如何使用Swift代码4

问题描述

我有这个JSON响应，需要在Swift 4上解码，但我只需要其中的某些属性。我只想获取Game EventTypes，并仅注册timestamp，legendPlayed，gameLength和“ Kills”（如果存在于游戏事件下）的数量。所以总的来说，我只希望时间戳，legendPlayed，gameLength和杀死游戏（如果存在），而不是会话或关卡或其他任何内容。如何构造模型和使用JSON Decoder进行解析？

[
   {
       "uid": "6774478804953216437","player": "Yungblem6","timestamp": 1598780938,"eventType": "Session","event": {
           "action": "join"
       }
   },{
       "uid": "6774478804953216437","timestamp": 1598778237,"event": {
           "action": "leave","sessionDuration": 174
       }
   },"timestamp": 1598777637,"eventType": "Level","event": {
           "newLevel": 182
       }
   },"eventType": "Game","xpProgress": 0,"gameLength": 10,"legendPlayed": "Wraith","rankScoreChange": "0","event": []
   },"timestamp": 1598776978,"xpProgress": 2880,"gameLength": 12,"event": [
           {
               "value": 3,"key": "kills","name": "Kills"
           }
       ]
   },"timestamp": 1598776198,"xpProgress": 360,"gameLength": 2,"event": [
           {
               "value": 1,"timestamp": 1598767798,"timestamp": 1598767737,"xpProgress": 4680,"gameLength": 24,"event": [
           {
               "value": 4,"name": "Kills"
           }
       ]
   }
]

解决方法

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json swift4