Android手机号码判断正则表达式

  public static boolean isPhoneNumberValid(String phoneNumber)
  {
     boolean isValid = false;

     String expression = "^\\(?(\\d{3})\\)?[- ]?(\\d{3})[- ]?(\\d{4})$";

     String expression2 ="^\\(?(\\d{2})\\)?[- ]?(\\d{4})[- ]?(\\d{4})$";

     CharSequence inputStr = phoneNumber;

     Pattern pattern = Pattern.compile(expression);

     Matcher matcher = pattern.matcher(inputStr);

     Pattern pattern2 =Pattern.compile(expression2);

     Matcher matcher2= pattern2.matcher(inputStr);
     if(matcher.matches()||matcher2.matches())
     {
     isValid = true;
     }
     return isValid; 
   }