Remove country code code from phone number - flutter

Question

I am receiving the contact list from device, now I want to remove country codes from numbers maybe one number will be have the country code with +1 or 01
How can I do it , I want to remove country codes from all numbers any country

Answer 1

Here's what I would do. There are plenty of resources online that has a list of country codes. I'll download them and compare them with each number in the contact list. And finally run whatever removal operation I have.
Edit: Before running the above algorithm, I would first clean the data.
Remove all whitespaces.
Replace the leading 0 with + or vice versa depending on the available dataset

Answer 2

you can store them in a vector and when you retrieve the information you can skip the first elements which belongs to the country code. usually telephone numbers have 9 numbers besides country code. you can fix the output array indexes.

Answer 3

only way to remove the country code from the phone number is after making sure to which country the phone number belongs to.
if you are sure about +1 or 01 or any first two digit is the country code,
number.substring(2);
will give you the number.

Answer 4

if this is still relevant.
since all numbers are 10 characters you can do
number.substring(number.length - 10)
this would take the last 10 digits regardless of the country code with plus or not

Answer 5

aah hey, this question was asked earlier but anyways will answer it ..
THE FOLLOWING CODE IS WRITTEN IN JAVA
there are 2 ways to solve this !
1st
String abc="[phone]";
abc=abc.replaceAll(" ","");
int count=0;String Num="";
for(int i=abc.length()-1;i>=0;i--)
{
if(count<10)//change number 10 according to the preferred number of digits of Phone Number Excluding country code
{
Num=abc.charAt(i)+Num;
count++;
}
else
{
break;
}
}
System.out.println("Number Without Country Code : "+Num);
2nd
String abc="[phone]";
abc=abc.replaceAll(" ","");
String Num1=abc.substring(abc.length()-10);//change number 10 according to the preferred number of digits of Phone Number Excluding country code
System.out.println("Number Without Country Code : "+Num1);
Both The Ways Work Fine
but in the second way if then is less than '10' then it would cause a error !