This is the first in a series of posts that will attempt to address building mobile widgets that will scale properly between multiple devices. We will look at how we can deal with multiple screen resolutions, varying screen PPI (pixel per inch) densities, as well as gracefully switching between portrait and landscape modes.

This article is going to build on the concepts that were introduced in the “How to really cope with varying screen sizes and pixel resolutions in Vodafone Widgets”. Here we will actually build a sample widget that scales dynamically.

This post is going to set the stage ...

The Wholesale Applications Community (WAC), an alliance of telecommunications companies committed to building an open applications platform, today announced its formation as a corporate entity, as well as the organisation’s leadership and board of directors. The company also announced that it will join forces with the Joint Innovation Lab (JIL), accelerating the commercial launch of WAC-enabled application stores.

At launch, WAC will allow operators to distribute applications through their respective application storefronts and charge users through their existing phone bill.  In this model, developers will set the application price and will receive a revenue share for the transaction. The ...

Vodafone launches Mobile Clicks 2010, an international contest to find the best mobile internet startups. After last year’s success in the Netherlands and United Kingdom, this year's event will also be open to startups from Portugal. The best entrants from each country in the competition will compete for a total prize fund of 150,000 Euros! Finalists from each country will go to the PICNIC event in Amsterdam, September 24th, where the winner and runner up will be selected.

Registration for this contest will start on July 27th, 2010 and end at midnight on August 22nd, 2010. Find ...

This months Vodafone developer newsletter is due to go out next week, aiming for Wednesday 28th. If you want to get our monthly summary of developer news, events and app / developer spotlights etc, then please sign up here.

The sizing of text and graphical elements on different displays is a fairly complex problem in Web development. It is different to what you simulate when you drag your browser window to different sizes – because it is more about the pixel's physical size. A working solution to this is built into the Vodafone Widget Manager and it's only based on standards: CSS, CSS Media Queries and JavaScript.

Pixel-Density

Displays have two obvious characteristics: The sheer physical size and the number of pixels they are made of, often called "resolution". However these two are actually combined into a third ...

Many thanks to everyone for the feedback regarding the Vodafone Apps Manager for Android (Developer Version). We wanted to let you know that we're now updating this tool based on some of the feedback we've received so please consider this and future releases a BETA until we announce a final version. We of course want to make sure that we deliver the best tools for you so please keep that feedback coming in!

And we also wanted to take the opportunity to highlight all the available channels where you can publish your widgets below,

Targeting high end handsets ...

The Wholesale Applications Community (WAC) is looking for your feedback so that it can support developers in the best way it possibly can and they’d like to get your input during this formative stage in the creation of WAC. The WAC team have created a survey which can be found below and would very much value your input. Many of the questions are multiple choice, but there are plenty of opportunities for you to provide more detailed comments and feedback. The WAC team will also randomly select two people from the entries who will win a phone each.

Access ...

If you’re in the Porto area on 8^th July, why not drop by the Talks 2.0 Dinners 2.0 event. At the event you'll get a chance to hear about "Development of Mobile Experiences in Portugal" and a chance to hear from the Vodafone App Star winner Pedro Campos, who will also be speaking there.

Find out more about the event here.

Talks 2.0 is an initiative that brings together a series of conferences/workshops/rendezvous where the professional and academic technological communities are invited to share information, coach and support entrepreneurship.

Dinners 2.0 ...

Join the Vodafone & JIL Developer team for a FREE two day event of training and hands-on development fun!

Whether you're an existing widget developer or completely new, we'll have sessions that'll guide you through the steps of development, testing and publication to market of your widgets through Vodafone and JIL

Get up to speed and ready for the event at developer.vodafone.com and JIL.org

Location (Google maps link ) -

HOTEL NH ALCALA 4*
Calle de Alcalá, 66
28009 Madrid

How do I sign up? - Click here to register

Event agenda -

Monday 12th July

Develop [12pm – 2pm ...