i've been working with swift app. im stuck at parsing multiple data as an array, here's my json
{
"error":0,
"success":1,
"kode_keranjang":"2",
"kode_produk":"1",
"kode_pelanggan":"USR-6cs42",
"jumlah":"1",
"nama_produk":"MacBook 2015",
"gambar":"MacBook.jpg",
"harga":"2000000",
"message":"Berhasil"
}
{
"error":0,
"success":1,
"kode_keranjang":"3",
"kode_produk":"2",
"kode_pelanggan":"USR-6cs42",
"jumlah":"1",
"nama_produk":"iPhone 6s",
"gambar":"iPhone",
"harga":"12000000",
"message":"Berhasil"
}
how can i get nama_produk as an array in swift? so i can populate it in my tableview cell
here's my swift
let myUrl = NSURL(string: "http://xxxxxxxx.com/produk.php");
let request = NSMutableURLRequest(URL:myUrl!);
request.HTTPMethod = "POST";// Compose a query string
let postString = "produkid="+produkid!+"&kat="+kat!+"";
request.HTTPBody = postString.dataUsingEncoding(NSUTF8StringEncoding);
let task = NSURLSession.sharedSession().dataTaskWithRequest(request) {
data, response, error in
if error != nil
{
print("error=\(error)")
return
}
// You can print out response object
print("response = \(response)")
// Print out response body
let responseString = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("responseString = \(responseString)")
//Let's convert response sent from a server side script to a NSDictionary object:
do {
let myJSON = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as? NSDictionary
if let parseJSON = myJSON {
// Now we can access value of First Name by its key
let nama_produk = parseJSON["nama_produk"] as? NSArray
let status = parseJSON["success"] as? Int
if(status == 1){
print (nama_produk);
}
else{
// let statusnya = "error";
return;
}
}
} catch {
print(error)
}
}
task.resume()
in this line
let nama_produk = parseJSON["nama_produk"] as? NSArray
print (nama_produk);
i create nama_produk as array, then i try print it, but it empty not showing data.
then i wanna add nama_produk array in my cell like this
var nama_produk_array = [""+nama_produk+""]
cell.namaproduk.text = nama_produk_array[indexPath.row]
how can i parse json into array?
please somebody
As far as i can understand you have an array of dictionaries and want to extract nama_produk
fields into the array. Here is the safe way to do it in Swift 3, Xcode 8 :
var jsonString1 =
"{\"error\":0,\"success\":1,\"kode_keranjang\":\"2\",\"kode_produk\":\"1\",\"kode_pelanggan\":\"USR-6cs42\",\"jumlah\":\"1\",\"nama_produk\":\"MacBook 2015\",\"gambar\":\"MacBook.jpg\",\"harga\":\"2000000\",\"message\":\"Berhasil\"}"
var jsonString2 =
"{\"error\":0,\"success\":1,\"kode_keranjang\":\"3\",\"kode_produk\":\"2\",\"kode_pelanggan\":\"USR-6cs42\",\"jumlah\":\"1\",\"nama_produk\":\"iPhone 6s\",\"gambar\":\"iPhone\",\"harga\":\"12000000\",\"message\":\"Berhasil\"}"
var jsonString = "[" + jsonString1 + "," + jsonString2 + "]"
var data = jsonString.data(using: .utf8)!
do {
if let json = try JSONSerialization.jsonObject(with: data, options : .allowFragments) as? [Dictionary<String,Any>]
{
let array = json
.filter{ $0["success"] as? Int == 1}
.flatMap{$0["nama_produk"] as? String}
print(array) // ==> ["MacBook 2015", "iPhone 6s"]
} else {
print("bad json")
}
} catch let error as NSError {
print(error)
}
jsonString
is possible json => the array of 2 dictionaries jsonString1
and jsonString2
flatMap
takes care of a failed casts of $0["nama_produk"]
to String
, that may unnecessary hide the problem of json you received, so you might consider using .map{ $0["nama_produk"] as! String }
.map{ $0["nama_produk"] as! String }
as Alexander suggested
What you provided isn't valid JSON. You must have a singular top-level element. Perhaps you meant to put it an Array, like so:
[
{
"error": 0,
"success": 1,
"kode_keranjang": "2",
"kode_produk": "1",
"kode_pelanggan": "USR-6cs42",
"jumlah": "1",
"nama_produk": "MacBook 2015",
"gambar": "MacBook.jpg",
"harga": "2000000",
"message": "Berhasil"
} {
"error": 0,
"success": 1,
"kode_keranjang": "3",
"kode_produk": "2",
"kode_pelanggan": "USR-6cs42",
"jumlah": "1",
"nama_produk": "iPhone 6s",
"gambar": "iPhone",
"harga": "12000000",
"message": "Berhasil"
}
]
Here's my improvement on serg_zhd 's answer :
import Foundation
var jsonFragment1 =
"{\"error\":0,\"success\":1,\"kode_keranjang\":\"2\",\"kode_produk\":\"1\",\"kode_pelanggan\":\"USR-6cs42\",\"jumlah\":\"1\",\"nama_produk\":\"MacBook 2015\",\"gambar\":\"MacBook.jpg\",\"harga\":\"2000000\",\"message\":\"Berhasil\"}"
var jsonFragment2 =
"{\"error\":0,\"success\":1,\"kode_keranjang\":\"3\",\"kode_produk\":\"2\",\"kode_pelanggan\":\"USR-6cs42\",\"jumlah\":\"1\",\"nama_produk\":\"iPhone 6s\",\"gambar\":\"iPhone\",\"harga\":\"12000000\",\"message\":\"Berhasil\"}"
var jsonString = "[" + jsonFragment1 + "," + jsonFragment2 + "]"
func parse(JSON json: String) throws -> [String]? {
guard let data = json.data(using: .utf8) else { return nil }
guard let rootArray = try JSONSerialization.jsonObject(with: data, options : []) as? [[String: Any]]
else { return nil }
return rootArray
.filter{ $0["success"] as? Int == 1}
.map{ $0["nama_produk"] as! String }
}
if let devices = try parse(JSON: jsonString) {
print(devices)
}
else {
print("error parsing the json")
}
You cantry it here .
struct Product: Decodable {
let namaProduk: String?
}
let JSON: String = """
[{
"error": 0,
"success": 1,
"kode_keranjang": "2",
"kode_produk": "1",
"kode_pelanggan": "USR-6cs42",
"jumlah": "1",
"nama_produk": "MacBook 2015",
"gambar": "MacBook.jpg",
"harga": "2000000",
"message": "Berhasil"
},
{
"error": 0,
"success": 1,
"kode_keranjang": "3",
"kode_produk": "2",
"kode_pelanggan": "USR-6cs42",
"jumlah": "1",
"nama_produk": "iPhone 6s",
"gambar": "iPhone",
"harga": "12000000",
"message": "Berhasil"
}]
"""
if let jsonData = JSON.data(using: .utf8) {
let decoder = JSONDecoder()
decoder.keyDecodingStrategy = .convertFromSnakeCase
do {
let products: [Product] = try decoder.decode([Product].self, from: jsonData)
let namaProduks: [String] = products.compactMap { $0.namaProduk }
print(namaProduks) // ["MacBook 2015", "iPhone 6s"]
} catch {
print(error) // handle the error
}
}
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