Facebook login android libraries complications

Question

We are developing an Android application and an SDK (android-library) for it. The SDK will be integrated into other affiliate applications. We want to use Facebook as our login provider for both the application and sdk.

Our understanding / plan is that partners will now need to integrate their application with facebook (create an application on developers.facebook.com, etc.), and then we can use the facebook SDK in our SDK, but with their applicationid . Then we send the token to the server to access the /meapi to get the facebook ID, which we then use as the login ID to our system.

• If we (via sdk) call fb session open and the host application is already authenticated with fb, will we get the same token?

• Are there any legal or other questions regarding this? Is this a privacy issue?

  • With facebook?
  • With host app developers?
  • Is there any way to deal with this exclusively with styles and style conditions?

• Is it possible to somehow request a new access token only with the necessary permissions? Will this solve this problem?

We initially considered the issue of whether we can have a separate application identifier for our SDK, but this will not work, because facebook requires us to associate keyhash with the application ....

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: , facebook . bummer - http://code-worrier.com/blog/changes-in-facebook-graph-api-2-dot-0/