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

Posted by MUZ140820 Immaculate Ncube
MUZ140820 Immaculate Ncube
4,611 Points

i need help with JSONArray

Finally, write a 'for' loop that loops through jsonShows. In each step of the loop, use getJSONObject(int index) to get a JSONObject from the array. Then use the Log.i() method (with "CodeChallenge" as the tag) to write the show title.

CodeChallenge.java 
JSONArray jsonShows = jsonData.getJSONArray("shows");
for (int i = 0 <jsonShows.length(); i++);

{
  JSONObject show = jsonShows.getJSONObject(i);
 String title = show.getString("title");
 Log.i("CodeChallenge", 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
        }
    ]
}

2 Answers

jenyufu
jenyufu
3,311 Points
jenyufu
jenyufu
3,311 Points

Here I fixed it for you, here is what went wrong: your for(conditional) line is wrong. Just two slight mistakes. Its suppose to look like this:

for (int i = 0; i < jsonShows.length(); i++)

yours was this:

for (int i = 0 <jsonShows.length(); i++);    //<-- you forgot the 'i'. And don't put the ";" at the end of the conditional.

Here is the entire snippet fixed, I tested it in the challenge and it completed:

JSONArray jsonShows = jsonData.getJSONArray("shows");
for (int i = 0; i < jsonShows.length(); i++) {
    JSONObject show = jsonShows.getJSONObject(i);
    String title = show.getString("title");
    Log.i("CodeChallenge", title);
}
Kristian Terziev
Kristian Terziev
28,449 Points
Kristian Terziev
Kristian Terziev
28,449 Points

I would love to help you, but please use the search before you post a new thread. This challenge has been explain numerous type by different users. Here are some examples:

https://teamtreehouse.com/forum/what-am-i-doing-wrong-109

https://teamtreehouse.com/forum/code-challenge-engine-cant-find-tag

https://teamtreehouse.com/forum/codechallenge-javalangnullpointerexception