Google Search with Alamofire Fails (iOS, Swift, JSON, HTML) - html

Please help! I'm stuck for months now trying to perform a simple Google Search on my Swift App and I'm way past smashing my head through the wall!
I've tried both with ALAMOFIRE and With a Regular URLRequest, but since the result seems to be only in HTML Format, I Can't seem to parse the results correctly. Even when you look into the HTML Format, the code is for a Webpage, and it does NOT Include the Search Results.
I Would LOVE to have the search Results into a Simple Dictionary. Here is my Code:
let googleUrl:String = "https://cse.google.com/cse/publicurl?&output=json&cx=<MyGoogleKey>:<MyGoogleSKey>&q=q=+normal+search"
// Trying with AlamoFire:
Alamofire.request(googleUrl).response { response in
print("Request: \(response.request)")
print("Response: \(response.response)")
print("Error: \(response.error)")
}.responseJSON(completionHandler: { response in
print("ResponseJSON: \(response)")
}).responseData(completionHandler: { response in
print("ResponseData: \(response)")
}).responseString(completionHandler: { response in
print("ResponseString: \(response)")
})
As you See I Try the Response in almost ALL Alamofire supported Types and I GEt NOTHING.
Here is Error #1 (.responseJSON):
The data couldn’t be read because it isn’t in the correct format.
ResponseJSON: FAILURE: responseSerializationFailed(Alamofire.AFError.ResponseSerializationFailureReason.jsonSerializationFailed(Error Domain=NSCocoaErrorDomain Code=3840 "Invalid value around character 0." UserInfo={NSDebugDescription=Invalid value around character 0.}))
Here is DATA Response (.responseData):
ResponseData: SUCCESS: 4337 bytes
Here is the Response HTML (.responseString)
ResponseString: SUCCESS:
*> Google Custom Search
(function(){var cookie_path='/cse/';var
path_copy='/coop/';window._gaq =
window._ga...._AND_SO_ON_TILL_FULL_HTML_PAGE_IN_A_STRING....*
* I Only wish I Could have the Search Results in a Simple Dictionary...
Anyone? Please?

You seem to be using the Custom Search API for embedding into web pages.
This documentation is for what you want to do.
Here is an example using stack overflow as the search domain.
import UIKit
import Alamofire
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
search(query: "swift") { (results) in
for result in results {
dump(result)
}
}
}
func search(query:String, completion: #escaping (Array<SearchResult>)->()){
let id = "Custom search engine ID"
let key = "API key"
let url = "https://www.googleapis.com/customsearch/v1?key=\(key)&cx=\(id)&q=\(query)"
Alamofire.request(url).responseJSON { (response) in
var results = Array<SearchResult>()
if let dict = response.value as? Dictionary<String,Any> {
if let items = dict["items"] as? Array<Dictionary<String,Any>> {
for item in items {
if let result = SearchResult(dict: item) {
results.append(result)
} else {
print("Incomplete search result data.")
}
}
}
}
completion(results)
}
}
}
I have this struct to store the search results better. It doesn't contain all the values that the JSON results does. I just chose these ones for testing.
struct SearchResult {
var displayLink: String
var formattedUrl: String
var htmlFormattedUrl: String
var htmlSnippet: String
var htmlTitle: String
var link: String
var snippet: String
var title: String
init?(dict:Dictionary<String,Any>) {
guard
let displayLink = dict["displayLink"] as? String,
let formattedUrl = dict["formattedUrl"] as? String,
let htmlFormattedUrl = dict["htmlFormattedUrl"] as? String,
let htmlSnippet = dict["htmlSnippet"] as? String,
let htmlTitle = dict["htmlTitle"] as? String,
let link = dict["link"] as? String,
let snippet = dict["snippet"] as? String,
let title = dict["title"] as? String
else {
return nil
}
self.displayLink = displayLink
self.formattedUrl = formattedUrl
self.htmlFormattedUrl = htmlFormattedUrl
self.htmlSnippet = htmlSnippet
self.htmlTitle = htmlTitle
self.link = link
self.snippet = snippet
self.title = title
}
}
This is a couple of results that dump(result) prints out.
▿ CustomGoogleSearch.SearchResult
- displayLink: "stackoverflow.com"
- formattedUrl: "https://stackoverflow.com/questions/tagged/swift"
- htmlFormattedUrl: "https://stackoverflow.com/questions/tagged/<b>swift</b>"
- htmlSnippet: "<b>Swift</b> is an open-source programming language developed by Apple. Use the tag <br>\nonly for questions about language features, or requiring code in <b>Swift</b>. Use the ..."
