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Closed 10 years ago.
Have any well-documented or open source projects targeted iPhone, Blackberry, and Android ? Are there other platforms which are better-suited to such an endeavor ?
Note that I am particularly asking about client-side software, not web apps, though any information about the difficulties of using web apps across multiple mobile platforms is also interesting.
The HTML5 standard has support for releasing stand-alone HTML5 apps. Essentially a HTML5 app is a bundle of HTML5, JavaScript and CSS files that will run stand-alone in the browser of the desktop or device. You can distribute them like any other program, including selling them on the iStore for the iPhone.
The support for this is patchy at the moment but is likely to improve tremendously in the next year or two.
Google for HTML5 apps for information and resources. A good introduction to HTML5 is the online book "Dive Into HTML5" by Mark Pilgrim. This is a work in progress, but sufficiently complete to be useful.
There are 2 [newish] solutions to exactly this issue:
rhomobile
and
phonegap
I think there best chance for cross-platform mobile success is the Web. Just write a very simple Web application for what you want to achieve. It should work on the Nokia S60browser, Iphone and Android.
That's already a lot of mobile devices...
Appcelerator, PhoneGap (acquired by Adobe, plus it's now standardized as Apache Cordova), Intel XDK (formerly called appMobi) and Rhodes (acquired by Motorola Solutions) are all open source and create hybrid apps (natively packed with html ui, with the possibility to add some of your native controls).
If it's a game, your only professional choice for a free engine that can be used for commercial development is Unity3D. For 2D games, cocos2d-x is also available. Additionally, Vuforia can be used for AR and LiquidFun for physics.
XMLVM (via Coke and Code) and EdgeLib currently seem to be the most mature options. EdgeLib is aimed primarily at game developers, and according to Coke and Code, the XMLVM developers are difficult to contact.
The iPhone uses Objective C, the Blackberry Java SE with RIM functionality and Android another custom version of Java. I could possibly see how you could combine the latter two but there is no functionality (without jailbreaking) of running Java applications on an iPhone.
The best bet I've seen so far is something like Qt that will run on Windows CE, almost certainly shortly Symbian, some Java platforms and the three major desktop OSs.
redfivelabs have implemented the .Net compact framework for the S60 platform
Titanium Mobile from Appcelerator looks interesting. You develop your app in HTML & Javascript and upload to their server where it is compiled into a native application of the target platform (currently iPhone & Android)
For the iPhone there's currently no such notion as Open Source as the Apple iPhone SDK NDA forbids publishing code. They also forbid posting code on any non-Apple site or even non-Apple discussion forums on iPhone development. As soon as the NDA expires (will it ever?) we'll start having Open Source iPhone apps.
Suprised MoSync hasn't been mentioned here already.
Update (2014 January - present): the project is abandoned.
I started to use a really cool cross-platform SDK called EdgeLib. It allows you to use a simple API and you can compile your projects to a variety of platforms: Windows Mobile Pocket PC, Windows Mobile Smartphone, Symbian Series 60, Series 80, Series 90, Symbian UIQ, Gamepark Holdings GP2X, Gizmondo and Windows desktop.
I know iPhone, Blackberry, and Android are not on that list but the developers mentioned that these platforms are on their roadmap.
EdgeLib looks promising and has an iPhone beta announced but not open yet.
jQuery Mobile Alpha 2 Released
Nimblekit
Sencha
Phonegap
Appcelerator
Well BlackBerrys don't really have Java SE, they have Java ME, with a lot of additional librarys provided by RIM. Same goes for Android. The only cross-platform apps you'll ever see on mobile devices are probably written in strict Java ME, which runs on most devices. However, just like JavaScript between different browser, Java ME has is quirks across different devices, so source code changes may be necessary.
I found one game engine for dat
MoMinis games are available for distribution and are supported on Android, Blackberry, Symbian and J2me devices. MoMinis games include a wide range of casual games – including arcade, puzzle, time management, strategy and brain-training mobile games.
mominis
Phonsai is new in the market for cross-platform mobile develeopment "without coding"
It is mixture of do-it-yourself mobile development and content management
You can customize all applications. No templates.
