Android Question 1+4+15 calc math in EditText

[Mark Stuart]

Hi y'all,

I want to give users a feature that allows them to input numbers into an EditText view and then with a button calculate - add up - the numbers that were input.
Example: 1+4+15
The result obviously would equal 20 with the push of the button.

How it Would Work:
The user would have to type in the numbers and the plus (+) character, and end/finish with a number.
Then when ready to add up the numbers, they would press a button. The button code would have to some how calculate the numbers.

That's where I'm thinking there must be a Math library some where that parses the text, turns it into an equation and adds it to get a result.

Anyone aware of such a library, java, or B4X code that can do that?

Regards,
Mark Stuart

 

[aeric]

Yes.
Check this:

[B4X] Eval (expressions evaluator)

The attached class allows you to evaluate mathematical expressions with support for custom functions. It is compatible with B4A, B4J and B4i. Example: Sub AppStart (Args() As String) Dim e As B4XEval e.Initialize(Me, "Eval") Log(e.Eval("1 + Min(2, Max(-4, 1), 6)"))...

www.b4x.com

 

[Mark Stuart]

I'm giving ChatGPT my request. So far it seems possible to do it all with B4X code.
Even typing on the go or with a button to give a calculation.

I'll post the results after testing the code.

I'm just needing simple addition for my situation. No other math function needed.

 

[Erel]

So far it seems possible to do it all with B4X code.

Check B4XEval. It is implemented in B4X.

 

[PaulMeuris]

Or you could do it like this:
sum.mp4

Or with the B4XEval class like this:
Using an EditText