我之前的问题是"org.json.JSONObject无法转换为JSONArray">
所以我更改了这个JSONArray stationsJsonArray=newJSONArray(stations JsonString(；到这个JSONObject stationsJsonObject=新的JSONObject(stationsJson字符串(；
基于这个线程中给出的答案，我的第一个问题得到了解决
它修复了最初的问题，但现在我得到了这个问题，JSONObject中的getJSONObject(java.lang.String(不能应用于(int(。我知道只有字符串值可以传递到JSONObject中，但这曾经是一个JSONArray，所以我应该如何使用和一个数组，而不会在前一个线程中引发Json Exception。
老实说，我现在不知道怎么解决这个问题。如有任何帮助，我们将不胜感激。
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);
}
}
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"
}
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");