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Offline Mobile GIS Feature Editing Part 1

Monday, January 2nd, 2012

An issue we often get questions about relates to offline GIS and mapping. How do we take our mobile device into an area which lacks WI-FI connectivity and still be able to access base maps and our layers? More than that how do we make edits to or update spatial features and sync these with a central server like ArcGIS? We have been pondering particularly this latter question for a while. Mansour Raad at ESRI, has been a huge help. We adapted some of his code and loaded both base map tiles and a shapefile on a smartphone. More than that we added the ability for users to tap a feature and, eureka, a pop up of the feature attributes appeared. I’ll admit we were jumping up and down in the office when we managed to get all working. Here is are two videos of the app.

Offline Mobile ArcGIS Basemaps and shapefiles

Offline Mobile ArcGIS Feature Editing

But. After testing we did find one problem. The shapefiles loaded very very slowly! Hmmm ….!

Let me digress for a moment. We recently wrote a surprisingly popular blog post reviewing available mobile GIS apps. What did we find? Amongst other things a lack of cross platform apps. Too many are just built for the Apple iOS platform. Also most do not use a spatial server. They are pseudo GIS apps. Meaning they have some GIS functionality but are not driven by a GIS. To us unless ArcGIS or GeoServer are on the server side of the mobile app, call it a clever mapping app. Not GIS. But a number use shapefiles, both loading and rendering and generating. Nice functionality. But none, that we have found, allow feature editing, and centralised storage. The latter is key since collaboration will always be important. Others will want to see and use your updates.

Ok, with that out of the way. Let’s look at the question posed. How does a true GIS mobile app allow non WI-FI connected users to visualize, edit and update layers in ArcGIS? As the videos above shows, base maps tiles loaded onto a mobile device for offline use are no problem. But ArcGIS layers are rendered on the fly. Meaning when online, each zoom or pan requires redrawing of the layer by ArcGIS. How do we store this in offline mode? The obvious choice is a shapefile. So store this spatial layer entity on the device. Load it when required.

Mobile GIS – Querying and Editing Features in a Shapefile

This brings us back to the slow load. In the demo we are using Adobe AIR. The applications takes the geometries in the shapefile and physically draws them. Slow .. you betcha. There are other approaches. Fast layers (again thanks Mansour) in one. Here we can improve the speed of drawing.

Another is not drawing the geometry, but converting the shapefile to a bitmap. Adobe AIR handles bitmaps super fast. So multiple pictures are loaded on the screen. The pictures represent shapefiles. One more potential approach is to convert to svg.

But, click on a feature in, say, a bitmap, maybe a single county in a state, and you are clicking on a picture. How do you relate the point click to the feature? More than that if you want to edit the attributes of that feature, again how do we store this data?

Mobile GIS – Offline Changes Synced with ArcGIS

Lastly, and most importantly, if we want others to have access to these updates how do we upload this data to ArcGIS?

As mentioned we have had requests for this functionality. We feel this relative trickle of emails may become a flood in 2012. So finding a solutions to this conundrum is something we are giving particular attention.

This is part 1 of a two part post. Here we laid out the question. Next we will discuss possible solutions.

A Review of Mobile GIS Apps

Wednesday, December 14th, 2011


There are an increasing number of GIS mobile apps available in the various app stores. Surprisingly few are cross platform; meaning one application which is built to run on multiple mobile devices; Apple, Android, BlackBerry. This is likely a result of the early dominance of Apples IPad and IPhone. Many mobile application development companies built apps which were targeted at the Apple devices. Unfortunately the language of choice for Apples IOS – Objective C – is only for Apples platform. If you want the same app to run on an Android device, the app needs rewriting. As we near the end of 2011, with the increasing popularity of Android and increased interest in the BlackBerry Playbook, the need for cross platform solutions puts many of these single platform apps at a disadvantage. The following is a link to an article which discusses some of the mobile GIS apps available in the various app stores. We plan to update it as more mobile apps become available:

