Here is my code. The issue is coming from the authenticationSuccessful failing after I create a new AndroidAuthSession with the previous access token.
// create the application key token
AppKeyPair appKeyToken = new AppKeyPair("APP Key", "APP Secret");
AndroidAuthSession session = new AndroidAuthSession(appKeyToken);
// try to get the session token from the shared preferences
String accessToken = getDropboxToken();
// check if the session token was retrieved
if (accessToken == null)
{
// if no token, then have the user sign in
dropboxSession = new DropboxAPI<>(session);
dropboxSession.getSession().startOAuth2Authentication(context);
}
else
{
// session token already available
dropboxSession = new DropboxAPI<>(new AndroidAuthSession(appKeyToken,accessToken));
// authenticate Dropbox login
authenticateDropboxLogin();
}
private String getDropboxToken()
{
// get the shared preferences area for the token
SharedPreferences sessionTokenRecord = context.getSharedPreferences("token", Context.MODE_PRIVATE);
// get the token key
String sessionToken = sessionTokenRecord.getString("accessToken", null);
return sessionToken;
}
private void saveDropboxToken(String accessToken)
{
// create a new shared preferences area for the token
SharedPreferences.Editor tokenRecordEditor = context.getSharedPreferences("token", Context.MODE_PRIVATE).edit();
tokenRecordEditor.putString("accessToken", accessToken);
tokenRecordEditor.commit();
}
private void authenticateDropboxLogin()
{
// check if the authentication was successful
if (dropboxSession.getSession().authenticationSuccessful())
{
// finish the authentication
try
{
dropboxSession.getSession().finishAuthentication();
saveDropboxToken(dropboxSession.getSession().getOAuth2AccessToken());
}
catch (IllegalStateException e)
{
showToast("Couldn't authenticate with Dropbox:" + e.getLocalizedMessage());
Log.i("Dropbox", "Error authenticating", e);
}
}
}
