My Problem is, that I want to use any SDK or API to access my google drive from my android phone without using an existing google drive app on my android phone.
I read the instructions on this side: google drive sdk
The code examples does only work for desktop applications and the “integrate with Android” topic on the side does not provide any example how I can access my google drive from my android application.
I already read android-api-for-google-drive here but this leads only to more links and how-to’s which are far to complicated and fuzzy.
Has anyone experience with connecting to google-drive from an android application and could help with any example code or “clean-and-short-explained” tutorial?
Luckily, just after you asked this question, Google released their Play Services (see this link), which makes it a heck of a lot easier to access files using the Drive SDK & Drive API. Please see my post on Google Plus that gives a step-by-step walkthrough and code example on how to integrate an Android app with Google Drive documents: https://plus.google.com/u/0/114042449736049687152/posts/CD3L8zcJg5Z
In the tutorial, I reference a particular Google IO 2012 talk (slides at https://docs.google.com/presentation/d/1LrEKp2PqESsES3upS1xsSARz35KS-9QHnYFTKvS2yzM/preview#slide=id.p19), but please read my G+ post because I go through the various flaws, pitfalls, and omitted details from this presentation.
Before you start coding anything, get yourself signed up for the Google APIs (see this link), get into the API Console, and turn on both the Google Drive API and Drive SDK.
Good luck & have fun!