Question

我是Kotlin的新手，我想创建一个简单的JSON对象，我在Swift中做了相同的代码，没有任何问题。但是现在在JSON对象中，我有list个Double，在打印JSON之后，我看到列表被"包围了，因为它是一个字符串值。我如何摆脱那些"？

所需：

{
    "title": "need help moving",
    "description": "moving stuff from apartment",
    "points": 10,
    "loc" : { "coordinates" : [0,0], "type" : "Point" }
}

我为此编写了以下代码：

到目前为止我的代码：

val loc = listOf(22.4577654, 22.4577654)
val locationObject = JSONObject()
locationObject.put("coordinates", loc)
locationObject.put("coor", loc as Any)
locationObject.put("type" ,"Point")
val params = JSONObject()

params.put("title", "$taskTitle")
params.put("description", "$taskDescription")
params.put("points", pointsEditText.text)
params.put("loc", locationObject)

但是现在我的JSON看起来像这样：

当前输出：

{  
   "title":"This is Android Task",
   "description":"This is Android Task I made via the Android App :D",
   "points":"5",
   "loc":{  
      "coordinates":"[22.4577654, 22.4577654]",
      "coor":"[22.4577654, 22.4577654]",
      "type":"Point"
   }
}

如果您建议解决方案而不需要安装其他库，那就更好了：）

谢谢

Answer 1

您尚未将列表作为JsonArray添加，而是将对象添加到json。相反，您需要使用给定的JSONArray。

val array = JSONArray()
array.put(22.4577654)
array.put(22.4577654)

val locationObject = JSONObject()
locationObject.put("coordinates", array)
locationObject.put("coor", loc as Any)
locationObject.put("type" ,"Point")
val params = JSONObject()

params.put("title", "$taskTitle")
params.put("description", "$taskDescription")
params.put("points", pointsEditText.text)
params.put("loc", locationObject)

Answer 2

我认为您应该坚持使用这种格式。

{
  "title": "need help moving",
  "description": "moving stuff from apartment",
  "points": 5,
  "loc": {
    "latitude": 22.4577654,
    "longitude": 22.4577654,
    "type": "Point"
  }
}

您的代码：

val loc = doubleArrayOf(22.4577654, 22.4577654)
val locationObject = JSONObject()
locationObject.put("latitude", loc[0])
locationObject.put("longitude", loc[1])
locationObject.put("type" ,"Point")
val params = JSONObject()

params.put("title", "$taskTitle");
params.put("description", "$taskDescription")
params.put("points", pointsEditText.text.toDouble())
params.put("loc", locationObject)

Kotlin JSON Double List，因为值是字符串

2 个答案: