android - 解析 google place api json

Question

我是 android 开发的新手。在我的应用程序中，我使用 google place api 从地址获取纬度和经度。但是我一直在解析 json，因为我不知道如何解析这种 json。

JSON

{
    "results": [
        {
            "address_components": [
                {
                    "long_name": "Kurla West",
                    "short_name": "Kurla West",
                    "types": [
                        "sublocality_level_2",
                        "sublocality",
                        "political"
                    ]
                },
                {
                    "long_name": "Mumbai",
                    "short_name": "Mumbai",
                    "types": [
                        "locality",
                        "political"
                    ]
                },
                {
                    "long_name": "Mumbai Suburban",
                    "short_name": "Mumbai Suburban",
                    "types": [
                        "administrative_area_level_2",
                        "political"
                    ]
                },
                {
                    "long_name": "Maharashtra",
                    "short_name": "MH",
                    "types": [
                        "administrative_area_level_1",
                        "political"
                    ]
                },
                {
                    "long_name": "India",
                    "short_name": "IN",
                    "types": [
                        "country",
                        "political"
                    ]
                }
            ],
            "formatted_address": "Kurla West, Mumbai, Maharashtra, India",
            "geometry": {
                "bounds": {
                    "northeast": {
                        "lat": 19.0894645,
                        "lng": 72.89236650000001
                    },
                    "southwest": {
                        "lat": 19.0587919,
                        "lng": 72.87059769999999
                    }
                },
                "location": {
                    "lat": 19.0707532,
                    "lng": 72.8781322
                },
                "location_type": "APPROXIMATE",
                "viewport": {
                    "northeast": {
                        "lat": 19.0894645,
                        "lng": 72.89236650000001
                    },
                    "southwest": {
                        "lat": 19.0587919,
                        "lng": 72.87059769999999
                    }
                }
            },
            "types": [
                "sublocality_level_2",
                "sublocality",
                "political"
            ]
        }
    ],
    "status": "OK"
}

我试过的代码。

jsonObject = new JSONObject(response);

                            if (jsonObject.get("results") instanceof JSONObject) {


                            } else if (jsonObject.get("results") instanceof JSONArray) {
                                jsonArray = jsonObject.getJSONArray("results");

                                for (int j = 0; j < jsonArray.length(); j++) {
                                    jsonObject = jsonArray.getJSONObject(i);

                                    latitude = jsonObject.getJSONObject("location").getDouble("lat");
                                }
                            }



                        } catch (JSONException f) {

                            Log.e("Json exception", f.getMessage());


                        }

异常

No value for location

请帮我解析这个json，谢谢

Answer 1

你忘了几何

jsonArray = jsonObject.getJSONArray("results");
for (int j = 0; j < jsonArray.length(); j++) {
jsonObject = jsonArray.getJSONObject(i); 

latitude=jsonObject.getJSONObject("geometry").getJSONObject("location").getDouble("lat");
}