Java tutorial
//package com.java2s; import android.text.TextUtils; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { public static boolean isPhoneNumber(String phoneNumber) { if (phoneNumber == null) return false; if (TextUtils.isEmpty(phoneNumber)) return false; Pattern pattern = Pattern.compile("^(86|\\+86)?[1][3,4,5,8][0-9]{9}$"); Matcher m = pattern.matcher(phoneNumber); return m.matches(); } }