I am currently developing an application using LWUIT and initial socket connection is working fine but after a while our application gets disconnected and it cant reconnect to socket? We have to shut down our application and re-open for it to reconnect.
This is happening for the Nokia N8 Symbian^3 OS. we have actuall device
Is there any SDK whereby you can test and via data cable on actual device like you do on all other OS's (BB, windows, Apple)? We have added a log into our application and it is not picking up anything significant?
The Qt SDK lets you develop and test directly on your phone. There is a simple guide for this here:
http://wiki.forum.nokia.com/index.php/Using_Qt_Creator_with_Symbian
This won't help you with testing your LWUIT application, however, so I'm not sure if this answers your question?
Related
In an automated test environment, I have to use 7.5GB of test data, that consists of 170k+ files. Simply copying it with the bundle is too slow (40+ minutes), thus I would like to incrementally sync the contents of the test data folder between the iOS device and the mac. Eg. using the iOS device as a USB drive, and use rsync to sync the contents, but any ideas are welcome. No, I can't jailbreak the device. Basically I want to keep two folders synchronized between an iOS test suite and a mac. Any ideas?
There is a way to do that using USB without jailbreaking your iOS device. The whole setup works via a UNIX socket called usbmuxd that Apple uses to communicate between a USB iOS device and e.g. Xcode or iTunes on a Mac. The iOS device basically opens a TCP server and the OSX app connects to the UNIX socket from which it can obtain a TCP connection to server on the iOS device. After that you can just write and read data over USB using streams at 480MBits.
There are some frameworks under MIT license with example apps for OSX and iOS that allow you to use this mechanism in your own apps:
https://github.com/jensmeder/DarkLightning
https://github.com/rsms/peertalk
This mechanism is App Store compliant in case u need to publish your app later. One popular example is an app called Duet Display that allows you to use your iPad as a second screen via USB.
Hope that helps.
I recently developed an application for a client, an app iOS, Android and windows, the mobile app acts as a controller and launches certain events on the windows application. The Windows application also shares data at random (not known to the mobile app) moments. The communication was done by TCP. And works great.
The client now wants it for bluetooth. Between Android and Windows, it's not been a problem and has been done, and works well. But iOS is sadly not the same story... The use of Bluetooth low energy seems to complicate things.
I've hunted high and low on google to find anything on communication between a .net application and a Swift application, to no avail. This surprises me that no one talks of a bluetooth communication between Windows and iOS.
My question is, very simply. Is it possible? I know very little about bluetooth and I've tried researching devices and all I find is a BeeWi device that's in our office, not my computer (I maybe need to launch something on computer first? The devices are paired)
My computer has a Bluetooth 4.0 dongle and the BLE emulator is present in the Device manager.
If this isn' possible, tell me know and put me out of my misery, otherwise give me hope!
Any additional advice is warmly welcome - Thank you all !
Beau Carrel
Windows has support for being a BLE client. Just Google it and you'll find many examples, such as https://developer.microsoft.com/en-us/windows/iot/Samples/BLEGatt2.
You need to set up iOS to be an advertising peripheral.
I am working on developing an enterprise application for ios 7 that needs to work offline and then sync with a desktop client (that I also need to write) for data transfer.
My company does not allow wireless or cell data in this area, and would strongly prefer to not use iTunes either.
The question is, how do you transfer data from an iPad over the usb cable to a custom windows program, without iTunes.
The simplest answer would be: iExplorer (http://www.macroplant.com/iexplorer/) plus some kind of a script to automate the data sync.
Otherwise, you can use the ExternalAccessory framework to communicate with the desktop via a USB tether. This would necessitate a desktop client running simultaneously to communicate with the device.
peertalk (https://github.com/rsms/peertalk) does what you want, however the computer side library is only for mac os. Maybe you can port the protocol to windows by looking at that (the license is BSD)
Edit: this guy managed to have it run under linux. It sits on usbmuxd, which also has a windows port, so it shouldn't be impossible.
I've been banging my head against this for the last week or so. I've already gone through the following resources:
StackOverflow: Bonjour over bluetooth WITHOUT Gamekit ? (3844189)
StackOverflow: How does Bonjour Over Bluetooth Work (3350094)
StackOverflow: Using iOS GameKit's “Bluetooth Bonjour” with other platforms (8070998)
Technical Q&A QA1753 -- Apple Developer
WiTap sample application
SRVResolver sample application
DNSSDObjects sample application
I'm using Mac OS 10.7, Xcode 4.5, an iPhone 4 with iOS 6, and an iPad 1 with iOS 5.1.1.
