Blank screen on Android

Describe the problem

After login on the web browser nothing happens, the browser don’t redirect to the app. On iOS works great!

What was the expected behavior?

Been redirected to the app after login through the browser

Reproduction

Through a custom hook we manage the bucle to force the user to log in

import { useEffect } from 'react';

import { useAppDispatch, useAppSelector } from '../../redux/hooks';
import { handleAuth, handleAgentAuth } from '../../redux/thunks';

export const useHandleAuth0 = () => {
  const dispatch = useAppDispatch();
  const currentState = useAppSelector((state) => state.auth);

  useEffect(() => {
    const handleAuth0 = async () => {
      const response = (await dispatch(handleAuth())) as Auth0Response;

      if (response) {
        await dispatch(handleAgentAuth(response.email, response.accessToken));
      }
    };

    if (!currentState.handleAuthResponse.accessToken.length) {
      setTimeout(() => void handleAuth0(), 1000);
    }
  }, [dispatch, currentState]);
};

AndroidManifest

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="XXXXXXXXXX">

    <uses-permission android:name="android.permission.INTERNET" />

    <application
      android:name=".MainApplication"
      android:label="@string/app_name"
      android:icon="@mipmap/ic_launcher"
      android:roundIcon="@mipmap/ic_launcher_round"
      android:allowBackup="false"
      android:theme="@style/BootTheme">
      <activity
        android:name=".MainActivity"
        android:label="@string/app_name"
        android:configChanges="keyboard|keyboardHidden|orientation|screenSize|uiMode"
        android:windowSoftInputMode="adjustResize">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
      </activity>
    </application>
</manifest>

    defaultConfig {
        applicationId "xxxxxxxxxxx"
        minSdkVersion rootProject.ext.minSdkVersion
        targetSdkVersion rootProject.ext.targetSdkVersion
        resValue "string", "build_config_package", "xxxxxxxxxxxx"
        versionCode verCode as Integer
        versionName verName
        manifestPlaceholders = [auth0Domain: project.env.get("AUTH0_DOMAIN"), auth0Scheme: "${applicationId}"]
    }

  buildTypes {
       debug {
           applicationIdSuffix = '.dev'
           signingConfig signingConfigs.debug
       }
       dev {
           initWith release
           applicationIdSuffix = '.dev'
           matchingFallbacks = ['release']
           signingConfig signingConfigs.xxxxxxx
       }
       tst {
           initWith release
           applicationIdSuffix = '.tst'
           matchingFallbacks = ['release']
           signingConfig signingConfigs.xxxxxxx
       }
       uat {
           initWith release
           applicationIdSuffix = '.uat'
           matchingFallbacks = ['release']
           signingConfig signingConfigs.xxxxxxx
       }
       release {
           signingConfig signingConfigs.xxxxxxx
           minifyEnabled enableProguardInReleaseBuilds
           proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
       }
}

Environment

• Version of this library used: 2.11.0
• Which framework are you using, if applicable: RN 0.66.4
• Other modules/plugins/libraries that might be involved: React-Native-Config 1.4.5

[pupimarti]

@poovamraj https://github.com/auth0/react-native-auth0/issues/83 this is exactly same issue. I was able to fix it by changing this

public void onActivityResult(Activity activity, int requestCode, int resultCode, Intent data) {
    
    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            Callback cb = A0Auth0Module.this.callback;

            if (cb == null) {
                return;
            }

            boolean hasResult = resultCode == RESULT_OK &&
                    requestCode == AuthenticationActivity.AUTHENTICATION_REQUEST &&
                    data.getData() != null;
            if (hasResult) {
                cb.invoke(null, data.getData().toString());
            } else {
                final WritableMap error = Arguments.createMap();
                error.putString("error", "a0.session.user_cancelled");
                error.putString("error_description", "User cancelled the Auth");
                cb.invoke(error);
            }

            A0Auth0Module.this.callback = null;
        }
    }, 500);
}

[jalmonacidOA]

@poovamraj figure out the problem, in andoird/app/build.gradle, there is several buildTypes defined (the ones showed when this issue was open). The applicationIdSuffix is the problem, in the Allowed callbacks urls configuration the aplicationID is with and without the suffix, if i remove the applicationIdSuffix from the debug buildType, works perfect. So my problem is that, with the aplicationIdSuffix and a proper allowed callback, after login the app goes to a blank screen