解析为对象而不是数组时出现Json错误:JSONObject中的getJSONObject(java.lang.String)无法应用于(int)

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【中文标题】解析为对象而不是数组时出现Json错误:JSONObject中的getJSONObject(java.lang.String)无法应用于(int)【英文标题】:Json Error when parsing as object rather than array :getJSONObject (java.lang.String) in JSONObject cannot be applied to (int) 【发布时间】:2019-04-23 10:25:43 【问题描述】:

我之前的问题是“org.json.JSONObject 无法转换为 JSONArray”

所以我改变了这个 JSONArray stationJsonArray = newJSONArray(stationsJsonString);到这个 JSONObject stationJsonObject = new JSONObject(stationsJsonString);

根据this thread 中给出的答案,我的第一个问题已解决

这解决了最初的问题,但是现在我得到了这个问题 getJSONObject (java.lang.String) in JSONObject cannot be applied to (int)。我知道只有字符串值可以传递给 JSONObject 但这曾经是一个 JSONArray 所以我将如何使用一个数组而不导致在前一个线程中抛出 Json 异常。

老实说,我现在不知道如何解决这个问题。任何和所有的帮助将不胜感激。

这是我的代码:

private class AsyncTaskGetMareker extends AsyncTask<String , String, JSONObject> 
        @Override
        protected void onPreExecute() 
            super.onPreExecute();
        

        @Override
        protected JSONObject doInBackground(String... strings) 
            String stationsJsonString = getJSONFromAssets();
            try 
                JSONObject stationsJsonObject = new JSONObject(stationsJsonString);
                return stationsJsonObject;
             catch (JSONException e) 
                e.printStackTrace();
            
            //This will only happen if an exception is thrown above:
            return null;
        

        protected void onPostExecute (JSONObject result)
            if (result !=null)
                for (int i =0; i <result.length(); i++)
                    JSONObject jsonObject= null;
                    try 
                        jsonObject= result.getJSONObject(i);
                        String name=jsonObject.getString("name");
                        String lat=jsonObject.getString("lat");
                        String lang=jsonObject.getString("lang");

                        drawMarker(new LatLng(Double.parseDouble(lat),
                                Double.parseDouble(lang)), name);

                     catch (JSONException e) 
                        e.printStackTrace();
                    
                
            

        

        private void drawMarker(LatLng point, String name) 
            MarkerOptions markerOptions = new MarkerOptions();
            markerOptions.position(point);
            markerOptions.snippet(name);
            mMap.addMarker(markerOptions);
        
    

还有 Json 文件:


   "predictions" : [
      
         "description" : "GAME Paisley, High Street, Paisley, UK",
         "id" : "d4fafbac99296d0a545170bb9af984e6251ac917",
         "matched_substrings" : [
            
               "length" : 4,
               "offset" : 0
            
         ],
         "place_id" : "ChIJN0z6gTdJiEgREKQBicnWcAs",
         "reference" : "ChIJN0z6gTdJiEgREKQBicnWcAs",
         "structured_formatting" : 
            "main_text" : "GAME Paisley",
            "main_text_matched_substrings" : [
               
                  "length" : 4,
                  "offset" : 0
               
            ],
            "secondary_text" : "High Street, Paisley, UK"
         ,
         "terms" : [
            
               "offset" : 0,
               "value" : "GAME Paisley"
            ,
            
               "offset" : 14,
               "value" : "High Street"
            ,
            
               "offset" : 27,
               "value" : "Paisley"
            ,
            
               "offset" : 36,
               "value" : "UK"
            
         ],
         "types" : [ "establishment" ]
      ,
      
         "description" : "GAME Glasgow Union Street, Union Street, Glasgow, UK",
         "id" : "9579c1d2df7575a2eb479ccd987cf29ab0ab9c6e",
         "matched_substrings" : [
            
               "length" : 4,
               "offset" : 0
            
         ],
         "place_id" : "ChIJ2YlAjJ5GiEgRu7aBLOFlkkc",
         "reference" : "ChIJ2YlAjJ5GiEgRu7aBLOFlkkc",
         "structured_formatting" : 
            "main_text" : "GAME Glasgow Union Street",
            "main_text_matched_substrings" : [
               
