Show selected item when page initialized

[mrizkynurfajrie]

Is it possible in this package dropdown automatically shows selected item when page initialized. Of course the selected item is based on their items. I've try re-read the documentation, i still didn't found any params who gave me that function (or i just missed?).

Thank you for your great works!

[AhmedLSayed9]

Are you looking for valueListenable?

[mrizkynurfajrie]

Are you looking for valueListenable?

It's 404 not found. But, is valueListenable can initialize selected item? if you don't mind, can you show me how to use it?

[AhmedLSayed9]

Check examples at https://pub.dev/packages/dropdown_button2/versions/3.0.0-beta.13

[mrizkynurfajrie]

Check examples at https://pub.dev/packages/dropdown_button2/versions/3.0.0-beta.13

Pardon me, in that examples, i saw valueListenable function triggered only when onChanged condition, It means i should do select an item first then the values & UI will update. My question is, is it possible dropdown automatically select an item without manually open dropdown button (value initialized when page onInit)

[AhmedLSayed9]

https://pub.dev/packages/dropdown_button2/versions/3.0.0-beta.13

You can pass the initialValue, i.e:

final List<String> items = [
  'Item1',
  'Item2',
  'Item3',
  'Item4',
];
final valueListenable = ValueNotifier<String?>('Item1');

Item1 will be initially selected.

[mrizkynurfajrie]

https://pub.dev/packages/dropdown_button2/versions/3.0.0-beta.13

You can pass the initialValue, i.e:

final List<String> items = [
  'Item1',
  'Item2',
  'Item3',
  'Item4',
];
final valueListenable = ValueNotifier<String?>('Item1');

Item1 will be initially selected.

Ah I see. Your answer help me a bit, i will try with my condition. Thanks a lot, really appreciate your awesome works!