I want to make an application in Flex for desktop sharing. How should I proceed?
You won't be able to access desktop via Flex, you'll have to use some server app on the user machine to simulate mouse/keyboard events.
For example, you can use any VNC server (http://www.realvnc.com/products/free/4.1/index.html) with the Flex VNC client (http://www.wizhelp.com/flashlight-vnc/).
Want to compete with Fog Creek CoPilot? ;-)
Well, I doubt that Flex running as SWF in a browser is able to do this due to sandbox limitations. Maybe, if you run Flex as AIR application, but I still doubt that AIR provides that level of access to the OS.
For Java there may be libraries that can do something like this using native interfaces.
Don't know how Copilot is doing this. I guess either using an Active X control or an native application that has to be installed.
After all I really doubt that you will be able to do this with Flex.
Related
Ok, so I have a Flex application developed using Apache FB 4.14 SDK. I got it working and approved on App Store and Play Store. Now my client is looking to port the app on Windows Phone. I tried some googling but all I found is about Astoria project, which is recently dropped by Microsoft. So My question from you folks is what is the best way to port the Flex code for Windows phone with minimal efforts?
Sadly, there is currently no easy path from Flex to Windows Phone.
The road map also states no current plans to add support: http://www.adobe.com/devnet/flashplatform/whitepapers/roadmap.html
You will have to port your game to a different engine. How much work that is, and which engine you should use, depends a lot on the nature of your app.
It also depends on if you want to make a Windows code base just for that platform, or if you want to port to something to have one code base for all mobile platforms
Can a Flex application that was designed for use on a PC be run on an iPad, iPhone, or Android-based mobile device?
Seems like a simple enough question. Visiting http://www.adobe.com/products/flex.html yields a picture of a dude running a (presumably) Flex application on an Android. So at first glance, the answer would appear to be "yes." End of story.
but yet…
There is so much (mis)information out there on various tech sites that suggest Flash-based technologies simply won't run on iOS or other mobile platforms. Why is this? Perhaps they mean to say that Flex won't run "out of the box" and requires a plugin? Or do they mean it won't run at all?
Every time I think I've reached a definitive conclusion, some post on SlashDot or CNET directly contradicts it. So what's the scoop? Can one take an existing Flex application and run it on iOS/Android? (I realize there are screen size issues to consider so the app might not run effectively. I just want to know if the runtimes are available on the mobile devices to allow the Flex app to launch at all.)
Sorry for the noob question. My background is WPF / HTML5. Adobe technologies are completely foreign to me.
I wrote a lot below if you'd like to read it enjoy, if not sorry for taking your valuable bytes :) I directly answered the questions up here first:
Why is this?
It's a confusing matter read below for the why details.
Perhaps they mean to say that Flex won't run "out of the box" and requires a plugin?
Or do they mean it won't run at all?
Using the flash builder tools (the bin folder in the SDK) you can compile for native desktop application, desktop web browsers, native iOS application, native Android application. Android with FlashPlayer plugin installed will show Flash content within the web browser, iOS will only run the ones compiled with AIR, not in the the web browser but as a native app.
Every time I think I've reached a definitive conclusion, some post on SlashDot or CNET directly contradicts it. So what's the scoop? Can one take an existing Flex application and run it on iOS/Android?
Yes, if using AIR and run as a native app on all three platforms (the desktop Flex API is for the most part a superset of the web Flex API), your other points about performance and form factor are valid and should be considered though. The nice thing is you can write your model/controller code in a common library in AS3 then write separate presentation layer interfaces that all share the library.
Here's the very long version:
Using the flash compiler results in "bytecode" in the form of a file with a swf extension using the swf format, you can read a ton more about that here:
http://www.adobe.com/devnet/swf.html
To interpret the file you need some sort of run-time similar to some degree to running WPF/XAML/C# within a .NET framework context (either desktop or using silverlight on the web). In the case of adobe technologies (rough equivalence):
AS3 = C#
MXML = XAML
Flex = WPF+WCF (client side RPC not server side)
Flash Player = Silverlight
AIR (Adobe integrated runtime) = .NET
Framework Redistributable .dll(s)/.so(s) for desktop OSes
(Read this list very loosely please, I know XAML is preserved in the MSIL or whatever which is different because MXML is compiled to AS3 and only if a debug flag is set on the compiler does it include the debugging symbols, there's certainly tons of differences but I think this is an easy and correct enough model to use)
On iOS the browser does not allow for plugins in the traditional sense of netscape browser plugins or ActiveX plugins. For this reason you'll not be able to execute a plugin ie flashplayer or silverlight in the browser. Since Adobe did release a flashplayer for Android devices that does run in the browser it will work on those devices in the browser, however they have essentially thrown in the towel for supporting this long term, as they have to support the majority mobile device platform, iOS, in order to remain relevant (this was I think more a collective throwing in of the towel by Google, device manufacturers, carriers, Microsoft, all just following suit and trying to make the best business decision, WebKit and V8 or SpiderMonkey can probably do 99% of what Flash can do and better in some cases and WebKit will hopefully not splinter and will remain open source... frameworks and the browsers just need to get fleshed out and stabilized).
