package com.example.app_10p5; import android.text.InputFilter; import android.text.Spanned; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * Created by beaus on 02/05/2016. */ public class DecimalDigitsInputFilter implements InputFilter { Pattern mPattern; public DecimalDigitsInputFilter(int digitsBeforeZero,int digitsAfterZero) { mPattern = Pattern.compile("(0|[1-9][0-9]{0,2})?([,.][0-9]{0,2})?"); } @Override public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) { String result = dest.subSequence(0, dstart) + source.toString() + dest.subSequence(dend, dest.length()); Matcher matcher = mPattern.matcher(result); if (!matcher.matches()) return dest.subSequence(dstart, dend); return null; } }