如何检查 JSON 数组的 object 是否包含 Android Java 中具有特定名称的数字？

Question

I have this JSON array and I need to check every object of it if it has a "rain" number as 1st object does. How can I implement it in Java, Android? I am making an android app that needs to analyze if it rains someday.

 "daily": [
        {
            "dt": 1597730400,
            "sunrise": 1597705822,
            "sunset": 1597758442,
            "temp": {
                "day": 299.15,
                "min": 288.84,
                "max": 299.15,
                "night": 288.84,
                "eve": 298.91,
                "morn": 299.15
            },
            "feels_like": {
                "day": 291.47,
                "night": 287.34,
                "eve": 293.53,
                "morn": 291.47
            },
            "pressure": 997,
            "humidity": 27,
            "dew_point": 278.72,
            "wind_speed": 9.52,
            "wind_deg": 200,
            "weather": [
                {
                    "id": 500,
                    "main": "Rain",
                    "description": "light rain",
                    "icon": "10d"
                }
            ],
            "clouds": 100,
            "pop": 0.86,
            "rain": 1.03,
            "uvi": 4.86
        }

Answer 1

You would like to check if "rain" attribute is returned in the response.

To do so, follow these steps:

1. Create a class for the object in the JSON array.
2. Use Gson or any other JSON library in Android to convert the fetched JSON into the created class object.
3. Then check if rain is not null and if rain is not equal to 0 to confirm rain attribute is present in the JSON objects in the array.

Answer 2

String yourJSONString; //should hold the JSON you have 
JSONArray c = JSONArray(yourJSONString);
    for (int i = 0 ; i < c.length(); i++) {
        JSONObject obj = c.getJSONObject(i);
        if(obj.has("rain")){
          //object has "rain" property
        }
        else{
          //object doesnt have "rain" property
        }
    }