Android - Mobile clouds @ Exchange program seminars on cloud computing

Wednesday 07/07/2012 I and Emanuele Palazzetti, conducted a workshop in "Università degli studi di Perugia, dipartimento di Matematica/Informatica".

Was a long and funny day and this workshop, was one of the six for the "Exchange programme summer 2012",  between University of Perugia (IT) and Hong Kong Baptist University (HK).
Thanks to all the italy and hong kong studets was there, thanks to Professor Alfredo Milani and Valentina Franzoni.

The link of the page of the cloud computing events is here.

In the second part of the workshop, we did a full android application!
This application is a simple browser, with some nice features like a "Splash screen" and "Bookmarks save/delete" in a SQLite database.

Here the abstract of the seminar.
You can see the slide of first part here.
You can download the project resource (installation guide, a source tarball and the images) here.
Here you can find the full source code of the project on github to make your own fork.

I hope all the students (and professors :-) ) had fun building this app from scratch.

See you next seminar!

Android Error generating final archive: Debug Certificate expired on ..

If you are trying to build your android application using Eclipse ad you are getting an error like "Error generating final archive: Debug Certificate expired on dd/MM/yyyy" is because your signing debug certificate was created more than one year ago: the certificate auto-expires after 365 days.

The solution is to delete your debug.keystore in your android directory.

The exact location is  ~/.android/debug.keystore on Linux and Mac OS X and  %USERPROFILE%/.android on Windows.

After deleted it, the Eclipse plugin will generate a new certificate when you next try to build a debug package.

You may need first to clean the project.

More information about application signing here.

Happy coding =)