Review of Mobile GIS Apps

Mobile GIS App Thoughts

Good GIS apps are now just appearing in the various app stores. Cross platform solutions are a must. As a company, we rarely now get clients asking for a single platform solution. The days of build this for the IPhone or IPad only are gone. ESRI are putting increasing effort into their mobile solutions. They are providing some great tools for companies like ours to build custom mobile GIS solutions for clients. It would be nice to see a good open source mobile GIS app launched into the app stores. An Openlayers/Geoserver mobile app would be a very nice addition. We like the standard Apple design (see WolfGIS), it looks very slick and professional. But we cannot help preferring apps which have their own unique feel and design. One style does not fit all. These will evolve over time.

Mobile GIS in Politics for 2012

Tuesday, November 29th, 2011


Politics revolves around organization. The increasing popularity of mobiles; IPhones, IPads and Android devices will revolutionize political organization and campaigning. It is now possible to provide field workers with mobile applications which will allow better organization and coordination of campaigns. Further, these applications will let users dynamically collect and upload data from the field. Campaigns and unit committees will be able to access this centralized data in real time. Improving both the speed and accuracy of decision making. Data collection and access is one thing, visualizing this data is quite another. The ability to search, query and tabulate this data is huge. But maps provide a very intuitive way to view this type of data. We will discuss in this article the potential uses of mobile applications for political campaigning. And how maps and mobile GIS can be used to better visualize campaign data.

Mobile Apps & Voter Data Management

Much in the world of political campaigning is centered around canvassing, phone banks and walk lists. Walk lists are for campaign field workers, essentially their voter contact list. Mobile applications running on smartphones such as IPhones and Droids are perfect for providing canvassers their walk list. Using application tools provided by the likes of MapQuest, these lists can be presented as markers on a map with optimized, or most efficient, routes. In addition, by using the inbuilt GPS on most smartphones, users can know their current location and collect data at that location. So a voters response can be captured on a smartphone dynamically, tied to that location and uploaded to a centralized database.

Historically, spreadsheets have been the main stay of political campaign organizing. Those days will soon be gone. Data centrally stored, updated from the field dynamically using mobile devices and from campaign headquarters will revolutionize politics. New software applications will become available for use on traditional PC’s and mobile devices which will tap into this data and allow questions to be answered or viewed quickly; the concentrations of likely voters or supporters for more efficient targeting, identifying locations for events, planning and moving collateral, generating and viewing walk-lists, and plotting sign locations. Interactive maps will prove important in visualizing much of this data. Field Directors will be able to almost instantly see the progress of sign placement operations, volunteer recruitment, and literature distribution. They will also be able to see the location of field workers while they are interacting with voters and view responses in real time. Unit and district chairs could use these systems for mass e-mails, the content being related to the voters district or location. Task lists could be created and posted for party or campaign employees, allowing them to record their progress. These updates would be instantly accessible to managers anywhere.

These types of system will dramatically improve efficiency, and reduce or remove redundant processes. They will provide a key edge over opponents. Enabling a dramatic enlargement of membership.

To summarize some of the areas impacted by these new systems which utilize mobile applications:

  • Planning – voting lists, election boundaries, location (possible and actual) and relocation of collateral (signs, literature)
  • Coordination – unit rosters, party and campaign offices, events
  • Canvassing – walk list, data collection

Mobile GIS Maps & Politics

Mobile devices, as we have said, will be increasingly key to political campaigns. Viewing maps, boundaries, and voter locations on a smartphone or mobile tablets will be crucial to field workers. As will recording data while in the field. We have already mentioned a few, but we can imagine a range of different questions we want answered and displayed on a map:

  • Show me an optimized route of my walk list
  • Display registered voter data on a map by definable region
  • Search and display by a set of criteria – Show all 2008 Primary Voters
  • Search, filter and display – Show 2008 Primary Voters who voted in the last 3 elections or show only hard democrats
  • Spatial query – Selecting a group of voters, by drawing a square on the map, will provide a voter summary. Maybe the number of voters selected, average distance between voters, total number of hard Republicans in this group, and number of perfect voters.