- htmlTitle: "Newest '<b>swift</b>' Questions - Stack Overflow"
- link: "https://stackoverflow.com/questions/tagged/swift"
- snippet: "Swift is an open-source programming language developed by Apple. Use the tag \nonly for questions about language features, or requiring code in Swift. Use the ..."
- title: "Newest \'swift\' Questions - Stack Overflow"
▿ CustomGoogleSearch.SearchResult
- displayLink: "stackoverflow.com"
- formattedUrl: "stackoverflow.com/documentation/swift/topics"
- htmlFormattedUrl: "stackoverflow.com/documentation/<b>swift</b>/topics"
- htmlSnippet: "58 example-focused documentation topics for <b>Swift</b> Language."
- htmlTitle: "All <b>Swift</b> Language Topics - Stack Overflow"
- link: "http://stackoverflow.com/documentation/swift/topics"
- snippet: "58 example-focused documentation topics for Swift Language."
- title: "All Swift Language Topics - Stack Overflow"
Getting the keys
On this page, click the Get A Key button.
You then need to select or create a Google project, then you will be generated an API Key. So copy this an put in here let key = "API key"
For the Search Engine ID, go to your console. Now either select a search engine or create a new one. You'll get to a page like this.
Click the Search engine ID button, this will display a screen with your id, then put that here let id = "Custom search engine ID"

Related

Automatic parsing JSON with Swift 5 and Alomofire

I am calling an API via Alomofire in Swift 5 and get the following Result Set in JSON format :
Here is the call :
AF.request("https://shopping.yahooapis.jp/ShoppingWebService/V1/json/itemSearch", parameters: parameters).responseJSON { response in
print(response.result)
}
I have the following info in the result : Content-Encoding: gzip, the solution may come from here)
Here is the JSON Response body :
{"ResultSet":{"totalResultsAvailable":"3","totalResultsReturned":3,"firstResultPosition":"1","0":{"Result":{"Request":{"Query":""},"Modules":"","0":{"Name":"\u3010\u30ad\u30e3\u30c3\u30b7\u30e5\u30ec\u30b95\uff05\u9084\u5143\u3011\u30ab\u30eb\u30d3\u30fc\u3000\u304b\u3063\u3071\u3048\u3073\u305b\u3093\u7d00\u5dde\u306e\u6885\u547370g\u3000\u3010\u30a4\u30fc\u30b8\u30e3\u30d1\u30f3\u30e2\u30fc\u30eb\u3011","Description":"\u3010\u691c\u7d22\u30ad\u30fc\u30ef\u30fc\u30c9\uff08\u5546\u54c1\u5185\u5bb9\u3092\u4fdd\u969c\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\uff09\u3011\u304a\u83d3\u5b50\u3000\u304a\u3084\u3064\u3000\u30b9\u30ca\u30c3\u30af\u3000\u30b9\u30ca\u30c3\u30af\u83d3\u5b50\u3000\u30ab\u30c3\u30d1\u30a8\u30d3\u30bb\u30f3\u3000\u3046\u3081\u5473\u3000\u30a6\u30e1\u3000\u6d77\u8001\u3000\u30ab\u30eb\u30b7\u30a6\u30e0","Headline":"","Url":"https:\/\/store.shopping.yahoo.co.jp\/ejapan\/4901330197711f.html","ReleaseDate":"","Availability":"instock","Code":"ejapan_4901330197711f","Condition":"new","Image":{"Id":"ejapan_4901330197711f","Small":"https:\/\/item-shopping.c.yimg.jp\/i\/c\/ejapan_4901330197711f","Medium":"https:\/\/item-shopping.c.yimg.jp\/i\/g\/ejapan_4901330197711f"},"Review":{"Rate":"0.00","Count":"0","Url":"https:\/\/shopping.yahoo.co.jp\/review\/item\/list?store_id=ejapan&page_key=4901330197711f"},"Affiliate":{"Rate":"1.0"},"Price":{"_attributes":{"currency":"JPY"},"_value":"121"},"PremiumPrice":"","PriceLabel":{"_attributes":{"taxIncluded":"true"},"FixedPrice":"","DefaultPrice":"121","SalePrice":"","PremiumPriceStatus":"0","PremiumPrice":"121","PremiumDiscountType":"","PremiumDiscountRate":"","PeriodStart":"","PeriodEnd":""},"Point":{"Amount":"1","Times":"1","PremiumAmount":"1","PremiumTimes":"1"},"Shipping":{"Code":"1","Name":"\u8a2d\u5b9a\u7121\u3057"},"Category":{"Current":{"Id":"13451","Name":"\u305d\u306e\u4ed6\u30b9\u30ca\u30c3\u30af\u3001\u304a\u83d3\u5b50\u3001\u304a\u3064\u307e\u307f"}},"CategoryIdPath":{"0":{"Id":"1"},"1":{"Id":"2498"},"2":{"Id":"4745"},"3":{"Id":"13451"},"_container":"Category"},"Brands":{"Name":"\u30ab\u30eb\u30d3\u30fc","Path":{"0":{"Id":"1"},"1":{"Id":"16267"},"_container":"Brand"}},"JanCode":"4901330197711","Model":"","IsbnCode":"","Store":{"Id":"ejapan","Name":"e\u30b8\u30e3\u30d1\u30f3","Url":"https:\/\/store.shopping.yahoo.co.jp\/ejapan\/","Payment":{"0":{"Code":"1","Name":"\u30af\u30ec\u30b8\u30c3\u30c8\u30ab\u30fc\u30c9"},"1":{"Code":"16","Name":"Yahoo!\u30a6\u30a9\u30ec\u30c3\u30c8\u306b\u767b\u9332\u3057\u3066\u3044\u308b\u30af\u30ec\u30b8\u30c3\u30c8\u30ab\u30fc\u30c9"},"2":{"Code":"4","Name":"\u5546\u54c1\u4ee3\u5f15"},"3":{"Code":"2","Name":"\u9280\u884c\u632f\u8fbc"},"4":{"Code":"8","Name":"\u90f5\u4fbf\u632f\u66ff"},"5":{"Code":"1024","Name":"\u30bd\u30d5\u30c8\u30d0\u30f3\u30af\u307e\u3068\u3081\u3066\u652f\u6255\u3044"},"6":{"Code":"4096","Name":"PayPay"},"_container":"Method"},"IsBestStore":"false","Ratings":{"Rate":"4.5","Count":"11871","Total":"51092","DetailRate":"4.3"},"Image":{"Id":"ejapan_1","Medium":"https:\/\/item-shopping.c.yimg.jp\/s\/h\/ejapan_1"},"IsPMallStore":"false"},"IsAdult":"0","Deliveryinfo":{"Area":"","Deadline":"","Day":""},"_attributes":{"index":"1"}},"1":{"Name":"\u3010\u30ad\u30e3\u30c3\u30b7\u30e5\u30ec\u30b95\uff05\u9084\u5143\u3011\u2605\u307e\u3068\u3081\u8cb7\u3044\u2605\u3000\u30ab\u30eb\u30d3\u30fc\u3000\u304b\u3063\u3071\u3048\u3073\u305b\u3093\u7d00\u5dde\u306e\u6885\u547370g\u3000\u3000\u00d712\u500b\u3010\u30a4\u30fc\u30b8\u30e3\u30d1\u30f3\u30e2\u30fc\u30eb\u3011","Description":"\u3010\u691c\u7d22\u30ad\u30fc\u30ef\u30fc\u30c9\uff08\u5546\u54c1\u5185\u5bb9\u3092\u4fdd\u969c\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\uff09\u3011\u304a\u83d3\u5b50\u3000\u304a\u3084\u3064\u3000\u30b9\u30ca\u30c3\u30af\u3000\u30b9\u30ca\u30c3\u30af\u83d3\u5b50\u3000\u30ab\u30c3\u30d1\u30a8\u30d3\u30bb\u30f3\u3000\u3046\u3081\u5473\u3000\u30a6\u30e1\u3000\u6d77\u8001\u3000\u30ab\u30eb\u30b7\u30a6\u30e0","Headline":"","Url":"https:\/\/store.shopping.yahoo.co.jp\/ejapan\/012-4901330197711f.html","ReleaseDate":"","Availability":"instock","Code":"ejapan_012-4901330197711f","Condition":"new","Image":{"Id":"ejapan_012-4901330197711f","Small":"https:\/\/item-shopping.c.yimg.jp\/i\/c\/ejapan_012-4901330197711f","Medium":"https:\/\/item-shopping.c.yimg.jp\/i\/g\/ejapan_012-4901330197711f"},"Review":{"Rate":"0.00","Count":"0","Url":"https:\/\/shopping.yahoo.co.jp\/review\/item\/list?store_id=ejapan&page_key=012-4901330197711f"},"Affiliate":{"Rate":"1.0"},"Price":{"_attributes":{"currency":"JPY"},"_value":"1398"},"PremiumPrice":"","PriceLabel":{"_attributes":{"taxIncluded":"true"},"FixedPrice":"","DefaultPrice":"1398","SalePrice":"","PremiumPriceStatus":"0","PremiumPrice":"1398","PremiumDiscountType":"","PremiumDiscountRate":"","PeriodStart":"","PeriodEnd":""},"Point":{"Amount":"13","Times":"1","PremiumAmount":"13","PremiumTimes":"1"},"Shipping":{"Code":"1","Name":"\u8a2d\u5b