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Writing applications for multiple operating systems and a wide range of mobile devices can be challenging. The high demand for sophisticated mobile applications requires significant hardware. One solution is to provide Web applications, because they can run cross-platform on mobile devices. You don't need to use proprietary technology (such as Objective-C with Cocoa on the iPhone); you can use common Web technology. In essence, just one version of the application is needed. The main hardware power is provided by servers. In this article, explore the use of Web development in the mobile application space with a simple example that taps into the HTML5 standard.
The big idea is to equip activists, journalists, and any of the rest of us with something to be afraid of with the cell phones, tablets, and other luggable devices up to the complexities of the modern information space.
Open Data Kit (ODK) is a free and open-source set of tools which help organizations author, field, and manage mobile data collection solutions. ODK provides an out-of-the-box solution for users to:
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The App Inventor team has created blocks for just about everything you can do with an Android phone, as well as blocks for doing "programming-like" stuff-- blocks to store information, blocks for repeating actions, and blocks to perform actions under certain conditions. There are even blocks to talk to services like Twitter.
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Because App Inventor provides access to a GPS-location sensor, you can build apps that know where you are. You can build an app to help you remember where you parked your car, an app that shows the location of your friends or colleagues at a concert or conference, or your own custom tour app of your school, workplace, or a museum.
a fallu 15 ans pour que le quart de l’humanité soit doté d’un téléphone mobile, en 2003, et quatre ans seulement pour que la moitié de la population mondiale, soit 3,8 milliards d’individus, en soit équipée. La quasi-totalité des futurs nouveaux entrants résident désormais dans les pays du Sud, où les usages sont bien différents de ce que l’on connaît dans nos contrées dites “développées“.
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Il a fallu 15 ans pour que le quart de l’humanité soit doté d’un téléphone mobile, en 2003, et quatre ans seulement pour que la moitié de la population mondiale, soit 3,8 milliards d’individus, en soit équipée. La quasi-totalité des futurs nouveaux entrants résident désormais dans les pays du Sud, où les usages sont bien différents de ce que l’on connaît dans nos contrées dites “développées“.
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Alone in a room in his home in Bonn, Germany, Friedhelm Hillebrand sat at his typewriter, tapping out random sentences and questions on a sheet of paper.
As he went along, Hillebrand counted the number of letters, numbers, punctuation marks and spaces on the page. Each blurb ran on for a line or two and nearly always clocked in under 160 characters.
That became Hillebrand's magic number -- and set the standard for one of today's most popular forms of digital communication: text messaging.
"This is perfectly sufficient," he recalled thinking during that epiphany of 1985, when he was 45 years old. "Perfectly sufficient."
The communications researcher and a dozen others had been laying out the plans to standardize a technology that would allow cellphones to transmit and display text messages. Because of tight bandwidth constraints of the wireless networks at the time -- which were mostly used for car phones -- each message would have to be as short as possibl
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GPS enabled tour guides
A collection of projects and...
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Created by: Jose Luis Pajares
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cell phone accessories
Retailer of cell phone acces...
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