Update alphabet sidebar while scrolling

[flikkr]

I noticed when using the country picker, the sidebar containing the alphabet letter of the countries does not update with what is displayed on screen. It would be nice if the sidebar updates with the current country's letter that is on screen as the user scrolls through the list.

[jpainam]

Nice library, need to update the alphabet sidebar while scrolling.

[jpainam]

@flikkr Hi, I made a pull request to solve this problem, and added a lot of customization
Here a case use of my repo, you can check

CountryListPick(
    appBar: AppBar(
          // create your own appBar, default appBar(blue, centerTitle)
       ),
        pickerBuilder: (context, CountryCode countryCode) {
              // create your own picker, the default is countryflag, country name, keyboard_arrow_down
              return Row(
                children: [
                  Image.asset(
                    countryCode.flagUri,
                    package: 'country_list_pick', // do not forget this 
                  ),
                  Text(countryCode.code),
                  Text(countryCode.dialCode),
                ],
              );
            },
            theme: CountryTheme(
              // create your own theme customization, check CountryTheme class for more details
              isShowFlag: true,
              isShowTitle: true,
              isShowCode: true,
              isDownIcon: true,
              showEnglishName: true,
            ),
            initialSelection: '+62',
            onChanged: (CountryCode code) {
              print(code.name);
              print(code.code);
              print(code.dialCode);
              print(code.flagUri);
            },         
     ),

Hope to help,
You can use this by adding this line in your pubspec.yaml

country_list_pick:
    git: https://github.com/jpainam/country-list-pick.git