android - org.json.JSONObject 无法转换为 com.parse.ParseGeoPoint

Question

private class MyObject {
        private String itemName;
        private int itemPrice;
        private ParseGeoPoint location;
        private MyObject(JSONObject obj) {
            try {
                itemName = obj.getString("Item").toLowerCase().trim();
                itemPrice = obj.getInt("Price");
                location = (ParseGeoPoint) obj.get("Location");
            } catch (Exception e) {
                Utility.showMessage(e.getMessage(), "Oops!", SalesReportActivity.this);
            }
        }
        public String toString() {
            return "Name: " + itemName + "\n" +
                   "Price: " + itemPrice;
        }
    }

对于上面的代码，Android 给出了上面的异常。我也试过 getJSONObject() 但结果是一样的。我该怎么办？

Answer 1

obj.get("Location")返回JSONObject，所以先得到Location来自 obj 的 JSONObject和两个latitude和 longitude值(value)观:

            JSONObject jsonLocation = obj.getJSONObject("Location");
            double latitude=jsonLocation.getDouble("latitude");
            double longitude=jsonLocation.getDouble("longitude");   
            location=new ParseGeoPoint(latitude, longitude)