There are a range of options and tools we can use for maps in politics. Geographic Information Systems (GIS) offer tools which will help manage, organize, search, query and display campaign data. MapQuest offer both PC focused and mobile optimized tools ideal for political campaigns.

The Use of GIS in Politics

We have discussed the querying and display of campaign data. Often, at least in a GIS, this would involve either shapefiles or ArcGIS endpoints (ArcGIS from ESRI is the most popular GIS spatial server). These both are spatial data sources which contain features (voters and their point location), and attributes (a voters party allegiance for example). Rendering or displaying a shapefile or ArcGIS endpoint adds a layer to the map. Thus we can add points to the map which represent voters. Click on a point and the attributes of that voter are displayed. Querying is also possible against these spatial data sources; show me all hard Republican voters in a certain zip code.

We can extend this to editing and updating. Thus it is quite possible to update our spatial data sources using a mobile device. Maybe a voter has switched allegiances and is no longer a democrat; update that voters attributes on your smartphone which updates the central data store. Maybe a new area of homes has been built and voters here need adding to the data store. Again this can all be done by field workers using their mobile devices.

ESRI are the largest provider of GIS software in the world. Their flagship ArcGIS product offers a complete GIS solution, both for desktop and networked GIS. Moblie ArcGIS has become increasingly important. WebMapSolutions have been building a sample viewer which demonstrates some of the mobile functionality of ArcGIS. The video below shows the mobile GIS app running on an IPad:

Mobile ArcGIS running on an IPad

MapQuest and Politics

MapQuest are well known for routing and traffic maps, but they offer a plethora of other services. We are in the process of building a new mobile application which demonstrates some of the capabilities of mobile MapQuest. The functionality will include:

  • Walk List
  • Optimized Walk List Route
  • Sign placement and traffic flow
  • Data entry using device GPS
  • Query – map markers showing voters filtered by specific criteria

A video of this application will be posted here in due course.

Online & Offline Mobile GIS Maps & Politics

Less common in urban areas, but mobile devices may sometimes lack Wi-Fi connectivity. This means data cannot be transferred to and from the device. Maybe downloaded map data showing the location of the next voter on the walk list, or voter interview data uploaded to the central server. It is now possible to store data directly on the device. So complete walk lists routes can be downloaded while still online, and used with or without Wi-Fi connectivity. Similarly a light weight database on the mobile device can be used to store data recorded at a location, for later upload when back in Wi-Fi range. The video below shows online and offline map usage on an Android smartphone. The base map tiles are stored on the device, as is a shapefile of Utah counties. The latter could just as easily be voter points or election boundaries.

Mobile GIS Online and Offline

Existing Political Software Systems and The New Mobile Paradigm

Existing, lets call them legacy, political software systems are slow and clunky. Mapping capabilities are limited. As already mentioned, decisions are still often made with the help of spreadsheets. Field workers rely on printed sheets, phones and notepads for organization and data gathering. In short, current software applications used for political campaigns are inadequate.

Existing systems can be dramatically improved. Mobile applications will be a particularly key component. Centralizing data and extending, maybe rewriting, existing software applications to allow easier management, querying and visualization of this data will be crucial. Mobile applications in politics will provide both access to the data while in the field (no more pens, papers and printed maps), and the ability to edit and add new data. Mobiles provide up to date information dynamically; walk lists, routing, tracking field workers. They also allow much of what was done in the office, to now be done done in the field. So querying by voter attributes using a fixed distance from your current location. And designing your canvassing around these dynamic queries. Applications written for PC’s will provide advanced functionality and management of both the data and ultimately the campaign.

Maps will be ever more important for displaying much of the data both in the office and in the field using mobiles.

