Keep Dropbox authentication in memory for future use IOS

[Cross-linking for reference: http://stackoverflow.com/questions/28147032/keep-dropbox-authentication-in-memory-for-futur-use-ios ]

Whether or not the Dropbox app is installed shouldn't affect how the access token is stored. In either case, when the user finishes the app authorization flow, the Dropbox SDK stores the access token in the keychain and the user is returned to your app.

If this isn't working correctly for you, please let us know what SDK and version you're using, and post the relevant code snippets, as well as any log output from the app.