Android Edittext with auto detection of credit card type

Question

I am dealing with payment option in android, By give an option to make a payment with credit card, some of the users may mistakenly choosing different credit card type for some

Answer 1

You would be watching the text as it is input, checking the first few digits to match the codes found here:

http://www.stevemorse.org/ssn/List_of_Bank_Identification_Numbers.html

This can be done with the TextWatcher listener Murtaza Hussain has pointed out.

check the text via:

switch (s.charAt(0)){
case '4':
    // show visa symbol
    break;
case '5':
    // show mastercard symbol
    break;
...