[英]how to print track data (swift)
So I have the following code printing out the following所以我有以下代码打印出以下内容
[DRN1.Data(track: DRN1.Trackinfo(title: "Charly\'s Ballad (Original Mix)", artist: "Castle Queenside", imageurl: "covers.drn1.com.au/az_B1017197_Disc 1 Traxsource Nu Disco & Indie Dance_Castle Queenside.jpg"))]
However when I go to write然而当我去写
print(nowplaying.data.track.title)
I get errors and it won't even attempt to load the swift app我收到错误,它甚至不会尝试加载 swift 应用程序
struct Nowplayng: Decodable{
let data: [Data]
}
struct Data: Decodable{
let track: Trackinfo
}
struct Trackinfo: Decodable {
let title: String
let artist: String
let imageurl: String
}
works作品
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
let jsonURLString = "https://api.drn1.com.au/station/playing"
guard let feedurl = URL(string: jsonURLString) else { return }
URLSession.shared.dataTask(with: feedurl) { (data,response,err)
in
guard let data = data else { return }
do{
let nowplaying = try JSONDecoder().decode(Nowplayng.self, from: data)
print(nowplaying.data)
}catch let jsonErr{
print("error json ", jsonErr)
}
// let dataAsString = String(data:data, encoding: .utf8)
// print(dataAsString)
}.resume()
}
does not work不起作用
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
let jsonURLString = "https://api.drn1.com.au/station/playing"
guard let feedurl = URL(string: jsonURLString) else { return }
URLSession.shared.dataTask(with: feedurl) { (data,response,err)
in
guard let data = data else { return }
do{
let nowplaying = try JSONDecoder().decode(Nowplayng.self, from: data)
print(nowplaying.data.track.title)
}catch let jsonErr{
print("error json ", jsonErr)
}
// let dataAsString = String(data:data, encoding: .utf8)
// print(dataAsString)
}.resume()
}
data
is an array you need to loop over it data
是一个需要循环遍历的数组
nowplaying.data.forEach {
print($0.track.title)
}
If you care about the first item do如果您关心第一项,请执行
if let item = nowplaying.data.first {
print(item.track.title)
}
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