EditText text formatting for forms

Question

I'm looking for a simple way for Android, when a user taps a in a edit text box, it will add a hyphen inbetween the number set. Sort of like a phone number, but will be set in a custom position.

For example Book number 05, CD number 15, track number5 = 0515-5. So when they start typing, the app will automatically enter the hyphen.

Should I use some type of listener and count how many characters are entered, then when it hits that number of characters, it will add the hyphen?

Thanks!

Answer 1

Use an InputFilter .

See my answers here: press "." many times (validate ip address in EditText while typing) and here: How to set Edittext view allow only two numeric values and two decimal values like ##.## for ideas on how to implement it