9a\u7121\u3057"},"Category":{"Current":{"Id":"13451","Name":"\u305d\u306e\u4ed6\u30b9\u30ca\u30c3\u30af\u3001\u304a\u83d3\u5b50\u3001\u304a\u3064\u307e\u307f"}},"CategoryIdPath":{"0":{"Id":"1"},"1":{"Id":"2498"},"2":{"Id":"4745"},"3":{"Id":"13451"},"_container":"Category"},"Brands":{"Name":"\u30ab\u30eb\u30d3\u30fc","Path":{"0":{"Id":"1"},"1":{"Id":"16267"},"_container":"Brand"}},"JanCode":"4901330197711","Model":"","IsbnCode":"","Store":{"Id":"ejapan","Name":"e\u30b8\u30e3\u30d1\u30f3","Url":"https:\/\/store.shopping.yahoo.co.jp\/ejapan\/","Payment":{"0":{"Code":"1","Name":"\u30af\u30ec\u30b8\u30c3\u30c8\u30ab\u30fc\u30c9"},"1":{"Code":"16","Name":"Yahoo!\u30a6\u30a9\u30ec\u30c3\u30c8\u306b\u767b\u9332\u3057\u3066\u3044\u308b\u30af\u30ec\u30b8\u30c3\u30c8\u30ab\u30fc\u30c9"},"2":{"Code":"4","Name":"\u5546\u54c1\u4ee3\u5f15"},"3":{"Code":"2","Name":"\u9280\u884c\u632f\u8fbc"},"4":{"Code":"8","Name":"\u90f5\u4fbf\u632f\u66ff"},"5":{"Code":"1024","Name":"\u30bd\u30d5\u30c8\u30d0\u30f3\u30af\u307e\u3068\u3081\u3066\u652f\u6255\u3044"},"6":{"Code":"4096","Name":"PayPay"},"_container":"Method"},"IsBestStore":"false","Ratings":{"Rate":"4.5","Count":"11875","Total":"51100","DetailRate":"4.3"},"Image":{"Id":"ejapan_1","Medium":"https:\/\/item-shopping.c.yimg.jp\/s\/h\/ejapan_1"},"IsPMallStore":"false"},"IsAdult":"0","Deliveryinfo":{"Area":"","Deadline":"","Day":""},"_attributes":{"index":"2"}},"2":{"Name":"\u3010\u30ad\u30e3\u30c3\u30b7\u30e5\u30ec\u30b95\uff05\u9084\u5143\u3011\u3010\u9001\u6599\u7121\u6599\u3011\u2605\u307e\u3068\u3081\u8cb7\u3044\u2605\u3000\u30ab\u30eb\u30d3\u30fc\u3000\u304b\u3063\u3071\u3048\u3073\u305b\u3093\u7d00\u5dde\u306e\u6885\u547370g\u3000\u3000\u00d712\u500b\u3010\u30a4\u30fc\u30b8\u30e3\u30d1\u30f3\u30e2\u30fc\u30eb\u3011","Description":"\u3010\u691c\u7d22\u30ad\u30fc\u30ef\u30fc\u30c9\uff08\u5546\u54c1\u5185\u5bb9\u3092\u4fdd\u969c\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\uff09\u3011\u304a\u83d3\u5b50\u3000\u304a\u3084\u3064\u3000\u30b9\u30ca\u30c3\u30af\u3000\u30b9\u30ca\u30c3\u30af\u83d3\u5b50\u3000\u30ab\u30c3\u30d1\u30a8\u30d3\u30bb\u30f3\u3000\u3046\u3081\u5473\u3000\u30a6\u30e1\u3000\u6d77\u8001\u3000\u30ab\u30eb\u30b7\u30a6\u30e0","Headline":"","Url":"https:\/\/store.shopping.yahoo.co.jp\/ejapan\/012-4901330197711fm.html","ReleaseDate":"","Availability":"instock","Code":"ejapan_012-4901330197711fm","Condition":"new","Image":{"Id":"ejapan_012-4901330197711fm","Small":"https:\/\/item-shopping.c.yimg.jp\/i\/c\/ejapan_012-4901330197711fm","Medium":"https:\/\/item-shopping.c.yimg.jp\/i\/g\/ejapan_012-4901330197711fm"},"Review":{"Rate":"0.00","Count":"0","Url":"https:\/\/shopping.yahoo.co.jp\/review\/item\/list?store_id=ejapan&page_key=012-4901330197711fm"},"Affiliate":{"Rate":"1.0"},"Price":{"_attributes":{"currency":"JPY"},"_value":"2278"},"PremiumPrice":"","PriceLabel":{"_attributes":{"taxIncluded":"true"},"FixedPrice":"","DefaultPrice":"2278","SalePrice":"","PremiumPriceStatus":"0","PremiumPrice":"2278","PremiumDiscountType":"","PremiumDiscountRate":"","PeriodStart":"","PeriodEnd":""},"Point":{"Amount":"22","Times":"1","PremiumAmount":"22","PremiumTimes":"1"},"Shipping":{"Code":"1","Name":"\u8a2d\u5b9a\u7121\u3057"},"Category":{"Current":{"Id":"13451","Name":"\u305d\u306e\u4ed6\u30b9\u30ca\u30c3\u30af\u3001\u304a\u83d3\u5b50\u3001\u304a\u3064\u307e\u307f"}},"CategoryIdPath":{"0":{"Id":"1"},"1":{"Id":"2498"},"2":{"Id":"4745"},"3":{"Id":"13451"},"_container":"Category"},"Brands":{"Name":"\u30ab\u30eb\u30d3\u30fc","Path":{"0":{"Id":"1"},"1":{"Id":"16267"},"_container":"Brand"}},"JanCode":"4901330197711","Model":"","IsbnCode":"","Store":{"Id":"ejapan","Name":"e\u30b8\u30e3\u30d1\u30f3","Url":"https:\/\/store.shopping.yahoo.co.jp\/ejapan\/","Payment":{"0":{"Code":"1","Name":"\u30af\u30ec\u30b8\u30c3\u30c8\u30ab\u30fc\u30c9"},"1":{"Code":"16","Name":"Yahoo!