registerForProvisionalAuthorization method
Instead of having to prompt the user for permission to send them push notifications, your app can request provisional authorization.
Implementation
Future<bool> registerForProvisionalAuthorization(
bool fallbackToSettings) async {
if (Platform.isIOS) {
return await _channel
.invokeMethod("OneSignal#registerForProvisionalAuthorization");
} else {
return false;
}
}