I am working on a educational related apps. My app functionality is working well when the WIFI is connected otherwise it is getting crashed.
In my app I am connecting with the server using NSURLRequest class its working.
the download also not having any problem if the wifi is available.
problem rectification: I have to know weather the my app device is connected with external network or not.
So, how can I know my app is connected with the wifi or not?
The following link consists source code, in which it consists how to check the reachability. That means the wifi or any network is connected of not.
http://developer.apple.com/library/ios/#samplecode/Reachability/Introduction/Intro.html
Apple provides sample code called "Reachability" to detect when the network is available. That would be a good starting point, though a quick Google should locate some alternatives.
Related
I have a simple question but I don't know how to implement this. I need to create an app that can get all list of available wifi networks names and information when the user clicks on some network iPhone have to connect to this network. Can I do this? and How. Please Help me.
answer is no in some case you get list of nearer wifi but can't connect.(its also not advisable)
details :-
prefer below links to get wifi list:
How to get available wifi network name in iOS using swift
iOS Get list of all WiFi networks
some similar questions for reference:
Connect to WiFi programmatically in ios
connect to a specific wifi programmatically in ios with a given SSID and Password
Where do I find iOS Obj-C code to scan and connect to wifi (private API)
Programmatically auto-connect to WiFi iOS
The most interesting answer seems to be in the first link which points to a GitHub project: wifiAssociate. However someones in the third link explains that this doesn't work anymore with iOS8 so you might have hard time getting it running.
Furthermore the iDevice must be jailbroken.
i hope it will help you :)
I am trying to prototype a solution to a problem and am currently exploring multiple routes I could try. Is it possible for one iOS device, running a certain app, to communicate directly with another iOS device, running the same application - without the need to be on the same LAN?
Solutions I am currently investigating are using Bluetooth and ad-hoc wireless connections.
Ideally, the application when installed would ask the user for the required permissions, and then would accept and/or send data to/from another client after a handshake had happened.
My concern with Bluetooth is that 'pairing' would need to happen with every device, rather than happen in the background once the user has installed the app. I have a feeling what I am talking about isn't possible from what I've been reading elsewhere on Stackoverflow.
Take a look at Bluetooth Low Energy.
https://developer.apple.com/library/ios/#samplecode/BTLE_Transfer/Introduction/Intro.html#//apple_ref/doc/uid/DTS40012927
Here is another example,
https://github.com/KhaosT/CBPeripheralManager-Demo
You might also want to look into GameKit and peer-to-peer connectivity there.
I can't tell you anything about it, but you might try looking at iOS 7. If that's an option, I'd take a look. Can't talk about what it is because of NDA though.
Depending on what you need to communicate, you could try checking out this project, which lets you share arrays of strings between iOS devices over Bluetooth LE.
You don't need to "pair" the devices and it can still communicate while the app is in the background. SimpleShare
Hope it helps!
From the documentation of MultipeerGroupChat:
MultipeerGroupChat sample application utilizes the Multipeer Connectivity framework to enable nearby users to discover, connected, and send data between each other. This sample simulates a simple chat interface where up to 8 devices can connect with each other and send text messages or images to each other. Here you will learn how to bring up framework UI for discovery and connections and also how to monitor session state, listen for incoming data and resources, and send data and resources.
This is an excellent example at developer.apple.com here is the link
https://developer.apple.com/library/ios/samplecode/MultipeerGroupChat/Introduction/Intro.html
Also this tutorial from Ralf Ebert demonstrates how to use Multipeer Connectivity framework for peer communication should help you.
https://www.ralfebert.de/tutorials/ios-swift-multipeer-connectivity/
In my iOS app, I want to detect all available wifi networks and then choose one network form the list and connect to it. The goal is to not open the Settings built in app to connect to a wifi, but to do it all in my app.
First, is this possible? If possible, please point me to what framework(s) and methods to use.
I have looked at the Reachability example, but that doesn't work for me because, I think, all it does is monitor the network state of the device.
I also looked at the Captive Network Support framework, and used the CNCopySupportedInterfaces function:
CFArrayRef allWifiNetworks = CNCopySupportedInterfaces();
NSLog(#"%#", allWifiNetworks);
but all I am seeing is the current wifi network that the device is connected to.
Thanks
I'm pretty sure you can't do this, at least not if you want to be able to publish on the App Store.
I am looking for a way to have one iPhone app send a message to another app on a different phone (sort of like a Sender-Receiver set up). I am looking for the best possible way to do this. Does anyone have any ideas and/or tutorials?
Thanks for the help.
You should use GameKit. It is super easy to send messages between two iOS devices using it. Here's a great tutorial: Game Kit. You can also get more information about it here from the docs: About Game Kit.
You communicate by creating an ad-hoc bluetooth or local wireless network.
lmirak provided insightful info about device communication(especially about GameKit). I would like to add one more solution. You can use WiFi network to do your device communication.
See the link or download the sample application from developer.apple
The sample application named as WiTap. It demonstrates how to achieve network communication between applications. Using Bonjour, the application both advertises itself on the local network and displays a list of other instances of this application on the network.
If your app is only going to run on iOS, then you should use the fantastic MultipeerConnectivity library. https://developer.apple.com/documentation/multipeerconnectivity
If you need a solution that will work cross-platform, then one way to accomplish this is using sockets and connecting over a local network. On iOS you can use CocoaAsyncPods for sockets and NetService for discovery.
Here is a basic example app that does this: https://github.com/brendaninnis/LocalNetworkingApp
, which I explain in great detail here: http://brendaninnis.ca/connect-nearby-devices-part-1.html
I want to create an iPhone application that can call web services on a computer, and then upload those files over the iPhone 3g connection. Is there an elegant way to do this?
I tried connecting the phone to local Wifi, but connecting to Wifi disables 3g, even though the Wifi is local network only.
I assume the same problem would arise if I could network the phone with the computer via bluetooth.
Any other ideas? The purpose is to go up to a special demo PC we created, pull some data off, then upload to the Internet, all within proximity of the machine. Unfortunately, it appears that I can't use one connection for pulling data, and another for pushing.
Your assumption is correct. When connecting to both 3G and Wifi, the Wifi connection will be used. Sounds like your local network has no route to the Internet. Perhaps that could be fixed.
Apple does not prefer its iPhones to be used as routers.
If you're working on something that will not be distributed through the App Store, you may have some success looking at "tethering" applications and their source code, which can be found by some clever Googling.