CODEWITHSUNDEEP
iosswift
Hobbyist
Hobbyist

Reputation: 16212

Check if device is connected to the internet in Swift2

I'm trying to find a way to check to see if my application has a connection to the internet for my application. I've tried using the various Reachability libraries you can find on GitHub which cause compiling errors for my project. (Makes other libraries not available, for some reason) and I've also tried the JustHTTP library for making a GET request to http://www.google.com but it fails every time.

I'm not exactly sure what the issue is here, but I'd like to know how some of you go about validating a connection to the internet before allowing users to use the application.

This question was marked as a duplicated and linked to a question which used the Reachability library provided by AshleyMills. Which I had stated I've attempted using these libraries already, but could not do to confliction errors in my project. The GET request code provided on this question is also out of date, and does not work on SWIFT2. This linked question also assumes that I do not need to support anything under iOS 9 which seems like a bad practice. My minimum support is iOS8

Upvotes: 1

Views: 1964

Answers (4)

Tyler Gaffaney
Tyler Gaffaney

Reputation: 76

Swift 2.x (requires Reachability)

do {
    let reachable = try Reachability.init(hostname: "https:\\www.google.com")
    if(reachable.currentReachabilityStatus == Reachability.NetworkStatus.ReachableViaWWAN){
        //Device is connected thru 3G/4G/LTE
    }else if(reachable.currentReachabilityStatus == Reachability.NetworkStatus.ReachableViaWiFi){
        //Device is connected thru WiFi
    }else{
        //Device is not connected to the internet
    }
}catch{
    //Device is not connected to the internet
}

You can get Reachability here

Upvotes: 1

Ionut
Ionut

Reputation: 394

If your request fail all the time maybe it's because you are not doing them over https but over http. It has to do with ATS on iOS 9 - this blog explains very well how to disable (if you want - not recommended) ATS http://ste.vn/2015/06/10/configuring-app-transport-security-ios-9-osx-10-11/

Upvotes: 0

cateof
cateof

Reputation: 6768

This code might help. You need the Reachability lib, this snippet can give you an example to check if your device reaches Internet via WiFi or via 4G/3G/LTE

func checkNetworkStatus() -> Bool {
    let reachability: Reachability = Reachability.reachabilityForInternetConnection()
    let networkStatus = reachability.currentReachabilityStatus().rawValue;
    var isAvailable  = false;

    switch networkStatus {
    case (NotReachable.rawValue):
        isAvailable = false;
        break;
    case (ReachableViaWiFi.rawValue):
        isAvailable = true;
        break;
    case (ReachableViaWWAN.rawValue):
        isAvailable = true;
        break;
    default:
        isAvailable = false;
        break;
    }
    return isAvailable;
}

Upvotes: 0

DJ1
DJ1

Reputation: 944

Add Reachability.swift to your project.

And try below code.

    do
    {
        let connected: Bool = try Reachability.reachabilityForInternetConnection().isReachable()

        if connected == true
        {
            print("Internet connection OK")
        }
        else
        {
            print("Internet connection FAILED")
            let alert = UIAlertView(title: "No Internet Connection", message: "Make sure your device is connected to the internet.", delegate: nil, cancelButtonTitle: "OK")
            alert.show()
        }
    }
    catch
    {
        print("Handle Exception")

    }

Upvotes: 0

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