It is SaaS. Totally web based with java web start.
Work with 2000 mobile phone models.
Very simple GUI and no coding. Just copy and paste.
It has create, send and report modules.
And at last it has 4 emulators inside so that it is a WYSIWYG concept.
You can reach Phonsai at http://phonsai.com
We have a cross platform mobile development platform called RAMP. It covers both feature and smart phones from midp 1 to Android. The platform is mostly aimed at secure commercial applications but it is pluggable so you can do almost anything with it.
For more information and access to the platform have a look at:
virtual mobile tech
S60 on Symbian OS has alot of interesting projects happening relating to desktop/server languages to move applications mobile. Some interesting ones:-
Python: sourceforge
Ruby: ruby-symbian
Mozilla: mozilla
S60Webkit: S60browser
POSIX: openc_cpp
Related
This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
What work has been done on cross-platform mobile development?
Is there any mobile application development framework available by which I can develop a app that will run in all all platforms like iphone,Android,Blacberry.
Have a look to PhoneGap http://www.phonegap.com/ or Appcelerator Titanuim http://www.appcelerator.com/.
As Feanor said, web application is the only way to go if you are targetting all applications with one build. You can use many javascript libraries optimized for the mobile. Such as Sencha Touch, JQTouch and Wink Toolkit. You can use PhoneGap to wrap these web apps so you can sell on them on the respective device appstore.
Titanium does try to provide cross platform developement to some extent but if you application is a bit more than a simple app it wont be easy as even they has different api's for different platforms. The only difference is you can use javascript to develop for all the platforms in Titanium.
The main difficulty in doing a cross platform app is that, the api's and ui philisophy are different for each platform. The langauge in which development is done is not the only difference.
You can't make a Cross-Compilable application. The closest you are getting are something like Phonegap, which uses HTML5 and CC3 as a webapp.
The problem with those applications is the lack of native opportunities and you are loosing performance.
You can build HTML5 web apps for iphone,android and blackberry(http://devblog.blackberry.com/2010/03/use-html5-in-your-blackberry-web-content/)
In addition to notme's suggestion consider marmalade http://www.madewithmarmalade.com/ the clever part of marmalade is that it produces a single binary that will run on all platforms.
Be aware that there are always compromises when you use such frameworks. Many are explicit but some are hidden - like you might have trouble attracting developers to work on them.
This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
Write once deploy on Windows Mobile 6, Windows Phone 7, Android and iPhone?
Currently I have created a 2 simple apps for iphone and 1 for windows phone. When I go to promote these apps they usually....well do you have this for android or blackberry or whatever.
Do I have to rewrite my applications in every environment in order to have them compatible across all the operating systems out there? Is there tools that address this or do you guys simply recreate the app in eclipse, xcode, visual studio etc..?
Complex applications generally need to be created with the native environment.
Simple applications can be created with cross platform tools like Titanium and PhoneGap:
- http://www.appcelerator.com/
- http://www.phonegap.com/
#Fraggle (see comment)
I have quite some experience with Appcelerator Titanium. The choice for native v.s. cross-plafrom completely depends on the kind of application you need and your knowledge. General considerations:
Can the application be created with web technologies like HTML, CSS and JavaScript?
What language / environment do I know the best (native vs web technologies)?
How much time and money can I spend?
Do I really need cross-platform compatibility?
Most mobile phone applications only provide an easy interface for internet services like news updates, traffic info, social media and video. Those applications can be easily written with web technologies. Therefor most mobile applications can be written with tools like Titanium. The great thing about Titanium: Get the native experience on multiple devices while only maintaining one code-base. Cheap way of developing cross-platform applications.
Many developers use Titanium because they don't know the native language (objective-C / java), but they have extensive knowledge about web technologies. This way they can create pretty nice applications without learning new languages. Titanium is actually used for many non-cross-platform applications.
Complex graphics, device specific tools and complex interfaces still require the native environment.
Native applications will always perform better and use device specific features, but do you really need that degree of perfection? Yes, develop native applications for every device. No, simply create one cross-platform application.
Check this page to see what Titanium can do:
http://www.appcelerator.com/showcase/applications-showcase/
You may be able to use a third party tool like http://www.phonegap.com.
