I have made some applications on J2ME using LWUIT, CLDC 1.1, MIDP 2.0 and they are working great on Nokia handsets.
But when I tried to install these applications on Huawei G7206 (JBlend) some of the applications gives error (NOT SUPPORTED) and some crashes without displaying anything.
I have tested an application without LWUIT and it worked.
My question is,
what is the issue?
Either JBlend does not support LWUIT? or I have to downgrade my applications (I mean to remove some features)?
Does anyone know the limitations to work with JBlend?
Have you tested your applications on other devices?
Confirm that your jad doesn't include any other hidden requirements, jblend generally works with LWUIT but some VM's don't handle the full LWUIT properly and require an obfuscated application or similar hacks.
Whenever we use LWUIT in application the size of the application increase because of the jar file which we add in it. By obfuscation we can reduce the size of .jar file. And can become able to run in device.
Please try of obfuscate the application. You might get the solution of your problem
Related
I want to write a tiny "hello world" J2ME MIDlet. In a sample like this one, classes in javax.microedition.lcdui.* are used for display output. When I try to compile it in Eclipse, I get the error,
The import javax.microedition.lcdui cannot be resolved
I've installed JME SDK 3.4, and I'm able to run MIDlets that don't import javax.microedition.lcdui.*. I read somewhere that lcdui can be obtained from the wireless toolkit; and Oracle says that the wireless toolkit has been integrated into JME SDK as of 3.0+.
So why can't Eclipse find it?
OK, I think I know the answer now.
I got back to the JME SDK 3.4 documentation page on Using Sample projects, and created and ran an instance of UIDemo. It uses lcdui classes, but it runs flawlessly - no errors about inability to resolve javax.microedition.lcdui.*.
The difference appears to be that the working sample uses different libraries than the one I tried at first. The first one uses org.elipse.mtj.JavaMEContainer/Oracle Java(TM) Platform Micro Edition SDK 3.4/IMPNGDevice1,
while the one that works uses org.elipse.mtj.JavaMEContainer/Oracle Java(TM) Platform Micro Edition SDK 3.4/JavaMEPhone1. They contain different sets of jars, e.g. the working one contains midp_2.1.jar, while the earlier one has impng_1.0.jar.
A follow-up question might be, why doesn't IMP-NG have lcdui in it? Well, those who pay attention to what they're doing will have read that
This JSR [for IMP-NG] will define a J2ME profile targeting embedded networked devices that wish to support a Java runtime environment similar to the Mobile Information Device Profile (MIDP) version 2.0, but that do not provide the graphical display capabilities required by MIDP 2.0.
The Information Module Profile - Next Generation (IMP-NG) will be a strict subset of MIDP 2.0, where at least the APIs relating to GUI functionality (the LCDUI) are removed. Functionality not already present in MIDP 2.0 is not anticipated or desired. "
The next question might be, why did I end up selecting IMP-NG when I was going through the tutorial... when I really do want a MIDlet that does something graphically? But I'm not sure I care, now that it's working.
The new me sdk 8.2, as I understood after browsing all class and in packages, does not provides any class to develop user interface. not like sdk 3.4, that have many graphical components.
I am trying to generate a netbeans project with Lwuit editor. But gets this error message that some library are missing and that WTK 2.5.2 CLDCC Cannot be found. any idea on how to fix this
http://www.oracle.com/technetwork/java/javame/javamobile/download/lwuit/index.html
Is the location of the library that you must download.
Additionally you may need the wireless toolkit though I am not sure why.
http://www.oracle.com/technetwork/java/download-135801.html
If you are writing for mobile devices I strongly recommend that you check out Codename One which is the open source product developed by the original designers at Sun of lwuit. http://www.codenameone.com/
I have build an application that using LWUIT for UI and bouncycastle for Hashing and Encryption, and every thing is working fine in the emulator but When I try to test it on real device
1- the application not installed correctly because of bouncycastle library need a high obfuscation level to run on the device without any problem
2- so I have set the obfuscation to high level but that made a lot of problem with LWUIT that can't build in the application
3- so I have decreased the level of obfuscation to 8 and the project build successfully but the UI now is not working probably as no button action applied and so on
4- also the application is not installed successfully because of bouncycastle
I need an urgent help please, what can I do to solve this problem
I have successfully used bouncy castle for a lwuit application, so i do not believe that this should be a problem, but if you are having problems with including the bouncycastle javaME jar, then i suggest you download the source files and copy the required classes only into your own code base, with the appropriate package name along with all dependencies.
Anyone have the idea of which Javascript framework is much supported by the cross platform
for PhoneGap App development.
I search on the web and find the JQuery Mobile framework but it is not much compatible with the android it shows problem with UI while it is much supported by the iPhone.
There is any JSframwork supported by the all max platform?
Please Help..
I personally use DataZombie's fork of jQTouch - https://github.com/DataZombies/jQTouch
The transitions and scrolling all work fine on Android unlike some of the others.
Android doesn't have a built-in theme for Android the way it does for iOS, but I was able to put one together for my app fairly easily (it's just CSS and a few images). When it is more complete I will probably release it, but you should be able to do your own or use the jet one (that looks fairly Android-ish).
None of the frameworks really looks like a proper native Android app out of the box as far as I have been able to tell. Nearly all of them seem to have a very iOS-centric navigation system (back buttons in nab bars, etc) that just don't exist in native Android apps. One of the first things I did in my theme was to get rid of any back buttons thus relying on the hardware back button for backward navigation (more like what Android users expect).
I want to run my c# application with OS Linux using Mono. I am new to this cross platform migration? Please tell the procedure for doing that?
Thanks & Regards.
It very much depends on what type of application it is. For a console or WinForms app, it may be simple. Mono doesn't support WPF.
Well, the first think you'll need to do is install Mono of course. Then you probably want to run MoMA to determine your application's compatibility. There's a whole separate page about porting WinForms apps.
If all is well, you should just be able to run your application using:
mono MyApplication.exe
after copying the binaries over.
If your application is actually a web service or web application, you'll want to think about the various hosting options.
I suspect you'll want to read a lot of the pages on the Mono Start Page.
Check if your application is 100% compatible with Mono Framework using MoMA.
Remove or replace those unimplemented parts with Mono's implementation or third party libraries that works with Mono. Or if you think it should work fine, just execute it with Mono Framework 2.8 or higher. Better go with 2.10 which is default's profile is on 4.0.
There is an IDE, MonoDevelop that supports Web and Desktop applications. Open the project files (monodevelop supports visual studio project files) from monodevelop, compile and run.
you can browse mono website here, where you can find which features are supported and which are not supported and why.