when you open the application, the recall of the images needs something in order What is required is that the advertising data is called and is the primary interface of the application then product pictures are called And here note that the current application invokes the items images together What is required is that 20 products are displayed, then the transition from them to others, and so on in the same way, is displayed in all activity Ads first Products secondly Three cuts All activity IV 3. there is an aspect of slowing down the application, and if it is not addressed in Area No. 3, then it needs to address the cause 4. In the event that the Internet is very weak and the data is not called in the required way, then an alert message should appear after 15 seconds of attempts And show an interface with an alert, try again once there is a weakness or lack of internet connection