Mobile Politics Application Development

So how would you build such a system? There are a number of proprietary and open source content management and constituent relationship management solutions. Joomla and CivicCRM are two excellent open source options. These can serve as the central system, PC based work can utilize the modules available in these types of frameworks. The key mobile and mapping portions of this picture will need custom development. These would be integrated into the central system. So whether it be leveraging the power of MapQuest or a full GIS, these could be integrated into the PC based system, and custom built for mobile.

As a mobile GIS application development company we specialize in these types of integrations. Our focus is Web and mobile application development, with a particular emphasis on location based services (LBS), mobile GIS and maps. Mobile will be very important to the upcoming election cycle. Political campaigns can now leverage mobile to make faster better decisions. We can help build or integrate both mobile and maps into any political campaign.

Mobile GIS App Planning Guide

Sunday, October 30th, 2011

Introduction

This article is targeted at individuals or companies looking to build a new mobile or Web application. It is a guide to help you move from a great idea to a great application. Oh, and it is short.

Let’s begin by imagining a house. Your dream house. The home you’ve always wanted to build. At the moment the layout, design, color etc. are in your head. New ideas are continually being added to this mental picture you are forming. You’d like to make this dream reality. But how? You look for professional help; maybe a builder, an architect.

Imagine you call this professional. You start the conversation as follows:

“Hello. My name is Joe. I want to build my dream house. It will need to have 4 bedrooms and a kitchen. How much will that cost to build?”

How do you imagine the builder, or architect will respond?

This is a silly example, which has little relation to software development, I hear you saying. Right? Wrong!

Software development is just like house building. You would be surprised how often we field calls similar to the above.

“We would like an application which does X. How much will that cost to build?”

If you are serious about making a dream reality. You need to start with something tangible. Mental pictures are only useful to you. Once you start involving others you need to transfer your thoughts.

Don’t get us wrong; cost at some point will be an important consideration. Cost will determine what is and isn’t possible. Cost may force changes to some of your ideas. Cost will determine who you choose to do the work. But starting with cost without providing a well thought out, and clearly laid out picture of your thoughts. Will leave your dream just that, a dream!

Mobile Application Development Brainstorming

Let’s start with brainstorming. This is the process of transferring ideas to paper; often many crumpled pieces of paper. Sure there are tools out there to create mind maps. We are old fashioned. Put everybody in a room, grab some paper or a white board and start scribbling. It’s amazing what you can come up with. Figure 1 below are the initial roughs for a mobile app we recently worked on. It shows roughs for an IPad and IPhone version of the same app.

Mobile Application Development Roughs

Figure 1: Mobile Application Roughs

These scribbles can be as detailed as you would like. But they are a huge step forward. You’ve transferred thoughts to something tangible. A format others can understand.

Mobile Application Flow

Ok, so we have our initial picture(s) of what the application will be. Let’s formalize things a little. Provide an idea of application flow. Figure 1 includes some simple flow; if I click button X it takes the user to screen 2 which shows content A. Get it?

Mobile Application Development Professionals

So now is it time to turn to a professional? Definitely maybe. If you are comfortable that you have all the application pieces in place, in a format which is understandable to a stranger. Definitely. Remember, pictures work better than words. Always. The words simply support the pictures.

Planning and design are two crucial parts of the application development process. But these are only relevant once you have decided on who will help architect and build the application.

You will find that the professionals you choose to show your application roughs will have questions. Good roughs will help others understand what you are trying to do.

Mobile Application Development Estimates

With a good understanding of what you are trying to build. A software development company can start thinking about some of the technical challenges. This then leads to time estimates for developing the application. Ultimately to the magic number. Estimated cost.

Here is a dirty secret. Developers often take their initial time estimate based on the roughs we have described above. Double it. Then add 10%. What ….because they are greedy?

Estimation is a very inexact science. A developer will always try to overestimate rather than underestimate. Think about it. What would you prefer, a developer saying:

“Great news. We finished the work for less than you expected to pay.”

or

“The work will take longer than expected. That will cost you more money.”