My problem is this: I am modifying an application that currently uses GameKit's peer picker to connect between an iPad and a iP{hone|od touch}. We want to modify this to use Bonjour over Bluetooth instead because we've had issues with reconnecting the devices using Gamekit if the connection is lost. I've used dns_sd.h API to some success and have gotten the service to advertise and resolve over wifi, but even though I am passing kDNSServiceFlagsIncludeP2P I am not getting any success over bluetooth.
I thought possibly Bluetooth Bonjour need a PAN established between devices already, but even pairing the iPad to the iMac and browsing for DNS-SD services gives me nothing...and the iPhone won't pair to the iPad anyway.
I just finished solving this in my own app in the last 24 hours. I used the core classes from the OS X sample app DNSSDObjects. I only had to change three lines of code to add support for bluetooth. This works great in my iOS app.
In DNSSDBrowser.m, the call to DNSServiceBrowse needs to have kDNSServiceFlagsIncludeP2P passed in for the 2nd parameter.
In DNSSDRegister.m, the call to DNSServiceRegister needs the same change.
In DNSSDService.m, the call to DNSServiceResolve also needs the same change.
If you want to limit yourself to just bluetooth, and not WiFi, then the same three lines of code should be updated so the 3rd parameter is kDNSServiceInterfaceIndexP2P instead of kDNSServiceInterfaceIndexAny.
Indeed, it looks like the kDNSServiceInterfaceIndexP2P flag won't work on OSX.
If you run the code on IOS, you'll notice that Bonjour will publish two IP Adresses: one for your local WiFi network, and an 169.xx.xx.xx adress for Bluetooth.
The same code on OSX never publishes the 169.xx.xx.xx adress, so it's only found over WiFi.
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How can I make a Bluetooth Mac app that connects with an iOS app and sends messages ?
Or an iOS app that connects with a Mac app via a local WiFi network ?
NOTE: this answer is now outdated as with the introduction of CoreBluetooth (Bluetooth LE v4) since iOS6 and OSX 10.7 any iOS device is open to any kind of communication with any other BLE compatible device, either a Mac or PC or external hardware.
The answer below is still valid if you cannot support BLE, due to old hw or specific requirements (e.g. required bandwidth)
As far as I know, this is almost impossible. Bluetooth connection between iOS devices is well supported with the GameKit framework but there is no support for connection with other OSes, OSX included. The only connection between Mac and iPHone I have ever seen is with the hotspot feature (when it works).
Consider for example the Keynote Remote app. This app allows you to control a Keynote presentation using your iPhone as a remote. It allows this control when the two devices are Keynote-paired on the WiFi, but this connection is not allowed using Bluetooth, while with Bluetooth you can control a Keynote presentation between two iOS devices. And you can find this statement in Apple tech note 2152:
An important consequence of the first point is that Bluetooth peer-to-peer networking can only be used to communicate between iOS devices; you can't use it, for example, to communicate between an iOS device and a computer running Mac OS X.
As far as the WiFi question (I forgot to reply to it in my first question) essentially you to kind of problems to solve: discoverability and data transfer. In order to determine if two devices are in the same network, you can use the Bonjour protocol. Essentially one of the machines publish itself as service-provider for a specific service (you can create your own service: e.g. "_mytype._myprotocol") and the would-be client will search for a server. Besides Bonjour takes care of other things like addressing and DNS without the two apps to know the details of the local network they are in. This is explained in Apple docs here: http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/NetServices/Articles/about.html
Note that Bonjour is at the base of features like AirPlay (Apple TV), AirPrint and probably also AirDrop but it is supported by a lot of devices, e.g. some NAS. In the SampleCodes section of the Apple developers site you will find a great example, called "BonjourWeb" that shows how service discovery works. You can easily try it in your iPhone simulator or device and if you have some Bonjour-enabled device you will see it in the list.
The second problem of course is then real data communication between the two devices, is up to you to define a custom client/server or use a standard web-server based approach. This depends on the application and the data flow. The first approach is better as it is highly customized, you must study the NetworkStreams concepts and check out the SimpleNetworkStreams code in the apple library (this is a simple communication app between a Mac and an iPhone; not always working but it is a good starting point)