This package helps you to easily produce Nostr apps by providing generics Widgets and functions.

Features

• Nostr widgets
• Login persistence

Getting started

Add dependencies

flutter pub add ndk
flutter pub add ndk_flutter

Add internationalization

Follow the Official documentation

import 'package:ndk_flutter/l10n/app_localizations.dart' as ndk_flutter;

MaterialApp(
    localizationsDelegates: [
        ndk_flutter.AppLocalizations.delegate, // add this line
    ],
);

Usage

import 'package:ndk/ndk.dart';
import 'package:ndk_flutter/ndk_flutter.dart';

// wrap your Ndk instance
final ndkFlutter = NdkFlutter(ndk: ndk);

// reads saved accounts from secure storage and registers their signers in ndk
// typically called before runApp
await ndkFlutter.restoreAccountsState();

// call this every time the auth state changes
await ndkFlutter.saveAccountsState();

// available widgets (take ndkFlutter, not ndk)
NBanner(ndkFlutter: ndkFlutter);
NPicture(ndkFlutter: ndkFlutter);
NName(ndkFlutter: ndkFlutter);
NUserProfile(ndkFlutter: ndkFlutter);
NLogin(ndkFlutter: ndkFlutter);
NSwitchAccount(ndkFlutter: ndkFlutter);

By default, the logged-in user is used for user widgets; you can override it by passing a pubkey parameter.

TODO

• NUserProfile optionnal show nsec and copy
• NUserProfile show the letter in the Picture and make it as big as possible

Need more Widgets

Open an Issue

Shared wallet input UI

NWallets includes the wallet chooser, paste/manual input, Cashu discovery, LNbits setup, connection status/retry screens, and Alby Cloud/Coinos connection presets. The presets reuse albyGoConnectConfig for the host app name and callback URL. Register that callback scheme in your app and forward incoming URLs to NWalletsState.onProtocolUrlReceived; on mobile resume without a callback, call resumePendingWalletAuth. Legacy untagged providers are revalidated every five seconds while their connection screen remains open.

Only camera decoding is supplied by the host, so ndk_flutter does not depend on a camera plugin, WebRTC, or a native QR decoder:

NWallets(
  ndkFlutter: ndkFlutter,
  albyGoConnectConfig: const AlbyGoConnectConfig(
    appName: 'My app',
    appIconUrl: 'https://example.com/icon.png',
    callback: 'myapp://nwc',
  ),
  walletQrScannerBuilder: (context, onScan, onError) =>
      MyQrCamera(onScan: onScan, onError: onError),
)

MyQrCamera is your camera widget. Report decoded text through onScan, report failures through onError, and release camera resources on disposal. The shared UI removes the camera during nested input dialogs and connection status, then recreates it when scanning resumes. The same builder is used for nested NWC and LNbits QR input. Pass null on platforms without camera support; paste and wallet setup still work.

No provider list is needed. Set nwcConnectionOptions to replace the defaults, or pass an empty list to disable web presets. defaultNwcConnectionOptions is also available when extending the list. Existing walletInputScanner, nwcUriScanner and bolt12InputScanner overrides remain supported. showWalletInputDialog exposes the shared UI separately from NWallets.