tibame.com iOS Swift 網路服務應用 - 資料接收

README.md

資料傳輸

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_Info.plist

<?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>en</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>NSAppTransportSecurity</key>
	<dict>
		<key>NSAllowsArbitraryLoads</key>
		<false/>
		<key>NSExceptionDomains</key>
		<dict>
			<key>data.taipei</key>
			<dict>
				<key>NSExceptionAllowsInsecureHTTPLoads</key>
				<true/>
				<key>NSExceptionRequiresForwardSecrecy</key>
				<false/>
				<key>NSIncludesSubdomains</key>
				<true/>
			</dict>
		</dict>
	</dict>
</dict>
</plist>

ViewController.swift

//
//  ViewController.swift
//  GetData
//
//  Created by Edward Chiang on 25/11/2016.
//  Copyright © 2016 TKU. All rights reserved.
//

import UIKit

class ViewController: UIViewController, URLSessionDelegate, URLSessionDownloadDelegate {
    
    @IBOutlet weak var imageView: UIImageView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        
        // Download data only
        self.downloadData()
        
        // Download image url
        self.downloadImage()

    }

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

    // MARK: - Private
    
    func downloadData() {
        let url = URL(string: "http://data.taipei/opendata/datalist/apiAccess?scope=resourceAquire&rid=11930dc6-4092-4bde-a42c-7722e0416462")
        let request = URLRequest(url: url!)
        let task = URLSession.shared.dataTask(with: request, completionHandler: {(data: Data?, response: URLResponse?, error: Error?) -> Void in
            if data != nil {
//                print(NSString(data: data!, encoding: String.Encoding.utf8.rawValue) ?? "data.taipei")
                
                do {
                    let data : [String: AnyObject] = try JSONSerialization.jsonObject(with: data!, options: JSONSerialization.ReadingOptions.allowFragments) as! [String: AnyObject]
                    let dataResultRootArray : [String: AnyObject] = data["result"] as! [String: AnyObject]
                    let dataResult : Array<[String: AnyObject]> = dataResultRootArray["results"] as! Array<[String: AnyObject]>
//                    print("Data serialization: \(dataResult)")
                    for eachDataInfo : [String: AnyObject] in dataResult {
                        print("Each data row id: \(eachDataInfo["_id"]) lat, lon = \(eachDataInfo["LAT"]!), \(eachDataInfo["LON"]!)")
                    }
                } catch {
                    print("Error")
                }
            }
        })
        task.resume()
    }
    
    func downloadImageWithProgress() {
        
        let imageUrl = URL(string: "https://i.ytimg.com/vi/fz1cBwNEUXI/maxresdefault.jpg")
        
        let session = URLSession(configuration: URLSessionConfiguration.default, delegate: self, delegateQueue: nil)
        
        let imageTask = session.downloadTask(with: imageUrl!)
        
        imageTask.resume()
        
    }

    func downloadImage() {
        let imageUrl = URL(string: "https://i.ytimg.com/vi/fz1cBwNEUXI/maxresdefault.jpg")
        let imageRequest = URLRequest(url: imageUrl!)
        
        let imageTask = URLSession.shared.dataTask(with: imageRequest, completionHandler: {(data: Data?, response: URLResponse?, error: Error?) -> Void in
            if data != nil {
                DispatchQueue.main.async {
                    self.imageView.image = UIImage(data: data!)
                }

            }
        })
        imageTask.resume()
    }
    
    // MARK: - URLSessionDownloadDelegate
    
    func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask, didWriteData bytesWritten: Int64, totalBytesWritten: Int64, totalBytesExpectedToWrite: Int64) {
        let progress = Double(totalBytesWritten) / Double(totalBytesExpectedToWrite)
        
        print(String(format: "%.2f%%", progress * 100))
    }
    
    func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask, didFinishDownloadingTo location: URL) {
        // The file “CFNetworkDownload_1SZyO3.tmp” couldn’t be opened because there is no such file.
    }
}