CODEWITHSUNDEEP
androidjson
Nate
Nate

Reputation: 412

Having trouble accessing object in JSON

I am trying to access the "display_name" object within the following JSON and I cannot seem to grab it. The example JSON is below. 

{
  "streams": [
    {
      "broadcaster": "fme",
      "_id": 5019229776,
      "preview": "http://static-cdn.jtvnw.net/previews-ttv/live_user_zisss-320x200.jpg",
      "game": "Diablo III",
      "channel": {
        "mature": null,
        "background": "http://static-cdn.jtvnw.net/jtv_user_pictures/zisss-channel_background_image-06a9d8c1113e5b45.jpeg",
        "updated_at": "2013-03-04T05:27:27Z",
        "_id": 31795858,
        "status": "Barb sets giveaway and making 500m DH set... Join Zisspire, earn Zeny, collect prizes!",
        "logo": "http://static-cdn.jtvnw.net/jtv_user_pictures/zisss-profile_image-502d7c865c5e3a54-300x300.jpeg",
        "teams": [ ],
        "url": "http://www.twitch.tv/zisss",
        "display_name": "Zisss",
        "game": "Diablo III",
        "banner": "http://static-cdn.jtvnw.net/jtv_user_pictures/zisss-channel_header_image-997348d7f0658115-640x125.jpeg",
        "name": "zisss",
        "video_banner": null,
        "_links": {
          "chat": "https://api.twitch.tv/kraken/chat/zisss",
          "subscriptions": "https://api.twitch.tv/kraken/channels/zisss/subscriptions",
          "features": "https://api.twitch.tv/kraken/channels/zisss/features",
          "commercial": "https://api.twitch.tv/kraken/channels/zisss/commercial",
          "stream_key": "https://api.twitch.tv/kraken/channels/zisss/stream_key",
          "editors": "https://api.twitch.tv/kraken/channels/zisss/editors",
          "videos": "https://api.twitch.tv/kraken/channels/zisss/videos",
          "self": "https://api.twitch.tv/kraken/channels/zisss",
          "follows": "https://api.twitch.tv/kraken/channels/zisss/follows"
        },
        "created_at": "2012-07-01T21:09:58Z"
      },
      "name": "live_user_zisss",
      "viewers": 775,
      "_links": {
        "self": "https://api.twitch.tv/kraken/streams/zisss"
      }
    }
  ],
  "_links": {
    "summary": "https://api.twitch.tv/kraken/streams/summary",
    "followed": "https://api.twitch.tv/kraken/streams/followed",
    "next": "https://api.twitch.tv/kraken/streams?channel=zisss%2Cvoyboy&game=Diablo+III&limit=100&offset=100",
    "featured": "https://api.twitch.tv/kraken/streams/featured",
    "self": "https://api.twitch.tv/kraken/streams?channel=zisss%2Cvoyboy&game=Diablo+III&limit=100&offset=0"
  }

I start with:

JSONArray array = getJSONArray("streams");
JSONObject object = array.getJSONObject(4); // channel is entry 4 in array
String name = object.getString("display_name");

I'm not sure what I'm doing wrong here. With a more filled out JSON with multiple "channel" entries, I'm not sure how to handle it. I was thinking something like this?

String[] name = new String[array.length()];
JSONArray array = getJSONArray("streams");
for(int i = 0; i < array.length(); i++) {
    if(array[i].equals("channel")
        name[i] = array.getString("display_name");

I'm sure that last part is crude, and probably quite off from what it should be, but I'm not sure how to handle this.

Upvotes: 0

Views: 119

Answers (2)

Rarw
Rarw

Reputation: 7663

Channel is not the 4th item in your JSONArray but a nested object within the first. You have to be careful to follow the [] and {} brackets when parsing JSON because JSONObjects can contain multiple nested sub-objects and arrays. 

JSONObject mainJsonObject = new JSONObject(json_string);
JSONArray array = mainJsonObject.getJSONArray("streams");
JSONObject channelObject = array.getJSONObject(0).getJSONOBject("channel")
String displayName = channelObject.getString("display_name");

Upvotes: 1

Parnit
Parnit

Reputation: 1032

Based on your JSON you have to do the following

JSONArray array = getJSONArray("streams");
JSONObject object = array.getJSONObject(0); 
object = object.getJSONOBject("channel")
String name = object.getString("display_name");

The first item in you json array holds the channel object which contains the data you are looking for.

Upvotes: 1

Related Questions