No implementation found for method init on channel dropbox

[emmggi]

I get this error for init method in my flutter app.

MissingPluginException (MissingPluginException(No implementation found for method init on channel dropbox))

this is my code

void main(List<String> args) async {
  WidgetsFlutterBinding.ensureInitialized();

  await Dropbox.init("myapp", "key", "secret");
  await Dropbox.authorize();
  accessToken = await Dropbox.getAccessToken();

  if (accessToken != null) {
    await Dropbox.authorizeWithAccessToken(accessToken!);
  }

  runApp(const ProviderScope(child: MyApp()));
}

[BenelliFurtado]

I had the same problem. It was a problem with the AppDelegate.swift which now looks like this:

import UIKit
import Flutter
import ObjectiveDropboxOfficial

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
            
    override func application(
        _ application: UIApplication,
        didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
      ) -> Bool {
        GeneratedPluginRegistrant.register(with: self)
        return super.application(application, didFinishLaunchingWithOptions: launchOptions)
    }
    
    
    override func application(
        _ app: UIApplication,
        open url: URL,
        options: [UIApplication.OpenURLOptionsKey : Any] = [:]
    ) -> Bool {
          DBClientsManager.handleRedirectURL(url, completion:{ (authResult) in
            if let authResult = authResult {
                if authResult.isSuccess() {
                    print("dropbox auth success")
                } else if (authResult.isCancel()) {
                    print("dropbox auth cancel")
                } else if (authResult.isError()) {
                    print("dropbox auth error \(authResult.errorDescription)")
                }
            }
          });
          return true
        }
}