There are many options for cross-platform app development, but I would suggest Adobe AIR as it is also supported on the Blackberry Playbook by RIM. As far as I know, it's the only cross-platform runtime that is supported by a major platform owner.
I have also seen it do well on Android, and iOS support is also advertized.
Well there are definitely some supposed "write once, run everwhere" solutions out there. Here is one from RhoMobile which specializes in this space. But that is just what a quick Google search turned up. I haven't tried any of them.
I had an app that was developed for Android, and I ended up essentially re-writing it in Objective-C when I wanted to port it over to iPhone. It worked out pretty well and took less time than I thought (considering I hadn't done any iPhone programming prior). But now of course I have 2 code bases that I have to maintain and when I add features I'll have to do it for both the Android and iPhone version.
So having a single code base that lets me build apps for multiple platforms would be great. Do any of the tools out there work well? Not sure. Do they give you full control to make your app look and operate the way you want it, and make us of all the OS's features? Not sure.
Qt (now owned by Nokia) is another provider of a cross platform mobile framework
http://qt.nokia.com/
Even though iphone and android seem to be missing from their official Supported Platforms list I think there is an Android 2.3 release just around the corner. Qt for Iphone also seems to be in the works.
HTML5 may be one solution if the app you providing is simple enough. Google is doing it this way. Otherwise, even you have anything "cross-phone" it may still feels alien.
This question already has answers here:
Closed 12 years ago.
Possible Duplicate:
Technology to write iPhone, BlackBerry and Android phone at the same time?
Edit - guys, we need one more vote to close this. This question is a dup (read the comments)
I've heard that Apple banned such tools. Ok, so Apple lifted their ban in September. Still, the question holds - is there a sane way to develop apps to these two platforms without writing nearly everything twice?
Is there something I'm missing, or is the current state of affairs really that every company that develops a cross-platform legally has to maintain two code bases?
Apple reversed their ban in early September after receiving some pressure from the FTC and EU. However, unless you plan on using a third-party tool such as Adobe Flash Pro CS5 (I believe you can create AIR apps that will run on Android this way, as well as the much publicized iOS functionality), you'll have to maintain two codebases anyway, as Android apps are written in Java and iOS apps in Objective-C, two vastly differently languages with vastly different APIs.
You can always use standard HTML5 technologies to make a pure web app. Apple has two tracks for apps: native apps through the App Store written in Objective-C, or web apps that have only the restrictions of the underlying HTML5 technologies.
If you don't like pure web apps you can even merge the two and make a custom app that displays heavily customized web-like content in an embedded browser view (UIWebKit on iOS). Android and iOS web browsers frameworks are from WebKit and very close in features/appearance/conformance.
Instead of starting from a viewpoint of "I can't do X on Apple's closed iOS" start with "Can I do this in any supported application technology, even if its web-based or a web app hybrid, available across all platforms?"
I've done some research on this recently and have found a few companies that can to do this for you.
Appcelerator Titanium Mobile. They make a product that allows you to write your code in Javascript. I've found that the business logic, like networking, files, etc are write once, but the UI has quite a bit of if(android) else \iphone logic to get right. Apps will look native.
FeedHenry. They are more of a HTML based solution, but have a broader support of devices. More than just iphone and android. The sdk is still pretty early, and work can only be done in their special ide that is web based.
Phonegap. A javascript/css/html based framework that targets the iPhone, Android, and the Blackberry.
There are plusses and minuses to all of the solutions. Depending on your app's complexity, it may be a good decision to pick a platform like those to develop on. Coding an app could be much faster if the features they support are right for your app. Right now, it seems that they are all in early release phases and don't support a full toolkit that a developer would be used to, like a debugger, full IDE support, etc. Also, many of them build to a lowest common feature set, so you may not get all of the new release features as they come out, you would have to wait for a particular version of the platform to be released in order to have them.
XMLVM: Android to iPhone
XMLVM can translate your Android code to Objective-C for iPhone. But as what I know you still need a Mac to compile the iPhone application.
