Downloading files from an Objective C or Swift server
How do I download audio files from my server to a custom phone that will be used in the application? When I go to a website link, the JSON code looks like this
[{"name":"Lets Party","path":"http:\/\/domain.us\/\/\/audios\/\/Lets Party.wav"},
{"name":"Let You Know","path":"http:\/\/domain.us\/\/\/audios\/\/Let You Know.wav"},
{"name":"OMG","path":"http:\/\/domain.us\/\/\/audios\/\/OMG.wav"}]
I tried to get JSON and convert it to Swift but it broke my application. But when I post a JSON blog, it works fine, no glitch. How do I do this in Swift or Objective-C?
EDIT: I get an error message.
Current code:
let urlPath = "http://www.domain.us/"
let url = NSURL(string: urlPath)
let session = NSURLSession.sharedSession()
let task = session.dataTaskWithURL(url, completionHandler: {data, response, error -> Void in
if error != nil {
println(error)
} else {
let jsonResult = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers, error: nil) as NSDictionary
println(jsonResult)
}
})
task.resume()
}
Error message:
2014-11-12 20:07:23.652 JSON Practice[6073:284290] CFNetwork SSLHandshake failed (-9847)
2014-11-12 20:07:23.874 JSON Practice[6073:284290] CFNetwork SSLHandshake failed (-9847)
2014-11-12 20:07:24.054 JSON Practice[6073:284290] CFNetwork SSLHandshake failed (-9847)
2014-11-12 20:07:24.055 JSON Practice[6073:284290] NSURLConnection/CFURLConnection HTTP load failed (kCFStreamErrorDomainSSL, -9847)
Error Domain=NSURLErrorDomain Code=-1200 "The operation couldn’t be completed. (NSURLErrorDomain error -1200.)" UserInfo=0x7fc0ba656020 {NSErrorFailingURLStringKey=https://www.domain.us/, NSErrorFailingURLKey=https://www.makemeip.us/, _kCFStreamErrorDomainKey=3, _kCFStreamErrorCodeKey=-9847, NSUnderlyingError=0x7fc0ba52ebb0 "The operation couldn’t be completed. (kCFErrorDomainCFNetwork error -1200.)"}
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//
// ViewController.swift
// Test2
//
// Created by adm on 11/14/14.
// Copyright (c) 2014 Dabus.Tv. All rights reserved.
//
import UIKit
import Foundation
import AVFoundation
class ViewController: UIViewController {
@IBOutlet weak var strFiles: UITextView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
if let url = NSURL(string: "http://www.anyurl.com/") {
if let loadedString = String(contentsOfURL: url) {
// file string was sucessfully loaded
// add the file path + / + filename + extension
let localUrl = (NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as String) + "/" + "data" + ".db" // Documents URL as String (local storage path)
// check local file path url
if let checkLocalUrl = NSURL(fileURLWithPath: localUrl) {
let savedFile = loadedString.writeToURL(checkLocalUrl, atomically: true, encoding: NSUTF8StringEncoding, error: nil) // write to url savedFile will true or false
if savedFile {
// do whatever
self.strFiles.text = "\(self.strFiles.text)path: \(checkLocalUrl)\n"
self.strFiles.text = "\(self.strFiles.text)file was sucessfully saved\n"
}
// lets create an ARRAY with your string
var arrayLines = ""
if let myArrayParsed = loadedString.JSONParseArray() {
for elem:AnyObject in myArrayParsed {
let name = elem["name"] as String
let path = elem["path"] as String
arrayLines = "Name: \(name), Path: \(path)"
self.strFiles.text = "\(self.strFiles.text)\(arrayLines)\n"
}
} else {
// could not parse array
}
} else {
// could not check local url
}
} else {
// could not load string contents from url
}
} else {
// invalid url
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
extension String {
func JSONParseArray() -> [AnyObject]? {
if let data = self.dataUsingEncoding(NSUTF8StringEncoding) {
if let array = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions(0), error: nil) as? [AnyObject] {
return array
}
} else {
return nil
}
return [AnyObject]()
}
}
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