libphonenumber是Google的公共Java、C++和Javascript库用来解析，格式化，存储和验证国际电话号码。 其中Java版本优化用于运行在智能手机上，并且用在了 Android framework 4.0 (Ice Cream Sandwich)以上的版本中。

功能亮点：

• Parsing/formatting/validating phone numbers for all countries/regions of the world.
• getNumberType - gets the type of the number based on the number itself; able to distinguish Fixed-line, Mobile, Toll-free, Premium Rate, Shared Cost, VoIP and Personal Numbers (whenever feasible).
• isNumberMatch - gets a confidence level on whether two numbers could be the same.
• getExampleNumber/getExampleNumberByType - provides valid example numbers for all countries/regions, with the option of specifying which type of example phone number is needed.
• isPossibleNumber - quickly guessing whether a number is a possible phonenumber by using only the length information, much faster than a full validation.
• isValidNumber - full validation of a phone number for a region using length and prefix information.
• AsYouTypeFormatter - formats phone numbers on-the-fly when users enter each digit.
• findNumbers - finds numbers in text input.
• PhoneNumberOfflineGeocoder - provides geographical information related to a phone number.
• PhoneNumberToCarrierMapper - provides carrier information related to a phone number.

String swissNumberStr = "044 668 18 00"  PhoneNumberUtil phoneUtil = PhoneNumberUtil.getInstance();  try {    PhoneNumber swissNumberProto = phoneUtil.parse(swissNumberStr, "CH");  } catch (NumberParseException e) {    System.err.println("NumberParseException was thrown: " + e.toString());  }

项目主页：http://www.open-open.com/lib/view/home/1418785741652