Android has the NDK (native dev kit) to allow C and C++ code to be included in APKGs and called from Java via the JNI. Apple's toolchain will also deal with both; the code that will be different will be the platform interface code, mostly in Java on Android and ObjC on iOS.
This is only useful when the bulk of your application is in C or C++.
An alternate would be to go with MonoTouch and the upcoming MonoDroid, if everything works out you could basically code C# on all platforms including of course Win7 Mob.
It looks promising but haven't tried it myself yet.
In September, Apple lifted some of the restrictions in the iOS license that had made it difficult to do cross-platform development. See this press release. I'm not familiar with the details of the current license, but you can get a copy through their developer program.
Another possibility that would be the Rhodes framework, if you like MVC, ORM, and Ruby.
take a look at the System.getProperty() values with android the vendor shows as The Android Project. I haven't looked at the iPhone or the IPad since I don't have one but hopefully they have something changed for their's too. But this will only work with java that I know of.
Do any libraries or other development resources exist that can help reduce the effort involved in porting applications between various mobile platforms? In particular, I am interested in supporting iPhone, Android, and Windows Phone 7. Some areas of concern include UI, client-server communication, and hardware support (e.g., camera, GPS, etc).
MonoTouch allows you to write iPhone apps using .NET (C#). In the near future, an Android version will also be available (MonoDroid)
As for Windows Mobile, I'd forget about that and concentrate on Windows Phone 7, which will use Silverlight for apps. And of course, Silverlight is .NET as well, so you can share all your business logic between Silverlight, MonoTouch (iPhone) and MonoDroid (Android)
There is actually a really good tool out there that allows you to write apps for android and iphone in javascrpit, HTML and CSS. Then the program will port the app for either iphone or android, building the objective C code (iphone) or java code (android) as it compiles. Later revisions of the program are said to include the ability to port to palm and blackberry as well. And the bonus... free and open-source!!
PhoneGap supports Android, Blackberry, and iPhone formally. They tweeted that it works on Windows Phone 7, but it's a bit early to feel certain of that, since that OS has not shipped yet. Has reasonable but far from complete hardware support.
Well it appears that iSpectrum seems to be what you're looking for.
You'll find a video on their website homepage ( http://www.flexycore.com/ ) which shows a 3D android game they ported in only 2 days!
All mobile platforms I've encountered so far have C89-compatible compilers, so that is what you want to use for the core application logic if you have high portability requirements.
The product I'm working on can currently be built and run on Android, iPhone, Symbian, Windows Mobile and some other proprietary platforms (Nintendo handhelds) and legacy platforms (PalmOS, OSE) as well as "real" machines (Linux and Solaris servers).
Of course the UI code has to be written specifically for each platform, but the core is built from the same source code for all targets.
As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance.
Closed 11 years ago.
I have very little idea about mobile platforms, though I am interested to program for them.
Would you please compare J2ME VS Android VS iPhone VS Symbian VS Windows CE.
I would like to know:
which one is better
which one should I choose and why
if there is any VM technology to test the programs
is there any IDE, debugging facilities?
Personally, I would like to code for open source, but any suggestions are welcome. I have preliminary knowledge on Java. I would also like to know, if there is anything else that you can recommend.
There's several of these questions floating around on SO already... the most popular seems to be this one: what mobile platform should I start learning?
Quicky from the accepted answer over there (I edited a bit):
I think 3-4 platform have a future. But depends what platform do you like and how you like freedom in distribute your applications :)
Windows Mobile
C++ or .NET
free distribution, just like normal applications or through market
You need a Windows PC to develop
proprietary
Android
Java
Open Source
through Android Market ($25 one-time fees) or like normal applications
The platform is completely open source
iPhone
Objective-C or Java (Developing iPhone Applications using Java)
through iPhone Market ($99/year fees)
You need Mac (Mac OS) for development
proprietary
Java
J2ME or JavaFX
largely open source
My personal thoughts are: Symbian's dead; Windows Mobile will die, but take a long time; Android will become the standard in the next few years; iPhone will remain trendy in coming years, but NOT take be the biggest player; Pre/WebOS will maintain a niche market, but not be wildly sucessfull, Blackberry will decline, but still be around forever. I'd probably put my time/money into Android or iPhone at this point.
