Create an application for Android

You need a simple application for Android. The application will be presented as a courseware. The essence of the application is as follows - the user can view the product catalog, watch the description of each product in a separate activation, which will show calorie content, fats, proteins, carbohydrates, etc. Product description. And also, it should be possible to specify an unlimited number of products in a separate activation, for each to indicate the weight and as a result, the application should give the total data on the use of calories, fats, proteins, carbohydrates, etc.