sayantanbanerjee16/photocalculator

Through this Android Application, one can capture photos consisting of mathematical expressions and the result will be calculated.

Photo Calculator Android App

Description

Through this Android application, we can capture photos consisting simple Mathematics expression and then the result is auto-generated and displayed. We can perform addition, subtraction, multiplication and division on two operands. All the successful executed expressions are stored in disc and can be displayed from History tab.

Generated APK

Navigate to /APK folder to get the generated debug APK.

Final Product

• The base of the application looks like:-

• These are the respective outputs of addition, subtraction, multiplication, division.

• The history tab displays all of the latest calculated expressions.

• Ofcourse the border test-cases are taken into account. Any wrong expressions are not executed and instead an Error message is shown.

Concept used

• Used Kotlin as the base language for this Android Application.

• Used Firebase MLKit Text Recognization API to recognize text from image which gets stored in a String which is executed through an Algorithm.

• For the History tab, I have used Room Persistence Library to store all the successful executed expressions onto the disc.