You can find everything about J2ME VS Android VS iPhone VS Symbian VS Windows CE in the below survey image:
Admittedly I'm biased, but points in favor of Symbian are:
Is open source
Has by far the largest marketshare (45% or so) of smartphones
Runs on cheaper hardware than Android and iPhone (means volumes will go up significantly faster)
Runs Python, Ruby, Java and Web Runtime Widgets
From Symbian^4 will have a complete Qt stack.
For maximum portability among smartphones, I recommend Javascript, HTML, CSS. It's the only way to run on certain systems you don't mention (such as Palm Pre and Google's ChromeOS), and (with suitable restraint in using advanced features, if you can) it's the one and only way to write your app ONCE and have it run on an incredible variety of platforms. Especially with some server-side support (unless your volumes are huge you can get that for free with Google's App Engine), it's quite a powerful and effective solution for many needs.
Otherwise, you need Objective C and Cocoa for iPhone (excellent technologies, really well supported by Apple esp. if you have a Mac, but won't help for other smartphones AND nothing else besides ObjC or JS will run on the iPhone), etc, etc.
I think iPhone is ruling the hardware and sotfware development,android is interesting but too new,symbiam is dying because Nokia,windows Will survive cause of money with bull€&€& but they will. iPhone is too restrictive and damn expensive but is thecoolest now.Finally i think that for the NeXT 2 years iPhone will reign.
Windows CE has tottaly caputed OS market for rugged devices, companys like motorola, intermec, Dolphin (Honeywell).
Plus Windows CE and Windows Mobile has an enterprise grade database platform.
When comes to spending money, companys buy $1000+ plus devices and build real applications on them.... I see Windows CE being around for a long time and the chart above only show smartphones and no other device, Android and CE can be on in TV's, running gaming system or anything eles.
A detailed market research about Android and iPhone here
and smart phone market share in first quarter of 2010:
(source: nielsen.com)
Take a look at PhoneGap and Appcelerator Titanium if you want to develop for multiple mobile platforms. They both allow you to write programs that run on both Android and iPhone, and PhoneGap also has BlackBerry support. PhoneGap programs are allowed on the Apple App Store, but I'm not sure about Appcelerator Titanium.
My response may be late, but here goes:
I've been exposed via work and academia to both the iPhone and Android platforms for the last year. I find two glaring flaws with both platforms that will limit, if not prohibit, viable entry into the biggest mobile market -- the business enterprise. Oddly enough, the flaws are opposite sides of the same issue: enterprise compatibility.
iPhone - Because Apple exerts ultimate control over what app makes it to the App Store, AND the app must be available to anyone once approved, IMO, iPhones will never become the defacto business mobile device. I cannot envision a business that would willingly expose it's source code to Apple's scrutiny. Nor would I want my "internal use only" enterprise app available for download by anyone in the world. I find that scenario laughable.
Android - OTOH, because Google (and now Oracle, too) exert no control whatsoever on app development, anyone who wants to, regardless of ability, can slap any old app on the App Market whether it works or not. I would not want my app lost in the confusing mix of slap-dash, teenage tinkering, malicious mongering developers. Would you?
However, the tie goes to Android because developers are not compelled to submit their apps to public access in order for them to be distributed.
Any other platform is either niche or passe'.
That's my take on the issue.
RE: Is there any IDE, debugging facilities?
For Android development the best option is to use MOTODEV Studio, based on Eclipse platform. Is an integrated development environment with Eclipse 3.5 and Android Development Tools (ADT) plus automatic download and configuration of the latest Android SDK. You can also test applications on an integrated Android emulator within it.
Java ME has the Java Verified Program and the Specs all come from the Java Community Process (JCP) far more advanced and vendor neutral than the others.
You can also take a look at iSpectrum . With this you can code in Java for iPhone, so you can reuse a lot of your code produced for Android and/or J2ME, for example.
Android would rule the market few years down the line, just because its an open source. No person would want to spend much on apps in future . Iphone till date survives because its trendy to use Iphone(as they say!) because of its UI and people are willing to spend on Iphone apps, so i must say its not far to see a mobile platform(Android) which is trendy, easy to use, free et al.