Flutter Intl Phone Field ignoring list from api

Question

So im trying to populate custom values into flutter intl phone field

IntlPhoneField(
              readOnly: config.isReadonly,
              focusNode: focusNode,
              initialCountryCode: 'IN',
              countries: allowedCountries,
              initialValue: initialValue,
              style: context.appTextBold.body3,
              dropdownTextStyle: context.appTextBold.body3,
              decoration: const InputDecoration(
                border: InputBorder.none,
                enabledBorder: InputBorder.none,
                focusedBorder: InputBorder.none,
                errorBorder: InputBorder.none,
                focusedErrorBorder: InputBorder.none,
                counterText: '',
                errorStyle: TextStyle(height: 0),
                isDense: true,
                // less vertical space, no horizontal padding so dropdown hugs left edge
                contentPadding: EdgeInsets.symmetric(vertical: 10),
                floatingLabelBehavior: FloatingLabelBehavior.never,
              ),
              dropdownIconPosition:
                  IconPosition.trailing, // keep icon with country code
              disableLengthCheck: true, // ensure no built-in validation errors
              validator: (value) => null,
              showDropdownIcon: !config.isReadonly,
              onChanged: (phone) {
                if (onChanged != null) {
                  onChanged?.call(phone);
                }
              },
            ),

Im passing the values from api into the phone field as a list. but this ignore the custom list im passing from api, but when i manually add it as shown below it's accepting the values.

abstract class AllowedCountryList {
  static const List<Country> allowedCountryList = [
    Country(
      name: "India",
      nameTranslations: {
        "en": "India",
      },
      flag: "🇮🇳",
      code: "IN",
      dialCode: "91",
      minLength: 10,
      maxLength: 10,
    )
  ];
}

Is there something im missing? Is there any reason why api data is getting ignored? I can see the values reaching the phonefield. But this is getting ignored. I also tried with didupdatewidget. How can i solve this. Also intl_phone_field only accept manually hardcoded values?!

Jashwanth Neela · Accepted Answer · 2025-11-19 19:15:10Z

0

IntlPhoneField only reads the countries list at build time. If you pass in a list from an API asynchronously, the field won’t update automatically, which is why your API data seems ignored. Hardcoded lists work because they exist when the widget first builds.

Solution:

Render the field after the API data is loaded:

if (allowedCountries.isEmpty) {
  return CircularProgressIndicator();
}

return IntlPhoneField(
  countries: allowedCountries,
  initialCountryCode: 'IN',
  ...
);

Or force a rebuild with a Key when the list changes:

IntlPhoneField(
  key: ValueKey(allowedCountries.hashCode),
  countries: allowedCountries,
  initialCountryCode: 'IN',
  ...
);

IntlPhoneField does not support dynamic updates of the countries list after it’s built, so you need to rebuild the widget to apply API-fetched data.

answered 2 days ago

Jashwanth Neela

6234 silver badges9 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Flutter Intl Phone Field ignoring list from api

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related