swift - 如何在 swift 3.0 中从 google api 获取时间值

Question

这里我传递了源和目的地的纬度和经度，我得到了响应，但如何从响应中获取特定值。我是 ios 开发人员的新手。我像这样在 google API 中传递纬度和经度

  let travelTimeString : NSString = "https://maps.googleapis.com/maps/api/directions/json?origin=19.120912,72.845121&destination=19.110162,72.853951&sensor=false" as NSString

    print("travelTimeString",travelTimeString)
    let urlStr  = travelTimeString.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)
    let searchURL: NSURL = NSURL(string: urlStr! as String)!
    do {
        let newdata = try Data(contentsOf: searchURL as URL)
        if let responseDictionary = try JSONSerialization.jsonObject(with: newdata, options: []) as? NSDictionary {
            print("travelTimeString",responseDictionary)


        }} catch {
    }

i got response like this那么如何获取持续时间的值(routes-->legs-->duration)

Answer 1

您可以使用任何外部库，或手动解析，例如:

 if let routes = responseDictionary["routes"] as? NSDictionary {
     if let legs = routes["legs"] as? NSDictionary {
        // etc
     }
 }