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Android

Posted by Naveen Selvasekaran
Naveen Selvasekaran
825 Points

Question on JSON code challenge

This is my solution. I am not able to find out the problem. The error says "Bummer! Make sure you write each book to the log exactly as specified in the instructions." Any help?

String name = jsonData.getString("name");
String publisher = jsonData.getString("publisher");
String language  = jsonData.getString("language");
JSONArray jsonBooks = jsonData.getJSONArray("books");
for(int index=0;index<jsonBooks.length();index++){
        JSONObject jsonObject = jsonBooks.getJSONObject(index);   
        Log.i("CodeChallenge","book title"+jsonObject.getString("title")+", "+jsonObject.getInt("pages"));
}

4 Answers

Ernest Grzybowski
Ernest Grzybowski
Treehouse Project Reviewer

I believe you were at:

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

Step one:

String name = jsonData.getString("name");
String publisher = jsonData.getString("publisher");
String language  = jsonData.getString("language");

Step two:

JSONArray jsonBooks = jsonData.getJSONArray("books");

Step three:

for(int index=0;index<jsonBooks.length();index++){
        JSONObject jsonObject = jsonBooks.getJSONObject(index);   
        Log.i("CodeChallenge",jsonObject.getString("title")+", "+jsonObject.getInt("pages"));

}

So it seems that you just included an unnecessary:

"book title"+

Just take that out, and you are good to go. Keep coding!

James Barnett
James Barnett
39,199 Points
James Barnett
James Barnett
39,199 Points

It help to have a link to which code challenge you are stuck on

Naveen Selvasekaran
Naveen Selvasekaran
825 Points
Naveen Selvasekaran
Naveen Selvasekaran
825 Points

Yeah, thank you. I just added the text to give a label.

yuehwencheng
yuehwencheng
29,154 Points
yuehwencheng
yuehwencheng
29,154 Points

Hi, I'm on the same challenge and somehow can't get it done yet. Here're my codes which seem to be the same as the above answer:

String name = jsonData.getString("name");
String publisher = jsonData.getString("publisher");
String language = jsonData.getString("language");
JSONArray jsonBooks = jsonData.getJSONArray("books");
for (int i =0; i< jsonBooks.length(); i++){
JSONObject jsonBook = jsonBooks.getJSONObject(i);
String title = jsonBook.getString("title");
String author = jsonBook.getString("author");
String pages = jsonBook.getInt( "pages");
}catch(JSONException  e){
  System.out.println("Exception: "+e);
}




//output.html
JavaTester.java:76: cannot find symbol
symbol  : variable name
location: class JavaTester
else if (!name.equals(jsonData.getString("name"))) {
          ^
JavaTester.java:79: cannot find symbol
symbol  : variable publisher
location: class JavaTester
else if (!publisher.equals(jsonData.getString("publisher"))) {
          ^
JavaTester.java:82: cannot find symbol
symbol  : variable language
location: class JavaTester
else if (!language.equals(jsonData.getString("language"))) {
          ^
3 errors