How to limit text field to only accept certain letters? - Kotlin Android

Question

Is there a way to limit a text field so that it only accept certain letters from an array?

Let's say I have an array:

val array = arrayOf("a", "b", "c")

I want the list to be manipulated inside code, so that the letters you can type in the text field is changed by code. How do I implement this via a class to make it accept only the letters a, b, or c?

you can use android:digits inside xml layout of your edittext — Rahul Singh Chandrabhan, Nov 30 '18 at 04:53
Possible duplicate of [How to restrict the EditText to accept only alphanumeric characters](https://stackoverflow.com/questions/23212439/how-to-restrict-the-edittext-to-accept-only-alphanumeric-characters) — Rajen Raiyarela, Nov 30 '18 at 04:55
I want the list of numbers to be manipulated in code. Is there a way to do that to using xml layout? — HUAN5235, Nov 30 '18 at 04:55
@HUAN5235 there are answers about how to do that using code in that question as well. — Vladyslav Matviienko, Nov 30 '18 at 06:45

Abdul Waheed · Answer 1 · 2018-11-30T05:05:04.503

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Yes you can do this. In XML of edit text you need to use below code

android:digits="abc123"

Here abc123 are your required digits you want your edit text should accept. You can also limit to abc as your desire. So use below code

android:digits="abc"

edited Nov 30 '18 at 05:05

answered Nov 30 '18 at 05:03

Abdul Waheed

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Is there a way to edit android:digits in kotlin code? It would save me a lot of hassle . – HUAN5235 Nov 30 '18 at 06:16
get reference of that edit text and you can play either way as you can play via xml. – Abdul Waheed Nov 30 '18 at 06:17

score 0 · Answer 2 · answered Nov 30 '18 at 06:12

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android:digits="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"

Pass whatever alphabets you want

answered Nov 30 '18 at 06:12

Anita

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How to limit text field to only accept certain letters? - Kotlin Android

2 Answers2