\u30a6\u30a9\u30ec\u30c3\u30c8\u306b\u767b\u9332\u3057\u3066\u3044\u308b\u30af\u30ec\u30b8\u30c3\u30c8\u30ab\u30fc\u30c9"},"2":{"Code":"4","Name":"\u5546\u54c1\u4ee3\u5f15"},"3":{"Code":"2","Name":"\u9280\u884c\u632f\u8fbc"},"4":{"Code":"8","Name":"\u90f5\u4fbf\u632f\u66ff"},"5":{"Code":"1024","Name":"\u30bd\u30d5\u30c8\u30d0\u30f3\u30af\u307e\u3068\u3081\u3066\u652f\u6255\u3044"},"6":{"Code":"4096","Name":"PayPay"},"_container":"Method"},"IsBestStore":"false","Ratings":{"Rate":"4.5","Count":"11874","Total":"51099","DetailRate":"4.3"},"Image":{"Id":"ejapan_1","Medium":"https:\/\/item-shopping.c.yimg.jp\/s\/h\/ejapan_1"},"IsPMallStore":"false"},"IsAdult":"0","Deliveryinfo":{"Area":"","Deadline":"","Day":""},"_attributes":{"index":"3"}},"_container":"Hit"}}}}
So I would like to find the way to automatically parse this JSON body in order to exploit the data later,
Does the solution come from the encoding format ?
I have not been successful implementing decompressing using Gzip (link here)
Would it be possible to do it automatically via Decodable or the data is maybe directly accessible in Alomofire ?
Thank you in advance,
Charles
When it comes to decoding and holding data from JSON responses from REST APIs, I have used the following approach:
Include the bellow two PODS
1) Alamofire
2) TRON
Now, you'll have to create a class you'll use as a datasource interface between the API and the actual class model. In the following example, I'm pulling data from a movie database service and I have the bellow class for the data sourcing:
class MovieDataSource: JSONDecodable {
var movies: [Movie] = []
let cellid = "cellid"
required init(json: JSON) throws {
guard let moviesArray = json["results"].array else {
print("Error on the JSON Format")
return
}
self.movies = moviesArray.map({return Movie(json: $0)})
}
}
class JSONError: JSONDecodable {
required init(json: JSON) throws {
print("JSON error\n", json)
}
}
Then I have the actual data holding class/structure:
struct Movie {
let title: String
let movieId: Int
let overview: String
let releaseDate: String
let posterPathURL: String
let genres: [Int]
let vote_average: Float
let popularity: Float
let isForAdults: Bool
init(json: JSON) {
self.title = json["title"].stringValue
self.movieId = json["id"].intValue
self.overview = json["overview"].stringValue
self.releaseDate = json["release_date"].stringValue
self.posterPathURL = json["poster_path"].stringValue
self.genres = json["genre_ids"].arrayObject as! [Int]
self.vote_average = json["vote_average"].floatValue
self.popularity = json["popularity"].floatValue
self.isForAdults = json["adult"].boolValue
}
}
I think the above information should be enough to get you an idea on how to move forward, but If you need further guidance, I found this video series very educative on this subject: https://www.youtube.com/watch?v=tt67VikEovY&list=PL0dzCUj1L5JE1wErjzEyVqlvx92VN3DL5&index=13
Good luck!

