This app is very complete. I did use SQLite and XML parsers to get the data structure (questions, options and correct answers). Each question may be accompanied by a picture and an explanation on error, so students can learn why they are wrong.
XML parser also allows to easily load new content, changing XML files and compiling again. In a few minutes we can have a list of any other subject tests.
Another useful feature is to create random tests from questions stored in the system, making it possible to always have different tests to study.
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Main Menu
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Test List
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Statistics