If the user installs AIR (or the runtime is packaged with the app) then a Flex/Flash (that is stuff coded in AS3 and/or MXML and compiled to a swf) can be transcoded/packaged to be interpreted by the run-time for that device correctly (be it iOS or Android or whatever RIM did, I don't think they have AIR for Windows Phone 7 and Win8 on ARM won't support browser plugins either). Part of the confusion is possibly from the fact that Apple denied the distribution of Apps that were "cross-compiled" which kept AIR out of the list of options for iOS for a good year, just after Adobe started announcing it was usable for that purpose (kicking Adobe while their down). Another part of the confusion probably comes from real vids of people who have 1 hacked their device or 2 were able to get open source alternatives to the flash player run-time to work on their iOS device (gnash was one I'm aware of from some occasional Linux tinkering, also possibly FAKE vids).
You can run Flex applications on mobile devices, but you cannot simply run any Flex project.
In Flash Builder ( Flex Ide) or in Flash Professional you can create mobile projects. These projects generate native applications for iOS and Android.
Last time I tried, the result and the available components where less than what I expected. So, if you can, I'll much recommend you go for something like Appcelerator.com or similar, which turns HTML5/Js code into native apps. I tried them, worked a lot better than Flex.
Short answer: No
Long answer: You can use Adobe's tools to compile your Flash/Flex app for use as a native iOS app. So you won't be able to embed the app in a web page like you normally could with Flex, but you can build it as a native app. Note you have to have Flash Builder 4.5 to do this.
It won't run on iPhone as a .swf file, but it will run on Android based devices that have adobe flash installed. It will also run on the BB playbook, which also has flash.
Flex is a framework.( Anyway it is very beutiful one which even sometime looks like complete different language ).
As soon as you are building AIR application it can run on various platforms like : Windows, iOS, Android, upcomming TV's, PlayBook, even .. into the future ( maybe/hopefuly ) on Windows Phone, plus Linux ( which AIR future is not very clear anyway ( but hopefuly Adobe will reconsider ) ).
So - application created with Flash Builder 4.5+ would probably run everywhere as soon as it is AIR application.
The compilation methoods is really simple, and you almost simultaneously compiling for everything you wanna to.
And one of the most important things here - your applications will run, work, look and feel the same way you were designed on one device. Flex is the thing which is responsible for everything to looks beutiful on each platform it is running.
For instance i am compiling currently for Android, and without even test i can clearly say that it will looks and feel the same way under iOS and Windows, and it will.
Ive tried asking on the blackberry forums with no luck... Maybe there are some Blackberry/Adobe experts here...
Im just about to start a project using Adobe AIR/flex for the Blackberry Playbook, I have a few questions:
If I develop an application for the playbook, will the same application be able to run on a desktop? If so will there be any differences?
What is the difference between the desktop and mobile libraries? Can I only access a subset of the SDK on the mobile device compared to the desktop?
Can I create a playbook application that can call methods to a JAVA back end, located on my server?
Thanks
Phil
What’s different about developing a
mobile application versus a web or
desktop application? While many
existing Flex concepts and patterns
carry over directly to mobile
development, developers will need to
take into account the differences in
interaction patterns, screen real
estate, and performance
characteristics of mobile devices
compared to desktop computers. As a
result, we recommend using the new
mobile features in Flex to craft UIs
specific to mobile devices, while
sharing underlying model and data
access code with your desktop or web
application. Additionally, we
recommend certain best practices when
developing mobile applications with
Flex, such as using ActionScript and
FXG rather than MXML for creating item
renderers and skins.
Taken from http://labs.adobe.com/technologies/flex/mobile/faq.html#differences
As per my usual qualifying statement: I haven't tried this. Since this is of some interest to me and I've got a bit of free time I'll give making a hero app and running it as a desktop app versus as a mobile app a shot and post back here once I have it working or find a wall.
The runtime: Adobe AIR 2.5 on mobile
devices The initial versions of the
mobile development features in "Hero"
and "Burrito" are targeted at creating
standalone installed applications
using the Adobe AIR runtime for mobile
devices. By focusing on AIR, Flex can
take full advantage of the integration
AIR provides with each mobile
platform, such as the ability to
handle hardware back and menu buttons
and to access local storage.
