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Why Auth.getDbxCredential method returns null after PKCE authentication (Dropbox Android JDK) ?
Hi,
I'm trying to use the new authentication flow with short-live tokens and refresh tokens on an Android App with Dropbox JDK.
I'm using the
Auth.startOAuth2PKCE()
method which works correctly, but when I tried to access the credentials in the onResume method,
DbxCredential credential = Auth.getDbxCredential();
credential.getRefreshToken(); // NullPointerException
I get a NullPointer exception.
I'd like to access and save the refresh token to the shared prefs and resuse it to prevent the user to be logged out every 4 hours.
Why the getDbxCredential() returns null ?
Thanks for your help.
didouchk In addition to what Здравко said, note that there is an Android-specific example here. Make sure you're implementing the authorization flow as shown.
And if something doesn't seem to be working as expected, please reply with:
- the version numbers of the Android platform and Dropbox SDK you are using
- the steps to reproduce the issue, including relevant code snippet(s), but don't include any access or refresh token(s)
- the full text of any error or unexpected output
4 Replies
Hi didouchk,
The description of your issue is not very "rich". Missing details on how you have done everything! The devil is in details. 😁
There is an authorization example for Java SDK. PKCE implementation could be seen in corresponding class. Take a look there and you can figure out what's missing in your code, I believe. 😉
Hope this helps.
didouchk wrote:..., but when I tried to access the credentials in the onResume method, ...
You are trying in onResume method, but is it as a result of real resume action (i.e. on authentication end)? 🤔 ... or ...?
- Greg-DB
Dropbox Community Moderator
didouchk In addition to what Здравко said, note that there is an Android-specific example here. Make sure you're implementing the authorization flow as shown.
And if something doesn't seem to be working as expected, please reply with:
- the version numbers of the Android platform and Dropbox SDK you are using
- the steps to reproduce the issue, including relevant code snippet(s), but don't include any access or refresh token(s)
- the full text of any error or unexpected output
I'm just pointing out that ALL the links here are broken since the repository changed on GitHub
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