"A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects." (Robert A. Heinlein)
Showing posts with label Hello-World. Show all posts
Showing posts with label Hello-World. Show all posts

Saturday, 29 September 2012

The many steps of an Android Hello-World


As I promised on my last post, I couldn't resist not to write at least a hello-world application on my new phone. I went so through the, a bit long, task of installing the Android developer tools and writing my first program with it. I followed, step-by-step, instructions provided from Google Android SDK how-to pages. As a start I installed on my desktop computer but, soon, I'll try installing Android SDK on the EEEPC too.

Installation

The first step I took has been, of course, installing Eclipse IDE, a quite plain install from the software centre apart from some compatibility problem with Oracle Java 7. I had to revert to OpenJDK as default JVM in order to make Eclipse start.
The second step has been downloading and extracting Google's Android SDK. I though, at the beginning, about installing on a system folder like “/opt”, until I discovered that Android's Eclipse plug-in takes care of downloading and upgrading files on the SDK folder. I so went back to installing it on my home folder since running Eclipse as root user every time you have to do an upgrade is far from being advisable. By the way installing the SDK has only matter of extracting the downloaded file:
tar -xf android-sdk_r20.0.3-linux.tgz
Then I started Eclipse and selected the “Install new software” option from the “Help” menu opening the plug-in installation form. Here I added Google plug-in update URL (with the “Add...” button) and selected all the “Developer tools” items.