Running on AIR Finally, it's important
to realize that in addition to all the
mobile Flex components listed above,
you can also directly take advantage
of all the APIs that are available in
AIR on mobile devices—geolocation,
accelerometer, camera integration, and
so forth. While some of these features
are not exposed as Flex components,
they are easy to access directly using
ActionScript. For more information on
developing using the APIs provided by
AIR on mobile devices, see AIR mobile
docs.
http://www.adobe.com/devnet/flex/articles/mobile_development_hero_burrito.html
Basically it's looking like the answer to all the questions is positive.
Yes and likely yes. (as they re-iterate throughout anything I've found on the topic the controls in Hero were made specifically for touch, taking into consideration the fat finger vs the mouse pointer, my guess is it will render slightly differently on the desktop and it's best to actually develop the UIs separately, although the web-services/model can be combined into a shared library/project)
You should have access to everything provided to the desktop (plus info from GPS/accelerometer etc., but obviously wouldn't get those on desktop), but don't have nearly as good a processor so what will work on the desktop may not on a lower performance computing device, but for low resource consumption tasks this shouldn't be a worry.
Yes this is a core feature of Flex, I don't see how it would be possible to make a (useful) RIA without web services. For confirmation on this one look no further than Adobe TV: http://tv.adobe.com/watch/adc-presents/flex-mobile-part-1-beginning-a-mobile-application/ <-- that app is using a web service (doesn't really matter to Flex what the underlying server technology is so long as it can make HTTP requests against it, RemoteObject/AMFService should serve your purpose)
If I develop an application for the
playbook, will the same application be
able to run on a desktop? If so will
there be any differences?
Depends. the Air file for both desktop and Playbook is exactly the same, however for Playbook development, RIM has provided an Air library so that Flex developers can take advantage of the hardware further than just the normal Air capabilities. With that said, if your application is dependent on that extra library, it will not work on desktop.
What is the difference between the
desktop and mobile libraries? Can I
only access a subset of the SDK on the
mobile device compared to the desktop?
Desktop and mobile libraries? Do you mean the Playbook Air Library or something else? See above for the latter. Comment on this if you can clarify.
Can I create a playbook application
that can call methods to a JAVA back
end, located on my server?
Yes, you can, as long as you have internet connectivity on the Playbook.
I am developing an application in flex 3 using action script 3.........
I have some range of ip address in LAN(wired or wireless both).....i want to check which all the systems available...and also want to see their shared folders.....can anyone give some code or reference in action script....
Thanks to everyone...
Actually, I don't think it's possible at all with Flex due to sandbox violation of the Flash Player and/or not supporting it.
I don't know if Air supports network access in this way. Check this out for more information on Adobe Air.
MysticEarth is right, Flex cannot access the operating system directly because of security issues that might arise.
However, you can solve it in two ways:
Adobe AIR 2.0 Command-Line Integration:
Server-side script
Adobe AIR 2.0 can now run native processes! So you could have it access your operating system, check the systems available, shared folders, etc. Here's an example on how to execute native processes with AIR 2.0
The current standard is to just use Flex and HTTP to a server side script. To do something like what you're describing, I would create a ruby/php/python script or whatever, send a restful GET HTTP request to that script (say GET /shared_folders), and have that search the OS for what it needs, and return it as XML. Then you can use Flex. If you don't want to do that, AIR 2.0 is the only option.
i am working with Flex for quite sometime. but i hadn't get any chance to even look at Adobe AIR platform. I am planning to do some personal softwares using AIR.
Provided the background that am an absolute zero in AIR, what all should I have in my system apart from Flex builder? And how fast i can learn AIR if I am pretty comfortable in Flex?
Regards,
Anoop
You can quite literally use any Flex code in AIR - the most imminent differences are the root tag of the application that is WindowApplication and a wider selection of methods available. AIR is only a platform that your Flex runs on, not an alternative or anything.
After you have created a new AIR project, you may want to check the MyTest-app.xml (or whatever the name of your app) file in the src folder. This is where, for instance, some properties of the new window created by the operating system reside.
As for tools, you'll want to install the AIR runtime if you don't have it already, but apart from that and Flex Builder you're all set!
You're in a good position to start developing AIR applications given your background in Flex. What you have to learn would depend on what you already know and the kind of application you are going to build. We can help you if you share more details about the app.
Some things you can look out for are the WindowApplication object, File systems i/o, SQLite database ops, windows/menus/task bars etc. Here's the basics for getting started with AIR app development in Flex: http://livedocs.adobe.com/flex/3/html/Part5_AIR_1.html