hello people first create new project name it (first word always capital ) like " calculator" select "empty activity"
Android texTView, remove default text view to minimize gradle sync process take two plain text for input values (numeric value) five button called addition ,subtract,multiply,divide & remainder text view for "results "
now we completed " activity_main.xml" now start backend code " mainactivity.java" red text remove after set " id " in .xml file it's necessary to convert integer value into string ... because if don't convert type of input addition of 1+1 is 11 and after conversion addition of 1+1 is 2 copy onclick func() of addition
paste below change handle name now we finished the backend work...! now time to join front-end to back-end
set there respective main activity func() from onclick run application on emulator better way to run on your android phone if easily available run successfully...!
