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Android Android Lists and Adapters (2015) Updating the Data Model Using JSONArray

Sai Krishna Katkam
PLUS
Sai Krishna Katkam
Courses Plus Student 1,946 Points
Posted by Sai Krishna Katkam
Sai Krishna Katkam
Courses Plus Student 1,946 Points

use the Log.i() method (with "CodeChallenge" as the tag) to write the show title.

Challenge 2 The data in the file data.json has been loaded into a JSONObject named jsonData. Using data.json as your guide, create a JSONArray object named jsonShows and set it to the array of shows from data.json using the jsonData object.

CodeChallenge.java 
// JSONObject 'jsonData' was loaded from data.json
JSONArray jsonShows = jsonData.getJSONArray("shows");
for(int i=0; i<= jsonShows.length(); i++) {
  JSONObject show=jsonShows.getJSONObject(i);
  Log.i("CodeChallenge", show.getString("title"));
}
data.json 
{
    "name":"Netflix Playlist",
    "shows":[
        {
            "title":"Doctor Who",
            "season":8,
            "episode":3
        },
        {
            "title":"Arrow",
            "season":1,
            "episode":10
        },
        {
            "title":"Portlandia",
            "season":4,
            "episode":5
        }
    ]
}

1 Answer

Rares Conea
PLUS
Rares Conea
Courses Plus Student 15,000 Points
Rares Conea
Rares Conea
Courses Plus Student 15,000 Points

Hi,

Index of an array starts from 0. In your for loop you are iterating over the last value stored in jsonShows. Change <= to < and you won't get a NullPointerException anymore.