Mobile Application Development – Making Changes

So you find the perfect company to do the work, at the right price. You start moving forward. Then change what you want. Maybe you forgot something, or, have new ideas. Does that change the cost? Quite possibly. By how much? Ask the question. It is surprising how often people make changes to applications, without considering cost implications.

Mobile Application Development & Successful Outcomes

The best applications in the mobile and Web markets are those which start with a great idea. An idea which is transferred to an understandable format and shared. Discussed. Changed. A great development company found to do the work. At the right price. Planning, design, feedback, changes occur iteratively. Your dream becomes reality.

The End (or just the beginning)

WebMapSolutions are mobile application developers. The company specialises in building locations based services (LBS), GIS and mapping applications. If you are looking to build a mobile solution, or just need a better understanding of the mobile sector, contact: rory@webmapsolutions.com

Offline Mobile GIS

Sunday, October 23rd, 2011


You might be wondering how you access GIS layers when your mobile has no Wi-FI access. Well wait no more, the solution is at hand. The demo below shows ArcGIS being used offline. Before you open source folk get upset, this solution could also be applied to a Geoserver/Openlayers/OpenScales solution. The app shows storage of base map tiles and a shapefile on the actual mobile device. In offline mode, we show loading this data. Very cool. Thanks a million to Mansour at ESRI for helping us move this forward. See the application demo in the link below:

Offline Mobile ArcGIS Demo Video

This functionality may at some point be added to our GeoMobile for ArcGIS mobile app. You can get the current free version of the app here.

Q&A – Mobile App Development Planning

Friday, October 14th, 2011


Q. We want to build a mobile application. Where should we begin?

Before jumping in, first get a better understanding of mobile. That does not mean trying to understand the intricacies of the technology. But a good general picture of this still confusing mobile world will be a big help in the long term?

Q: I’ve tried surfing the Web to learn more about mobile, but remain confused. Is there a good source I can go to which explains in simple terms mobile and mobile application development?

Many Web mobile articles are too technical. Bu it is worth spending time looking for good introductory articles. Talking to mobile application development companies can also be a good idea. Sales and marketing people may be helpful. Better would be to talk to an actual developer or individual with a technical background. That can be somewhat daunting. But often technical folk can help demystify things. But be warned, steer them clear of technical jargon. Some companies offer free initial consultations. We’ve trained our technical staff to make consultations jargon free. We can certainly answer your questions. But don’t stop with us, talk to others. Build your knowledge base, so you have a clear understanding of all your options.

Q: Ok, I’ve spoken to a number of companies, and have a good idea of the mobile landscape. I understand I have the option of a mobile Web application or an installed mobile application. Tell us more?

A mobile Web application is like any Web application you can access from your PC. It is just optimized for mobile. When I say optimized I mean it has a simpler design (mobile screens are smaller) and built for finger interaction (as against mouse). Most people are looking for cross platform mobile Web apps, or an application which runs on all mobile browsers. That means in terms of development choices Flash, Flex, Silverlight are out. HTML5/Javascript is best choice.

Installed applications are those downloaded from the Apple App Store and Android Market. To have an application built you have two options; a native app or hybird. So for Apple a native app would be written in Objective C. Will that same app run on an Android device. Yes but only if you write it in a different language. Step up hybrid apps. These you write once and deploy to all devices. Application written in Adobe mobile AIR are hybrid. Are there advantages one over the other? Some, but maybe not enough to incur the cost of multiple native apps.

Q. Which is better an installed or mobile Web application?

That depends (you knew I would say that). Web apps are easier to distribute, just provide a URL and bingo. Write the mobile web app in HTML5/javascript and you have a cross platform solution. But try to store an image taken with a camera, and you are out of luck. Hybrid apps are available through an app store. You can charge for every download. Reaching deeper into the guts of the device, to store data in a local database is easy. Just a few examples of strenths and weaknesses. Everything depends on the apps functionality and the business model you might have in place.

