I wanted to learn how to integrate Dropbox functionality into my Android app, so I did a Google search for "dropbox android sdk". The first result led me to the download page for the Android SDK for the Core API, and at that point not knowing that there were multiple SDKs for the different APIs, I decided to start with that.
This article will focus specifically on getting the starter project for the Core API set up in Eclipse/ADT.
1. Download the Android SDK for Core API. Click on the download link on the download page.
2. Unzip the downloaded SDK, then import the sample project.
3. If you try running the project now, you see this:
So go to the site and register your app to obtain the app key and app secret. Just go to developers.dropbox.com and click on "App Console" on the left hand navigation pane.