android - 用于动态 json 键值的 Gson 解析器类 - Android

Question

我使用 gson 库来解析 json 响应。它运作良好。现在我遇到了问题。

我从 webservice 得到以下响应。 json键值不是静态的，会动态变化。

如何编写解析器类来解析以下响应。

格式化的 JSON:

{
    "meta": {
        "code": 201,
        "dataPropertyName": "activity",
        "currentTime": "2014-02-05 06:15:04",
        "listedCount": "2"
    },
    "activity": [
        {
            "comments": [
                {
                    "raja": {
                        "type": "Liked",
                        "userPhoto": "663.png",
                        "userId": "74",
                        "userName": {
                            "1_0": "longjump"
                        },
                        "postOwner": "you",
                        "postDetails": {
                            "471": {
                                "postImage": "972.png",
                                "postId": "471",
                                "postType": "1"
                            }
                        },
                        "dateTime": "2014-02-05 05:24:56",
                        "sameOwner": "1"
                    }
                }
            ]
        },
        {
            "follow": [
                {
                    "you": {
                        "type": "follow",
                        "followByUserName": {
                            "0_0": "olivepop",
                            "1_0": "yadidroy",
                            "2_0": "chitra"
                        },
                        "followUserName": "you",
                        "followByUserPhoto": "242.png",
                        "followUserPhoto": "953.png",
                        "dateTime": "2014-01-09 06:50:42"
                    }
                }
            ]
        }
    ],
    "notifications": [
        "Activities has been retrieved successfully"
    ]
}

Answer 1

使用这个解析器类

Meta meta = new Meta();

    ArrayList<Activity> activity = new ArrayList<ActivityParser.Activity>();

    ArrayList<String> notifications = new ArrayList<String>();

    public class Meta
    {
        String code,dataPropertyName,currentTime,listedCount;
    }

    public class Activity
    {
        ArrayList<HashMap<String, CommentsItem>> comments = new ArrayList<HashMap<String,CommentsItem>>();

        public class CommentsItem
        {
            String type,userPhoto,userId,postOwner,dateTime,sameOwner;
            HashMap<String, String> userName = new HashMap<String,String>();
            HashMap<String, PostDetails> postDetails = new HashMap<String,PostDetails>();
            public class PostDetails
            {
                String postImage,postId,postType;
            }

        }

        ArrayList<HashMap<String, FollowItem>> follow = new ArrayList<HashMap<String,FollowItem>>();

        public class FollowItem
        {
            String type,followUserName,followByUserPhoto,followUserPhoto,dateTime;
            HashMap<String, String> followByUserName = new HashMap<String,String>();
        }
    }