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I'm developing an iOS application for a bar, it will be used by the waitress, when the an order it's completed the application should be able to print the receipt using a fiscal printer.
I've never done something like this. does any of you have any experience?
would you be able to suggest a specific device that allow an easy integration with an iOS app? are there any standard protocol?
You can use two SDKs distributed by printers manufacturers that work great with the iPhone:
http://www.crs-usa.com/softsnbc.asp - this one works with SNBC BTP models, and the printer should have Wi-Fi or a Ethernet cable to connect to the same network.
http://www.starmicronics.com/ios-android.htm - this one works with Star printers (the same ones Square uses)
In both cases, the SDK needs to get connected to the printer IP, and this can be quite tricky/complicated in the beggining.
But I would start deciding which printer to buy/support, and then start implementing it.
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Assume you have an iOS app that implements WebRTC protocols and P2P communication (i.e. signaling server, STUN/TURN, data channels are implemented). Let's say the app makes is for a collaborative document.
I would like to simulate the following scenario to run some tests:
30 people using 30 different devices make some non-conflicting edits on a shared document. I want to test the latency it takes for a device to receive the changes from the other devices (latency of p2p connection) and correctness (are all the changes received?).
How can I set this up in an automated test? My goal is to measure the latency and correctness in an automated way.
When I posted this first it got closed due to being "opinion based". I am asking "how to do this?". I know latency is not in my control - I just want to be able to measure this via automated testing. The goal here is to set up an automated test, and my question is how to do this. Thanks!
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I want to make Wi-Fi file sharing in my app, that UIViewController will have http address which user will can to write in desktop browser and user will can pass data to application over Wi-Fi. How can I make it? What are any libraries for it? I use Swift 2.0 and Xcode 7. Like this
This is a broad question, here as a broad answer.
You could try using the Multipeer Connectivity Framework that was introduced in iOS7.
This essentially wraps zero-configuration networking so you don't need to worry about IP addresses.
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I need to print some kind of black-and-white receipts at an office. No human interaction should be required. Print jobs will come from my webserver.
I would love to have a printer available by a simple web-API.
Google-cloud-print comes to mind. But it's in Beta and I've been testing it with my own printer and it doens't work all the time.
I could have a small windows PC hooked up to a printer, but what kind of software does it need to run to listen for new printjobs and print them out?
How about some kind of Arduino-wifi-printer solution?
Google Cloud Print has worked for me in the past. Also, newer HP printers supporting ePrint can be setup with an email address that you can send print jobs directly to
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I am trying to implement Bluetooth low energy in one of my projects, using an iPhone and a HM-0 BLE module.
My question: is it possible to read service UUIDs (or even their characteristics) after scanning, without having to actually connect to the peripheral?
The point is whether or not it is possible to put the list of Service UUIDs and the value of their characteristics on the advertising data.
The way to achieve what you want is to add the available services to the advert report. This functionality is module-dependent and there are many modules that do not allow you to do that. I had a quick look at the AT commands of the HM-10 and it seems that this module is one of them.
Please note that with BLE you can add whatever you want to the advert report, and program your iPhone to read the data accordingly. However, If you want full-fledged BLE communication (i.e. reading characteristic values, etc) then your best option is to connect to the device.
For more information, take a look at these useful links:
http://letsmakerobots.com/node/38009
http://letsmakerobots.com/node/39795
http://www.jnhuamao.cn/download_rom_en.asp?id=66
I hope that this helps.
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I want to creat an app that talks with other devices.
The app is for IOS 5 and up using Objective-C
I want to be able to send data between 2 IOS devices directly (not with a server or somthing).
How can I acomplish this?
Some say Bluetooth but it is very general..
Some say GameKit but I could not find any tutorial for GameKit since IOS 3 (and even then I found only 1 guide).
Can you help me understand which technology to use and maybe direct me to tutorials that explain all of it?
The data I want to send is short string \ 2 digits int's every couple of minutes.
Thanks,
Gal
This might be something for you:
http://mobile.tutsplus.com/tutorials/iphone/bluetooth-connectivity-with-gamekit/
As you mentioned. Using bluetooth with GameKit framework is the way to go.
You can use Peer-To-Peer setup and that means no server is required.