mobile j2me map viewer library - java-me

Is there any open source gis library for mobile devices to work on J2ME? I need to create simple gis application on mobile device and to be apple to retrieve and enter data.

If GPL license is acceptable for You, then take a look at Mapping library from Nutiteq

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How to use(or convert) this NATIVE BLE DFU library for Xamarin?

I'm making app with using Xamarin.forms (PCL project).
I'm making app like FITBIT and its wearable device.
I'm using nrf51822 MCU from Nordic.
Someone has done lots of work for syncing with ble device for Xamarin.Forms and fortunately it's working great.
Now, I need to use DFU OTA library to support firmware-update for users.
Nordic provided great examples and source code.
dfu lib for iOS : https://github.com/NordicSemiconductor/IOS-DFU-Library
full project(iOS) : https://github.com/NordicSemiconductor/IOS-nRF-Toolbox
dfu lib for Android : https://github.com/NordicSemiconductor/Android-DFU-Library
And How can I convert this library for using it on Xamarin?
What documents or technique should I look?
Any tips will help me. (It might be lots of pain?)
Thanks.
Nordic says they didn't even start to look Xamarin, So there are only three guys(including me) are looking for these binding project.
discusion here : https://forums.xamarin.com/discussion/comment/214516
you can read this documentation Xamarin.Android supports the use of native libraries via the standard PInvoke mechanism. You can also bundle additional native libraries which are not part of the OS into your .apk.
Android.
https://developer.xamarin.com/guides/android/advanced_topics/using_native_libraries/
the same for
iOS.
https://developer.xamarin.com/guides/ios/advanced_topics/native_interop/
Regards. I hope this help you.

How to develop for Samsung, Panasonic and LG Smart tv app?

I need to code the front-end development for a smart tv application that will work for Samsung, LG and Panasonic.
I read that Samsung has its own SDK for Eclipse and an emulator but I am not sure if developing it with Samsung SDK will work on the other two platforms, do you know if there is a way to develop it that works for all three platforms?
There is platform difference for all the three platforms but there is framework called the TAL framework with which you can create Universal application.
Refer to BBC talframework http://fmtvp.github.io/tal/getting-started/introducing-tal.html
but i doubt that samsung QA team may not allow it.
Mostly smart tv app are based on HTML5, Jquery, so you can build same interface for all the apps and can modify jquery according to platform(LG, Samsung, etc).
you can use this TV SDK http://www.inio.tv/ (I am member of team who develop this...) or some other multiplatform TV framework.
If you have some questions I can answer

can we build for Symbian^3 same code done in s60 3rd edition using lwuit

I have made application in j2me using lwuit and successfully built on S60 3d edition FP2, now to make wide compatibility i want to make build for Symbian^3, so is it possible?
Yeah its possible. Because LWUIT supports both touch and non touch mobiles and no need to change the code for this. AFAIK you have to check following steps,
Resolution: Because resolution of symbian s60 3rd edition not more than 240x320 or 320x240. But symbian^3 smartphone having 640x360 or 360x640.
MenuBar: Look on this blog
Drag and Drop: You can enable drag and drop the components If you needs.
Just test the LWUITDemo application from repository on symbian s60 3rd editon and symbian^3 mobiles. Then you can find the what are all the changes have to do. Also look on this wiki information about Symbian.
You should be able to use the same jar file on the Symbian^3 devices, unless some of the APIs have changed. At least this was true for S60 5th edition, I've never used j2me on Symbian^3 myself.

Save Call on Java Mobile / Phone to mp3 or any Audio format / file

I want to Save Call on Java Mobile / Phone to mp3 or any Audio format / file .
How should I go ahead with.
I am quite well versed with Core Java.
I found apps supporting above mentioned functionality in symbian Phones only but NOT in Java phones whose MIDP version is 2.1 and above.
Thanks for your Idea ( obviously practical one's ! )
or
sharing some links relevant to this
or some sort of pseudo-code in java for this.
I want solution for Java Phones with MIDP 2.1 & above.Please don't recommend symbian or other such things.
If you are willing to record incoming call using j2me , than unfortunately it is not possible.
with Java ME API's in the currently available Nokia phones its not possible, But you can try with Symbian C++.
j2me security will not allow to do this
you can do it with symbian.
I think nobody developed a call recorder in Java platform. All that you can do to record is to call divert to a land line which is connected to computer which can record calls.
Something for your reference (these can't provide you with Java phone call recording but can guide you , why it can't be with Java & S60 would be better(&only) option. )
Java Voice Recorder ported from E398
Need to develop a call recorder
and if change your mind from Java to Symbain then here's a code which you can have a look at.
Try Symbian!

how to send files to mobile phone using Bluetooth?

how to send files to mobile phone from pc using Bluetooth. What are the libraries i need to do it.
You need JSR-82 implementation library, find a free one here www.javabluetooth.org
There aren’t many JSR-82 implementations available for the desktop environment. Most of them are commercial but I was able to find the open source version from www.javabluetooth.org.
http://www.substanceofcode.com/2008/06/20/sending-files-to-mobile-phone-using-bluetooth-and-obex/
Bluecove http://bluecove.org/ would be annother alternative. I use the "latest" Snapshot and it works well.

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