Authenticate internaly with dropbox through my app

The Dropbox API was designed with the intention that each user would link their own Dropbox account, in order to interact with their own files. However, it is technically possible to connect to just one account. The SDKs don't offer explicit support for it and we don't recommend doing so, for various technical and security reasons.

However if you did want to go this route, instead of kicking off the authorization flow, you would manually use an existing access token for your app. (Just be careful not to revoke it, e.g. via https://www.dropbox.com/account/security .)

Even being very insecure want to do this, but it still fails authentication.
Is there any example code for this task?

Sorry my English, Thanks

No, we don't have any sample code for this, since it isn't recommended. What error do you get?

I do not get any errors simply skips the Log "No Authentification" something I'm not doing well.

Use token generated by the console application

This is my code:

http://pastebin.com/HYhHca0s

It looks like you're checking authenticationSuccessful but this only returns true during an actual app authorization flow. However, since you're setting your access token manually, this doesn't apply. You can used isLinked to check if you have an access token set instead:

https://www.dropbox.com/static/developers/dropbox-android-sdk-1.6.3-docs/com/dropbox/client2/session/Session.html#isLinked()

Note that this doesn't validate the access token against the server though. If the access token has been revoked, later API calls will fail.

Well he was right, now goes well but I have another dilemma ...
No files get access here, notice in my codigome fails in
Entry entry = mDBApi.metadata ("/ dropfiles.dat", 1, null, false, null);

my code:
http://pastebin.com/ufJ8Vda7

How does it fail? (What's the error/stack?)

This

http://pastebin.com/j9tvhVnh

You're getting a NetworkOnMainThreadException, which only isn't specific to Dropbox. In short, you shouldn't make network calls (for example, Dropbox API calls like metadata which call the Dropbox API servers) on the main thread. You can find more information here:

https://developer.android.com/reference/android/os/NetworkOnMainThreadException.html

Ups! If the error was that, thank you very much for your help, I will continue with my development