Basic Networking in Swift/iOS (Simple HTTP GET Request)

BasicNetworking.swift

// This gist is comprised of two files demonstrating how to do simple networking
// in swift using the HTTP GET method. The first file is ViewController.swift,
// and the other is Info.plist. The Info.plist was added to this gist because
// it must be modified in order to use HTTP instead of the more secure HTTPS.





//
//  ViewController.swift
//  GetRequest
//
//  Created by Christopher Pedersen on 8/3/18.
//  Copyright © 2018 Christopher Pedersen. All rights reserved.
//

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    // REFERENCE (UIAlertViewController): https://developer.apple.com/documentation/uikit/uialertcontroller
    func displayDialog(_ dialogTitle: String, _ dialogMessage: String) {
        let alert = UIAlertController(title: dialogTitle, message: dialogMessage, preferredStyle: .alert)
        alert.addAction(UIAlertAction(title: NSLocalizedString("OK", comment: "Default action"), style: .default, handler: { _ in
            NSLog("The \"OK\" alert occured.")
        }))
        self.present(alert, animated: true, completion: nil)
        
    }
    
    // SWIFT NETWORKING REFERENCE: https://digitalleaves.com/complete-guide-networking-in-swift/
    @IBAction func onMainButtonClick(_ sender: Any) {
        let httpURL = URL(string: "http://flashtri.com/get.php")!
        let httpTask = URLSession.shared.dataTask(with: httpURL) {
            (data, response, error) in
            guard let _ = data, error == nil else {
                DispatchQueue.main.async(execute: {
                    print("ERROR: PC LOAD LETTER") })
                return
            }
            let results = String(data: data!, encoding: String.Encoding.utf8) ?? "ERROR: PC LOAD LETTER"
            DispatchQueue.main.async(execute: {
                self.displayDialog("Data Fetched From Server:", results)
            })
        }
        DispatchQueue.global(qos: DispatchQoS.QoSClass.background).async(execute: {
            httpTask.resume()
        })
    }
}





<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>CFBundleDevelopmentRegion</key>
	<string>$(DEVELOPMENT_LANGUAGE)</string>
	<key>CFBundleExecutable</key>
	<string>$(EXECUTABLE_NAME)</string>
	<key>CFBundleIdentifier</key>
	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
	<key>CFBundleInfoDictionaryVersion</key>
	<string>6.0</string>
	<key>CFBundleName</key>
	<string>$(PRODUCT_NAME)</string>
	<key>CFBundlePackageType</key>
	<string>APPL</string>
	<key>CFBundleShortVersionString</key>
	<string>1.0</string>
	<key>CFBundleVersion</key>
	<string>1</string>
	<key>LSRequiresIPhoneOS</key>
	<true/>
	<key>UILaunchStoryboardName</key>
	<string>LaunchScreen</string>
	<key>UIMainStoryboardFile</key>
	<string>Main</string>
	<key>UIRequiredDeviceCapabilities</key>
	<array>
		<string>armv7</string>
	</array>
	<key>UISupportedInterfaceOrientations</key>
	<array>
		<string>UIInterfaceOrientationPortrait</string>
		<string>UIInterfaceOrientationLandscapeLeft</string>
		<string>UIInterfaceOrientationLandscapeRight</string>
	</array>
	<key>UISupportedInterfaceOrientations~ipad</key>
	<array>
		<string>UIInterfaceOrientationPortrait</string>
		<string>UIInterfaceOrientationPortraitUpsideDown</string>
		<string>UIInterfaceOrientationLandscapeLeft</string>
		<string>UIInterfaceOrientationLandscapeRight</string>
	</array>

  <!-- REFERENCE (ALLOW HTTP REQUESTS): https://stackoverflow.com/questions/31254725/transport-security-has-blocked-a-cleartext-http -->
	<key>NSAppTransportSecurity</key>
	<dict>
	  <key>NSExceptionDomains</key>
	  <dict>
	    <key>flashtri.com</key>
	    <dict>
	      <!--Include to allow subdomains-->
	      <key>NSIncludesSubdomains</key>
	      <true/>
	      <!--Include to allow HTTP requests-->
	      <key>NSTemporaryExceptionAllowsInsecureHTTPLoads</key>
	      <true/>
	    </dict>
	  </dict>
	</dict>

</dict>
</plist>