flutter - flutter 如何比较两个不同格式的电话号码

Question

我正在尝试查找两个电话号码是否相同(两个相同的电话号码可能格式不同，因为+919998245345与9998245345和99982 45345相同)

Answer 1

为此，可以使用contains() Dart 字符串方法。我将尾随语句标记为粗体，因为它适用于String。确保以字符串格式获取数字，或将其转换为字符串，然后执行操作。
Alogrithm

1. Convert the number to be compared to String, or get the number as String
2. Remove all the white spaces using this code, your_phone_number_variable.replaceAll(new RegExp(r"\s+"), ""). So that every number should be having no white spaces in between for smooth operation
3. Use contains() like this, number1.contains(number2)

代码

// this is a comparision between +919998245345 and other numbers
// you can play around and get what you want
void main() {
  var _inputPhone = "+919998245345";
  var _checkPhone = "9998245345";
  var _anotherCheck = "99982 45345";
  
  // checking that white space removal works or not
  print(_anotherCheck.replaceAll(new RegExp(r"\s+"), ""));
  
  // I have just removed the spaces from the number which had the white
  // space, you can store the value using this code for every data
  // for unknown data coming from server side or user side
  _anotherCheck = _anotherCheck.replaceAll(new RegExp(r"\s+"), "");
  if(_inputPhone.contains(_anotherCheck)){
    print('99982 45345 and +919998245345 are same');
  }
  
  if(_inputPhone.contains(_checkPhone)){
    print('9998245345 and +919998245345 are same');
  }
  
}

输出

9998245345
99982 45345 and +919998245345 are same
9998245345 and +919998245345 are same