Set a limit on EditText character

const val RESTRICTED_CHARS = "€<>;"

fun restrictCharacterFilter(regexString:String) = InputFilter { source, _, _, _, _, _ ->
    if (source != null && regexString.contains(source)) {
        ""
    } else null

}

textInputEditText.filters = arrayOf(restrictCharacterFilter(RESTRICTED_CHARS), 
emojiFilter(), InputFilter.LengthFilter(30))