Q. Can you convert a mobile (Javascript) Web application to an installed app?

Yes you can use PhoneGap. Now owned by Adobe who have promised to keep it open source.

Q: Your company specialize in building location focused mobile applications, does that mean you build mapping applications?

Certainly maps are a part of what we do. But our real focus is location. Answering questions like what or who is near me.

On the mapping side we’ve partnered with MapQuest to provide cross platform routing, traffic and local search mobile capabilities. We also work closely with ESRI to provide mobile GIS solutions using their ArcGIS product. In fact we have just launched GeoMobile for ArcGIS, a free mobile ArcGIS viewer.

But we define ourselves by location. Mobile devices have on-board GPS, so at any time the device can report where it is. That means an application running on the devices can reach out to Foursquare, Yelp or any other social networking company which shares their data. Passing current location to these provider will allow a mobile application to list data they can provide; people nearby, Mexican restaurants within 5 miles etc. We have been very involved with building apps focused on data collection by location. Field workers on site often need to collect data and link that to the collection point, surveyors, field repair crews, field technicians to name a few. Storing this data in a central computer extremely valuable and very efficient.

Q: Mobiles are still relatively new, mobile application development is both complicated and expensive. We will hold off on developing mobile apps, do you think we are being sensible?

Don’t be scared of mobile. For development the smoke is clearing. New developments by Adobe and HTML5 have helped provide less complex, simpler solutions. Mobile may well be the future of networked computing. Be careful not to be left behind.

Q. How much will a mobile application cost me to build?

Ah, the question we all want answered. Mobile app development continues to come at a cost premium. This will change with time. Depending on where you are, expect to pay in excess of $100 hr. Remember the old adage “if you pay peanuts you will get monkeys”. Hiring top development companies is what you should targeting. They don’t need to be big, but need strength and depth of experience and skills.

The development process usually looks like this:

  • Initial consultation – idea sharing
  • Planning – wireframe and architecture design
  • Design – application look and feel
  • Coding – let the nerds at it
  • Testing
  • Delivery

Q. How can we reach you?

You can reach us on 801-733-0723 or email rory@webmapsolutions.com

GeoSpatial Mobile Developers

Thursday, September 22nd, 2011


As a company, we sometimes wonder who are our competition. Fundamentally we build mobile location based solutions, both mobile GIS and location based services. Turning to Google I tried some searches. A number of variation on a theme so; mobile gis application developers, geo-spatial mobile developers, mobile location based application developers, mobile location services, location cross platform mobile development. To my amazement the searches came back with very few companies. Very strange. It seems an obvious fit; mobile applications which take advantage of, and utilize mobile data.

Is geo-spatial or location based mobile application development just a niche? Maybe most application development companies are focused on general mobile app development? Perhaps its because mobile is so new, that both clients and software development companies are still trying to fit mobile into their overall plan.

Mobile Location Services

The mobile location sector is very fragmented at the moment. On one side we have ESRI, the worlds biggest GIS company. They were slow in entering the Web, they are moving quicker with mobile, but their world remains GIS focused. And that is a niche no doubt. They have yet to broaden their appeal beyond their core, mostly public, GIS community.

Mobile Application Development IPad

Figure 1: ESRI ArcGIS running on the IPad

The location based sector is more dynamic. Its somewhat a bubble at the minute, with tonnes of VC money pouring into some frankly daft ideas. But there are some gems within that world. Like the dot com boom and bust, many will fall but some real innovation will come from this sector. There are huge opportunities to build location based applications, classed as location based services (LBS), to use in marketing, advertising and beyond on mobile devices. At present this sector is narrowly focused on consumers. Broadening solutions to the enterprise offers mouth watering possibilities. Figure 2 below shows a mobile check-in and data collection application which allows field service techs, surveyors, water utility workers, indeed any workers in the field to utilize mobile in their daily work routines.

