Mobile GIS & LBS

Posts Tagged ‘Flex’

GeoSpatial Mobile Development: Flex or HTML5?

Sunday, October 2nd, 2011


I came across two interesting posts today. From James Fee on his excellent Spatially Adjusted blog:

“JavaScript not Flex/Silverlight — Yeah, it isn’t much of a surprise, open source users aren’t big Flex or Silverlight users, but JavaScript HTML5 web apps are everywhere and doing everything Flex/Silverlight can do, but work everywhere …. At this point it is safe to call every Flex/Silverlight location app as legacy as nobody in their right mind would be coding with those tools in 2012.”

and this on the Slideshare Blog:

“Ditching Flash for HTML5 feels like the right choice for us for a number of engineering reasons.

1. The exact same HTML5 documents work on the iPhone / iPad, Android phones/tablets, and modern desktop browsers. This is great from an operations perspective. This saves us from extra storage costs, and maximizes the cache hit ration on our CDN (since a desktop request fills the cache for a mobile request, and vice-versa). It’s also great from a software engineering perspective, because we can put all our energy into supporting one format and making it really great.

2. Documents load 30% faster and are 40% smaller. ‘Nuff said on that front, faster is ALWAYS better.

3. The documents are semantic and accessible. Google can parse it and index the documents, and so can any other bot, scraper, spider, or screen-reader. This means that you can write code that does interesting things with the text on the slideshare pages. You can even copy and paste text from a SlideShare document, something that was always a pain with Flash.”

These types of discussions have been going on since the dawn of the Web. New technologies replacing old. The advent of mobile certainly presents new challenges, and may well alter the landscape. But the end of Flash or Flex has been called wrongly so many times.

Adobe are an innovative company. There are ever more developers moving over to learn and use their Flex and Air products. And frankly, as somebody who has worked with these technologies since their inception, they are just fantastic for building the next generation of Web and mobile apps.

But will the decision by both Apple and now Windows, to not allow plug-ins on their mobile browsers end Flex as we know it? Remember Flex needs the Flash plug-in installed to run in any Web browser. At the moment Flex development continues strongly on the the PC based Web, where the Apple and Windows restrictions do not apply. HTML5 development continues in parallel. But, as many of us continue to believe, if mobile devices do take over from the PC, the mobile Web may well be all about HTML5.

Adobe Air started out life named Apollo. When it was launched, many in the development community could see the thinking behind the release, but never a good place to build Air apps in the PC world. That has all now changed. Air is an installed application, not relying on any browser plug-ins. Mobile Air offers the only cross platform mobile (installed) solution on the market today. No more building mobile apps in 3 different languages or more for each mobile platform. One code base runs on Apple IOS, Android and Blackberry. No need for third party conversions as provided by the likes of PhoneGap for HTML5. Adobe mobile Air apps are both fast and able to interact directly with native code.

Adobe Air and Flex are nearly identical. So looking forward, if Flex becomes less popular due to business decisions made by Apple and Windows; Adobe Air is about to see enormous growth. So maybe there is some truth in those who say its the end of Flex. But its just the beginning of Adobe mobile Air!

Video: ArcGIS 2.4 Running on IPad2

Thursday, August 4th, 2011


The release of both Flash Builder 4.5.1 and the Flex 2.4 version of ArcGIS are major milestones for geospatial developers looking to build mobile apps. The video below shows an AIR app running on an IPad2 using ArcGIS 2.4:

Video of ArcGIS 2.4 Running on IPad2

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