How to play local song file from local JSON to the app? - ios

Question

I have a music app which have a table view with custom cell, which have labels and info which already in my JSON file:
[
{
"loop_name" : "Come Back",
"Instrument" :"Guitar",
"loop_link" : "local link to wav file", (need to figure out)
"producer" : "Bernulli"
}
]
The main problem is, I don't know how to implement local audio file into JSON file and after this load this data to my app. Here is my custom cell with labels (which already in JSON file and button, which should play songs from JSON file in each of the row in table view):
import UIKit
import AVFoundation
protocol CustomSongDelegate: AnyObject {
func btnUseTap(cell: CustomLoopsCell)
}
class CustomSongCell: UITableViewCell {
weak var delegate: CustomSongDelegate?
var songs: [String] = []
var audioPlayer = AVAudioPlayer()
#IBOutlet weak var loopNameLabel: UILabel!
#IBOutlet weak var producerLabel: UILabel!
#IBOutlet weak var instrumentLabel: UILabel!
#IBOutlet weak var playButtonOutlet: UIButton!
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
#IBAction func btnUse(_ sender: Any) {
delegate?.btnUseTap(cell: self)
}
}

Answer 1

Get the loop local file's name from your JSON file and you may use it to play your audio like that:
var player: AVAudioPlayer!
func playLoop(loopLocalFileName: String) {
let url = Bundle.main.url(forResource: loopLocalFileName, withExtension: "wav") // you should check it for errors
player = try! AVAudioPlayer(contentsOf: url!) // of course you should catch the error and deal with it...
player.play()
}
In order to parse your JSON more easily try using a struct like this:
struct Loop: Codable{
var name: String
var instrumentName: String
var localFileName: String
var producerName: String
enum CodingKeys: String, CodingKey {
case name = "loop_name"
case instrumentName = "Instrument"
case loopLocalFileName = "loop_link"
case producerName = "producer"
}
}