MapQuest have an interesting offering. They were one of the the earliest companies to put maps on the Web. Initially focused on routing/directions, and traffic, they have broadened their offering to to include local search, marker and map overlays. In October they announce their Flash mobile API release. This is a big deal. More about Flash in a minute. But the MapQuest offering is in many ways made for mobile. Imagine being able to access routing and up to date traffic information while on the road. Look ahead and see accidents on your route and avoid them. Conduct local searches; find venues near you. Overlay KML and GeoRSS markers on the map to see points of interest (POI). Tonnes of possibilities.

Mobile Application Development MapQuest Flash API

Figure 2: MapQuest Enterprise Check-In and Data Collection App

Location Based Cross Platform Mobile Development

Objective C has become one of the most in demand programming languages. This relates to the popularity of Apple mobile devices. Most of the apps in the Apple App Store are written in Objective C. Successful mobile application development shops are filled with Objective C developers. But the game is changing. Android, and other mobile platforms are becoming increasingly more popular. Where does that leave your beautiful Objective C application? Only running on Apple products that’s where! You’ll need to rewrite it for Android, BlackBerry, Windows!

Now, thankfully there are cross platform solutions. Two of the most notable are Adobe AIR and PhoneGap. With AIR you can take your existing Flex or Flash apps and convert it to a mobile applications. Or build your AIR mobile app from scratch. But, most importantly, run the app on all mobile platforms. With PhoneGap take your Javascript application and do the same. That is one code base, which runs across mobile platforms. Simple.

Geo-Spatial Cross Platform Mobile Development

We have digressed slightly from our original topic. The future of mobile is very interesting, and filled with opportunities. Location will be at the core of many, if not most mobile applications. One day it might be pointless for companies such as us to target location based cross platform application development. But at the minute it seems to make tonnes of sense. Mobiles devices are computers with ever changing locations. Taking advantage of location to provide dynamic data – traffic ahead, what or who is near me, analysis by current location – has endless possibilities. Cross platform too. Who has the money or time to build multiple versions of the same application to run across each mobile platform? Build it once and deploy it to all would seem to be the future.

We might be wrong. But we are going to stay focused on cross platform location based mobile application solutions.

ArcGIS on IPad, Android and BlackBerry PlayBook

Saturday, August 27th, 2011


We’ve discussed in other posts some of the the challenges of building mobile application. The biggest client requirement for all apps is that they run across multiple platform; so IPad/IPhone, Android, BlackBerry etc. Historically this required either a Web based solution written in HTML5/Javascript or multiple code bases for installed apps; Objective C for Apple, Java .. the list goes on.

New developer tools releases by Adobe have made building cross platform solutions considerably easier, and potentially cheaper. Now it is possible to build one application which can be installed and run on many platforms. Just to prove the point, we built an ArcGIS application and installed it on multiple devices. The following link shows videos of the same AIR app running on the IPad, Android and BlackBerry PlayBook. So one code base running on multiple platforms:

ArcGIS running on IPad, Android and BlackBerry PlayBook

These are exciting developments. The appeal of mobile devices is considerable. Now we can more easily build cross-platform mobile applications, we can start launching new location based tools, available to all mobile users. And built at a reasonable cost.

Video: ArcGIS 2.4 on an Android SmartPhone

Wednesday, August 24th, 2011


We continue to work with the new ESRI Flex 2.4 release in conjunction with Flash Builder 4.5.1 to build mobile apps. The attraction of Mobile Air is that one code base can be installed on multiple mobile platforms. That is potentially a big cost saving. To prove a point, we built an ArcGIS IPad app, first in Flex then ported it to mobile AIR. We have now taken that code base and installed it on an Android device, in this case the Samsung Infuse. Here is a video of the application:

Video of ArcGIS 2.4 running on an Android SmartPhone

The application is now available as a free install on any Android device in the Android Store see also this link:

https://market.android.com/details?id=air.SwizTest3&feature=search_result

If you do try it, we would be interested in your feedback. Contact rory@webmapsolutions.com




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