NullPointerException

[cljung]

Please provide us with the following information:

This issue is for a: (mark with an x)

- [ x] bug report -> please search issues before submitting
- [ ] feature request
- [ ] documentation issue or request
- [ ] regression (a behavior that used to work and stopped in a new release)

Minimal steps to reproduce

git clone project, load in Android Studio, update B2CConfiguration.java (Custom Policy), build/run the app in Android Studio, select B2C, run flow

Any log messages given by the failure

2020-04-09 15:03:25.392 9962-9962/com.azuresamples.msalandroidapp D/B2CModeFragment: Authentication failed: com.microsoft.identity.client.exception.MsalClientException: Attempt to invoke virtual method 'long java.lang.Long.longValue()' on a null object reference

This is the same issue as observed in another MSAL sample Azure-Samples/ms-identity-android-native#15

Expected/desired behavior

MSAL auth to work.

OS and Version?

Windows 7, 8 or 10. Linux (which distribution). macOS (Yosemite? El Capitan? Sierra?)
Win10

Versions

10.0.18362.720

Mention any other details that might be useful

Android Studio 3.6.2

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Thanks! We'll be in touch soon.

[marcelmedina]

I had the same issue when attempting to login on B2C.

In my case I decided to register my Own Application.

What was missing for me was the read scope.

You need to expose an API

and then assign the permission and grant admin consent:

On B2CConfiguration.java update the URL:

/**
     * Returns an array of scopes you wish to acquire as part of the returned token result.
     * These scopes must be added in your B2C application page.
     */
    public static List<String> getScopes() {
        return Arrays.asList(
                "https://YOURTENANT.onmicrosoft.com/b2c/demo.read");
    }

Hope that helps.