Android studio--如何將字串資料存入JSONArray?

1.資料儲存於String json;

2.建立獨立物件類別LocaJSON.class，內含三種建構子形式，以及setter&getter方法(自己寫!)。
屬性依照自己所需編寫，下面只是舉例。

public class LocaJSON {

     String username;     

     String userid;     

     String longitude;     

     String latitude;     

     String date;     

     String time;     

     String massage;     

     String ap_ip;     

     String ap_ssid;     

     String ap_rssi;
    public LocaJSON(String username, String userid, String longitude, String latitude, String date, String time, String massage, String ap_ip, String ap_ssid, String ap_rssi) {
        this.username = username;        

        this.userid = userid;        

        this.longitude = longitude;       

        this.latitude = latitude;        

        this.date = date;        

        this.time = time;        

        this.massage = massage;       

        this.ap_ip = ap_ip;        

        this.ap_ssid = ap_ssid;        

        this.ap_rssi = ap_rssi;    }

    public LocaJSON() {
    }

    public LocaJSON(JSONObject jsonObject) {
        try {
            username=jsonObject.getString("username");            

            userid=jsonObject.getString("userid");            

            longitude=jsonObject.getString("longitude");            

            latitude=jsonObject.getString("latitude");            

            date=jsonObject.getString("date");           

            time=jsonObject.getString("time");            

            massage=jsonObject.getString("m_code");            

            ap_ip=jsonObject.getString("ap_ip");           

            ap_ssid=jsonObject.getString("ap_ssid");            

            ap_rssi=jsonObject.getString("ap_rssi");        

        } catch (JSONException e) {
            e.printStackTrace();        }

    }

3.藉由以下程式即可將字串轉存至JSONArray

locaJSONS = new ArrayList<>();

try{
    JSONArray jsonArray =new JSONArray(json);    

    jlength=jsonArray.length();    

    Log.d("資料數f ", String.valueOf(jlength));    

    for (int i = 0; i < jlength; i++) {
        JSONObject jsonObject = jsonArray.getJSONObject(i);        

        LocaJSON locaJSON = new LocaJSON(jsonObject);        

        locaJSONS.add(locaJSON);    

    }

    
}catch (JSONException e){
    Log.d("Fail 3",e.toString());

}

4.資料已存入locaJSONS中，可供運用。