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Android Build a Blog Reader Android App Getting Data from the Web Parsing Data Returned in JSON Format

drizzy drake
drizzy drake
Courses Plus Student 2,469 Points

I can't figure out why This isn't working. Please help

i've been looking at it for more than an hour but still can't see my mistake

// JSONObject 'jsonData' was loaded from data.json
String name = jsonData.getString("name");
String publisher = jsonData.getString("publisher");
String language = jsonData.getString("language");

JSONArray jsonBooks = jsonData.getJSONArray("books");
//JSONObject jsonBooks = new JSONObject("books");

for(int i = 0; i < jsonBooks.length(); i++){
  JSONObject jsonBook = jsonBooks.getJSONObject(i); //i tried int index

  String title = jsonBooks.getString("title");
  String pages = jsonBooks.getString("pages");
  Log.i(CodeChallenge, " "+title +" "+i+" "+ pages);

    "name":"Treehouse Book Series",
            "title":"HTML5 Foundations",
            "author":"Matt West",
            "title":"CSS3 Foundations",
            "author":"Ian Lunn",

1 Answer

Ken Alger
Ken Alger
Treehouse Teacher


A couple of things...

First, your creating a jsonBook object, and referencing jsonBooks in your attempts to get strings. That "s" on the end is creating an issue.

Second, in your line of code:

String pages = jsonBooks.getString("pages");

The data for pages is not a string it is an int, so we need to change that to:

int pages = jsonBooks.getInt("pages");

Thirdly, the formatting for your output to the log is not what the challenge engine is wanting. The instructions are calling for it to be formatted: Then use the 'Log.i()' method (with "CodeChallenge" as the tag) to write the book title, a comma, a space, and the number of pages. Ex. output: 'Book title 1, 300'.

That would look similar to:

Log.i("CodeChallenge", title + ", " + pages);

Hope that helps a bit, post back if it does not.

Happy coding,