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| package com.dollearn.student.utils
|
| import android.text.InputFilter
| import android.text.Spanned
| import java.util.regex.Pattern
|
| class EnglishFilter:InputFilter {
| override fun filter(
| source: CharSequence?,
| start: Int,
| end: Int,
| dest: Spanned?,
| dstart: Int,
| dend: Int
| ): CharSequence? {
| val p = Pattern.compile(
| "^([a-zA-Z\\s]{1,20})\$",
| Pattern.UNICODE_CASE or Pattern.CASE_INSENSITIVE
| )
| val m = p.matcher(source.toString())
| if (!m.find()) return ""
| return null
| }
| }
|
|