Formatting JSON in swift: Invalid type in JSON write (OS_dispatch_data)

I am trying to send a post request to and api that contains a list of "items" that can be either an image or text.
However, I keep getting an error (listed in Title)
Here is the code turning my objects into JSON
var json = [String: Any]()
var jsonItems = [Any]()
for i in 0...(items.count - 1){
var it = [String: Any]()
if let imageData = items[i].image?.jpgData(){
it["image"] = imageData
}
if let text = items[i].text{
it["text"] = text
}
if i == 0 {
it["is_profile"] = true
it["face_detected"] = faceDetected
}
jsonItems.append(it)
}
json["items"] = jsonItems
Is there any reason why this would not be formatted correctly?
EDIT:
The jpgData function
func jpgData() -> Data? {
return UIImageJPEGRepresentation(self, 0.8)
}
Example code that causes crash:
extension Dictionary {
var json: String {
let invalidJson = "Not a valid JSON"
do {
let jsonData = try JSONSerialization.data(withJSONObject: self, options: .prettyPrinted)
return String(bytes: jsonData, encoding: String.Encoding.utf8) ?? invalidJson
} catch {
return invalidJson
}
}
}
In addition to my sample code, passing the created dict as the param for Alamofire requests, URLSession requests, etc all cause a crash with the error from the title
EDIT: Solution
Image data did need to be encoded. Feels so obvious in hindsight. Base64 encoding worked for printing out the structure like in my extension, but for network requests I ended up using Alamofire's MultipartFormData class (a custom wrapper around it) and appended as an application/octet-stream for the mimetype. Wish I could use a facepalm emoji here. I accepted one of the two answers that talked about encoding that actually had sample code.
After converting to JPEG Data try encoding to base64
let strBase64 = imageData.base64EncodedString(options: .lineLength64Characters)
Check this answer for more info Convert between UIImage and Base64 string
A Data cannot be put into JSON. The Data object will have to be encoded. Probably using base64 encoding.

Unwrapping JSON from Itunes API - IOS App

Having an issue with my program. I would appreciate it if someone could help out. I have tried for weeks to parse the JSON files fetched from the iTunes API
(itunes.apple.com/search?term=song+you+want+to+search&entity=songTrack).
However, my answers are never displayed on my tableview and an error always shows up in the terminal:
"2017-11-14 17:25:28.809190+0100 Itunes Learning[32409:6240818] [MC] Lazy loading NSBundle MobileCoreServices.framework
2017-11-14 17:25:28.810264+0100 Itunes Learning[32409:6240818] [MC] Loaded MobileCoreServices.framework
2017-11-14 17:25:28.823734+0100 Itunes Learning[32409:6240818] [MC] System group container for systemgroup.com.apple.configurationprofiles path is /Users/cyprianzander/Library/Developer/CoreSimulator/Devices/D52FD9D5-B6E4-4CE0-99E4-6E0EE15A680D/data/Containers/Shared/SystemGroup/systemgroup.com.apple.configurationprofiles
Could not cast value of type '__NSDictionaryI' (0x103b911d8) to 'NSArray' (0x103b90d28).
2017-11-14 17:25:29.875534+0100 Itunes Learning[32409:6240900] Could not cast value of type '__NSDictionaryI' (0x103b911d8) to 'NSArray' (0x103b90d28).
(lldb) "
This is approximately how the JSON file is set up:
{“resultCount” : 50, “results”: [ {“trackName”:”name”, ”artistName”:”name2”}, {“trackName”:”name3”, “artistName”:”name4”} ] }
(An array of objects inside an array - meaning the first object is on the far outside).
I have tried my function with another API, which did work. I have the feeling that the main reason as to why this happens, is because the iTunes API JSON file is very complex. It is an assortment of very long objects inside an array, which is inside a smaller list of objects. However, the other one was only and array of objects.
