Hello,
I´m newbie to android, but i'm learning quickly
Before I have coded in PHP and Javascript...
But I would like tutorial where you can show me how to do some calculations like a calculator and I need to know how to input numbers in my app which is supposed to calculate equation ( I mean something easy like this 15/5+21-6+ln5-PI = xxx ) i read some texts and I didn't find solution and any example of it. please help
Thanks for help and tutorial if there will some

ditto ... any information on declaring functions would be useful

you'll need to break down your string and have functions to call the different operators with variables
shouldnt be to difficult

private Double domath(action, value, sourcevalue){};