                  "length" : 4,
                  "offset" : 0
               
            ],
            "secondary_text" : "Union Street, Glasgow, UK"
         ,
         "terms" : [
            
               "offset" : 0,
               "value" : "GAME Glasgow Union Street"
            ,
            
               "offset" : 27,
               "value" : "Union Street"
            ,
            
               "offset" : 41,
               "value" : "Glasgow"
            ,
            
               "offset" : 50,
               "value" : "UK"
            
         ],
         "types" : [ "establishment" ]
      ,
      
         "description" : "Game, Saint Enoch Square, Glasgow, UK",
         "id" : "582edc64f3d6654d8ff9a8da364c37a8e0544102",
         "matched_substrings" : [
            
               "length" : 4,
               "offset" : 0
            
         ],
         "place_id" : "ChIJq2yljp5GiEgRpsnAfUFKGEA",
         "reference" : "ChIJq2yljp5GiEgRpsnAfUFKGEA",
         "structured_formatting" : 
            "main_text" : "Game",
            "main_text_matched_substrings" : [
               
                  "length" : 4,
                  "offset" : 0
               
            ],
            "secondary_text" : "Saint Enoch Square, Glasgow, UK"
         ,
         "terms" : [
            
               "offset" : 0,
               "value" : "Game"
            ,
            
               "offset" : 6,
               "value" : "Saint Enoch Square"
            ,
            
               "offset" : 26,
               "value" : "Glasgow"
            ,
            
               "offset" : 35,
               "value" : "UK"
            
         ],
         "types" : [ "establishment" ]
      ,
      
         "description" : "GAME Glasgow King's Inch Road, King's Inch Road, Glasgow, UK",
         "id" : "b60dbbc529f25226dfee4c05c80de8e92137588d",
         "matched_substrings" : [
            
               "length" : 4,
               "offset" : 0
            
         ],
         "place_id" : "ChIJv2Te_ENPiEgRknxQydZhR8Q",
         "reference" : "ChIJv2Te_ENPiEgRknxQydZhR8Q",
         "structured_formatting" : 
            "main_text" : "GAME Glasgow King's Inch Road",
            "main_text_matched_substrings" : [
               
                  "length" : 4,
                  "offset" : 0
               
            ],
            "secondary_text" : "King's Inch Road, Glasgow, UK"
         ,
         "terms" : [
            
               "offset" : 0,
               "value" : "GAME Glasgow King's Inch Road"
            ,
            
               "offset" : 31,
               "value" : "King's Inch Road"
            ,
            
               "offset" : 49,
               "value" : "Glasgow"
            ,
            
               "offset" : 58,
               "value" : "UK"
            
         ],
         "types" : [ "establishment" ]
      ,
      
         "description" : "GAME, Cowglen Road, Glasgow, UK",
         "id" : "86a4ed10b3b9b609f68533f1c47dc8f9ae5d2aee",
         "matched_substrings" : [
            
               "length" : 4,
               "offset" : 0
            
         ],
         "place_id" : "ChIJT3vEiYRIiEgR4EIqP8jmL6o",
         "reference" : "ChIJT3vEiYRIiEgR4EIqP8jmL6o",
         "structured_formatting" : 
            "main_text" : "GAME",
            "main_text_matched_substrings" : [
               
                  "length" : 4,
                  "offset" : 0
               
            ],
            "secondary_text" : "Cowglen Road, Glasgow, UK"
         ,
         "terms" : [
            
               "offset" : 0,
               "value" : "GAME"
            ,
            
               "offset" : 6,
               "value" : "Cowglen Road"
            ,
            
               "offset" : 20,
               "value" : "Glasgow"
            ,
            
               "offset" : 29,
               "value" : "UK"
            
         ],
         "types" : [ "establishment" ]
      
   ],
   "status" : "OK"

【问题讨论】:

【参考方案1】:

注意:

    JsonObject getJsonObject(String name) //parameter type should be String

    for (int i =0; i <result.length(); i++)
                        JSONObject jsonObject= null;
                        try 
                            jsonObject= result.getJSONObject(i);//but you pass an int
                            String name=jsonObject.getString("name");

【讨论】:

我知道,但是如果没有我链接的线程中显示的 JSONExeption,我该如何使用 JSONArray 来做到这一点

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