Here is my code: (I have noticed that the problem occurs while parsing the data I need. The only thing I need to know is how to properly unwrap my JSON file)
func parseData(searchTerm: String) {
fetchedSong = []
let itunesSearchTerm = searchTerm.replacingOccurrences(of: " ", with: "+", options: .caseInsensitive, range: nil)
let escapedSearchTerm = itunesSearchTerm.addingPercentEncoding(withAllowedCharacters: [])!
let urlString = "https://itunes.apple.com/search?term=\(escapedSearchTerm)&entity=song"
let url = URL(string: urlString)!
URLSession.shared.dataTask(with: url) { (data, response, error) in
if let error = error {
// If there is an error in the web request, print it to the console
print(error)
return
}
else {
do {
let fetchedData = try JSONSerialization.jsonObject(with: data!, options: .mutableLeaves) as! NSArray
print(fetchedData)
for eachFetchedSong in fetchedData {
let eachSong = eachFetchedSong as! [String: Any]
let song = eachSong["trackName"] as! String
let artist = eachSong["artistName"] as! String
self.fetchedSong.append(songs(song: song, artist : artist))
}
self.SongTableView.reloadData()
}
catch {
print("An error occured while decoding the JSON object")
}
}
}.resume()
}
If anyone could help me, I would be extremely happy, especially because I have been stuck with this for three weeks, continuously trying different techniques (this one seemed the most successful).
Your JSON data is not an array. It is a dictionary with two key/value pairs. The first is the key "resultCount" with a value of 50, and the second is the key "results" with an array as its value.
Never use as! when parsing JSON, since this will crash your app if you get an unexpected result. Don't use .mutableLeaves unless you can explain to us what it does and why you need it. Don't use NSArray in your Swift code.
Handling one error and crashing on others is pointless. I'd write
if let fetchedDict = try? JSONSerialization(...) as? [String:Any],
let fetchedArray = fetchedDict ["results"] as? [[String:Any]] {
for dict in fetchedArray {
if let song = dict ["trackName"] as? String,
let artist = dict ["artistName"] as? String {
...
}
}
}

Swift 3 & JSON – How to edit data received from the database?

This is a simple question of how-to. I don't know (and can't figure out on my own) what the correct terminology is for "editing" the data received from the JSON code. Here's my current code:
// Create a url and a session to load it in the background.
let url = URL(string: "http://api.fixer.io/latest")
let task = URLSession.shared.dataTask(with: url!) { (data, response, error) in
if error == nil {
// Try to extract some content from the data.
if let content = data {
do {
// Try to create an array out of the extracted data content.
let jsonResult = try JSONSerialization.jsonObject(with: content, options: JSONSerialization.ReadingOptions.mutableContainers) as AnyObject
// Search for specific objects in the array.
if let rates = jsonResult["rates"] as? NSDictionary {
print("Rates: \(rates)\n\n")
if let currency = rates["USD"] {
// Output of line below is – "Currency: \"1.0893\""
print("Currency: \(currency)")
}
}
} catch {
print("Error deserializing the JSON:\n\(String(describing: error))")
}
}
} else {
print("Error creating the URLSession:\n\(String(describing: error))")
}
}
// Begin using the URLSession to extract the data.
task.resume()
As you can see above, I am getting some data from a url using JSON, and then extracting a specific set of data which I'm titling rates and currency.
However, I can't find anywhere on the web for how to edit data. For example: let's say I want to change the value of currency to be equal to "$230" instead of "1.0893." What is the term/code necessary to go in and change that? Another example would be if I wanted to add another object into the rates Dictionary. What if I wanted to add "MyCurrency: true", or something like that? I'm not knowledgeable of the specific syntax on this. I need help!
EDIT – Yes, I am trying to change the database itself, that way when the information is pulled from it later on, it is updated with the changes I make now. In my above example, I said I could change currency to "$230." Well, I want it to permanently stay that way in the database, so that when I extract its value later, instead of still being "1.0893," it's now the value I changed it to.
Is this term "pushing?" I would like to make changes to the database itself.
Parse the JSON into a custom struct or class, for example
struct Currency {
let abbrev : String
var value : Double
var myCurrency : Bool
var dictionaryRepresentation : [String:Any] {
return ["abbrev" : abbrev, "value" : value, "myCurrency" : myCurrency]
}
}
var currencies = [Currency]()
The abbrev member is a constant (let), the other members are variables.
...
// Try to create an array out of the extracted data content.
let jsonResult = try JSONSerialization.jsonObject(with: content) as! [String:Any]
if let rates = jsonResult["rates"] as? [String:Double] {
for (abbrev, value) in rates {
let myCurrency = abbrev == "USD"
currencies.append(Currency(abbrev: abbrev, value: value, myCurrency: myCurrency))
}
}
The code uses native Dictionary. And .mutableContainers is useless in Swift anyway.

Swift Siesta edit fetched entity

I'm building an API client using Siesta and Swift 3 on Xcode 8. I want to be able to fetch an entity using a Siesta resource, then update some of the data and do a patch to the API.
The issue is that having an entity, if I save the JSON arrays in my entity fields I can't send them back to the server, I get the following error:
▿ Siesta.RequestError
- userMessage: "Cannot send request"
- httpStatusCode: nil
- entity: nil
▿ cause: Optional(Siesta.RequestError.Cause.InvalidJSONObject())
- some: Siesta.RequestError.Cause.InvalidJSONObject
- timestamp: 502652734.40489101
My entity is:
import SwiftyJSON
import Foundation
struct Order {
let id: String?
let sessionId: String?
let userId: Int?
let status: String?
let comment: String?
let price: Float?
let products: Array<JSON>?
init(json: JSON) throws {
id = json["id"].string
sessionId = json["sessionId"].string
userId = json["userId"].int
status = json["status"].string
comment = json["comment"].string
price = json["price"].float
products = json["products"].arrayValue
}
/**
* Helper method to return data as a Dictionary to be able to modify it and do a patch
**/
public func toDictionary() -> Dictionary<String, Any> {
var dictionary: [String:Any] = [
"id": id ?? "",
"sessionId": sessionId ?? "",
"userId": userId ?? 0,
"status": status ?? "",
"comment": comment ?? ""
]
dictionary["products"] = products ?? []
return dictionary
}
}
What I'm doing is:
MyAPI.sessionOrders(sessionId: sessionId).request(.post, json: ["products": [["product": productId, "amount": 2]], "comment": "get Swifty"]).onSuccess() { response in
let createdObject : Order? = response.typedContent()
expect(createdObject?.sessionId).to(equal(sessionId))
expect(createdObject?.comment).to(equal("get Swifty"))
expect(createdObject?.products).to(haveCount(1))
expect(createdObject?.price).to(equal(product.price! * 2))
if let createdId = createdObject?.id {
var data = createdObject?.toDictionary()
data?["comment"] = "edited Swifty" // can set paid because the user is the business owner
MyAPI.order(id: createdId).request(.patch, json: data!).onSuccess() { response in
result = true
}.onFailure() { response in
dump(response) //error is here
}
}
}
Resources:
func sessionOrders( sessionId: String ) -> Resource {
return self
.resource("/sessions")
.child(sessionId)
.child("orders")
}
func order( id: String ) -> Resource {
return self
.resource("/orders")
.child(id)
}
Transformers:
self.configureTransformer("/sessions/*/orders", requestMethods: [.post, .put]) {
try Order(json: ($0.content as JSON)["data"])
}
self.configureTransformer("/orders/*") {
try Order(json: ($0.content as JSON)["data"])
}
I've managed to circle this by creating dictionary structures like:
let products: Array<Dictionary<String, Any>>?
products = json["products"].arrayValue.map({
["product": $0.dictionaryValue["product"]!.stringValue, "amount": $0.dictionaryValue["amount"]!.intValue]
})
But I live in a hell of downcasts if I need to modify anything:
var data = createdObject?.toDictionary()
data?["comment"] = "edited Swifty"
//if I want to modify the products...
var products = data?["products"] as! Array<Dictionary<String, Any>>
products[0]["amount"] = 4
data?["products"] = products
How can I send those original JSON arrays with Siesta? They're really easy to modify and read! I've browsed the siesta docs and github issues with no success...
Your problem is a mismatch between SwiftyJSON and Foundation’s JSONSerialization; Siesta just happens to be in the middle of it.
InvalidJSONObject is Siesta telling you that Foundation doesn’t understand the thing you gave it — which would be the value returned by your toDictionary() method. Most of the things in that dictionary look fine: strings, ints, a float. (Careful about using float for money, BTW.)
The culprit is that products array: it’s [JSON], where JSON is a SwiftyJSON type that Foundation doesn’t know what to do with. You should be in the clear if you turn the JSON values back into simple dictionaries:
dictionary["products"] = (products ?? []).map { $0.dictionaryObject }
If that doesn’t do it, or if you need to diagnose a similar error in the future, remove all the values from the offending dictionary and then add them back in one at a time to see which one is tripping up JSONSerialization.