Stuck at authorisation screen @okrad

[avinashk369]

can you please share the fix for this. @okrad

At least I could open this as a popup, but nothing happens from there after authorize the redirect.

In the standard authorization flow, the authorization code is exchanged after the authorize button is pressed, but this does not occur and the popup is not closed in the first place, causing a redirect in the popup.

I was going to test on localhost, but am I doing something wrong?

Originally posted by @myConsciousness in #131 (comment)

[avinashk369]

authorisation using browser window works as expected but native twitter apps stuck at authorisation screen.

[Abhishek-Khanal]

Use custom scheme instead of https

[avinashk369]

Use custom scheme instead of https

Thanks, but i am already using custom scheme "appname://callback". Although it does work with browser but problem is with authorisation using twitter app.

<activity
            android:name="com.linusu.flutter_web_auth_2.CallbackActivity"
            android:exported="true"
            android:launchMode="singleTop">
            <intent-filter android:label="flutter_web_auth_2">
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />
                <data android:scheme="appname" android:host="callback"/>
            </intent-filter>
        </activity>

       final result = OAuth2Helper(
        TwitterOAuth2Client(
          redirectUri: "appname://callback"
          customUriScheme: "appname",
        ),
        grantType: OAuth2Helper.authorizationCode,
        clientId: dotenv.env['TWITTER_AUTH_CLIENT_ID']!,
        clientSecret: dotenv.env['TWITTER_AUTH_CLIENT_SECRET']!,
        scopes: ['tweet.read tweet.write users.read offline.access'],
      );

      final token = await result.fetchToken();
      print('Token: ${token.accessToken}');
 

authorisation using twitter app generates the token but it doesn't return back to the app. in browser case it generates the token and return to the app.

BTW i have tried flutter_web_auth_2: ^4.0.1 and oauth2_client: ^3.3.0 packages.

[Abhishek-Khanal]

This is what I am using and it's redirecting back to the app as expected.
`

        <intent-filter android:label="flutter_web_auth_2">
            <action android:name="android.intent.action.VIEW" />

            <category android:name="android.intent.category.DEFAULT" />
            <category android:name="android.intent.category.BROWSABLE" />

            <data
                android:scheme="appname"
                android:host="callback" />
        </intent-filter>
    </activity>`

final twitterClient = TwitterOAuth2Client(
      redirectUri: 'appname://callback,
      customUriScheme: 'appname',
    );
    final oauth2Helper = OAuth2Helper(
      twitterClient,
      webAuthOpts: {
        'intentFlags': 1 << 29 | 1 << 28 | 1 << 30,
        'preferEphemeral': true,
      },
      authCodeParams: {'response_type': 'code'},
      clientId: '*************Your id**************************',
      accessTokenHeaders: {'Content-Type': 'application/x-www-form-urlencoded'},
      clientSecret: '***********Your secret******************',
      scopes: ['tweet.read', 'tweet.write', 'users.read', 'offline.access'],
    );

[ThexXTURBOXx]

There is also a known problem with task affinities and launch modes (see #113). In order to ensure that flutter_web_auth_2 works correctly, set android:launchMode="singleTop" and remove any android:taskAffinity entries. This configuration is guaranteed to work.

Taken from https://pub.dev/packages/flutter_web_auth_2#troubleshooting-android