JSon异常没有“opening_hours”的价值

Question

我正在尝试获取opening_hours的值。我可以看到日志中的值，但是当我尝试从json获取它时，有一个json异常说“open_hours没有值” 这是json

"results" : [
      {

         "icon" : "https://maps.gstatic.com/mapfiles/place_api/icons/restaurant-71.png",
         "id" : "4b20e94074c34e7912f3b53b1fc9409730e57017",
         "name" : "Chicken & Pizza Hot Service",
         "opening_hours" : {
            "open_now" : true,
            "weekday_text" : []
         },
         "place_id" : "ChIJ_-_K26Kv2EcR8gAnIBZax5o",
         "rating" : 2.4,

         "scope" : "GOOGLE",
         "types" : [
            "meal_takeaway",
            "restaurant",
            "food",
            "point_of_interest",
            "establishment"
         ],
         "vicinity" : "32 Station Road, Belvedere"
      },
      {
         "icon" : "https://maps.gstatic.com/mapfiles/place_api/icons/restaurant-71.png",
         "id" : "4b17d2a5a90d4daaa8c8a3a283e2036fec21be08",
         "name" : "McDonald's",
         "opening_hours" : {
            "open_now" : true,
            "weekday_text" : []
         },

         "place_id" : "ChIJnbG7z56l2EcRzTTK1FgePRg",
         "price_level" : 1,
         "rating" : 3.7,

         "scope" : "GOOGLE",
         "types" : [ "restaurant", "food", "point_of_interest", "establishment" ],
         "vicinity" : "3, Cook Road, Dagenham"
      }

这是我的代码

  var rootobject:JSONObject= JSONObject(response)
                    var objectarray:JSONArray=rootobject.getJSONArray("results")
                    for(i in 0..objectarray.length()-1){
                        var part:JSONObject=objectarray.getJSONObject(i)

                        var timepart:JSONObject=part.getJSONObject("opening_hours")