I was trying to display a iOS themed dialog box in my Flutter app, but I was unable to find anything in the docs
The keyword for Android theme/style is Material (default design), the keyword for iOS theme/style is Cupertino. Every iOS theme widget has the prefix Cupertino. So that, for you requirement, we can guess the keyword is CupertinoDialog/CupertinoAlertDialog
You can refer here for all of them https://flutter.io/docs/reference/widgets/cupertino
new CupertinoAlertDialog(
title: new Text("Dialog Title"),
content: new Text("This is my content"),
actions: [
CupertinoDialogAction(
isDefaultAction: true,
child: Text("Yes"),
),
CupertinoDialogAction(
child: Text("No"),
)
],
)