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Android Build a Weather App (2015) Working with JSON Using JSONObject

Posted by wesley franks
wesley franks
6,198 Points

Don't understand what it is I am doing wrong with jsonData object...

I am working on a challenge to create String variables named them, and then set them to the data from a jsonData file. Well I believe I have done that, but I see to be having some issues.

JSONChallenge.java 
JSONObject object = new JSONObject();

String name = object.getString("Treehouse Book Series");
String publisher = object.getString("Wiley");
String language = object.getString("English");
data.json 
{
    "name":"Treehouse Book Series",
    "publisher":"Wiley",
    "language":"English",
    "books":[
        {
            "title":"HTML5 Foundations",
            "author":"Matt West",
            "pages":384
        },
        {
            "title":"CSS3 Foundations",
            "author":"Ian Lunn",
            "pages":352
        }
    ]
}
MUZ141138 Budwell Masaiti
MUZ141138 Budwell Masaiti
2,413 Points

Hi , I think you're getting the wrong data, instead for example the first line should be : String name = object.getString("name"); then it returns "Treehouse Book Series". likewise , String publisher = object.getString("publisher"); . your code is currently getting the value not the variable name . try the example I just gave you and get back to me if it doesnt work.

3 Answers

MUZ141138 Budwell Masaiti
MUZ141138 Budwell Masaiti
2,413 Points
MUZ141138 Budwell Masaiti
MUZ141138 Budwell Masaiti
2,413 Points

Hi got your answer, if you read the question again it says the jason data is already loaded into the object jsonData, so all you have to do is this: //for clarity String name; String publisher; String language;

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

I went back to do this one and it worked , try it

wesley franks
wesley franks
6,198 Points

Oh wow, I did exactly that one time around and instead of jsonData.getString I put object.getString having declared JSONObject object = new JSONObject();

So thank you. I just got confused on what it meant by the instructions. It may seem super clear and upfront but I unfortunately have trouble understanding some things right away so thank you!

MUZ141138 Budwell Masaiti
MUZ141138 Budwell Masaiti
2,413 Points

It's alright mate , we all learning, I get confused a lot too..

wesley franks
wesley franks
6,198 Points
wesley franks
wesley franks
6,198 Points

That doesn't work..

Code is below

// A JSONObject variable named 'jsonData'
// was loaded from the data.json file.
JSONObject object = new JSONObject();

String name = object.getString("name");
String publisher = object.getString("publisher");
String language = object.getString("language");
wesley franks
wesley franks
6,198 Points

I get a Syntax error.

wesley franks
wesley franks
6,198 Points

evening adding jsonData into the parameters of JSONObject(); didn't work either still has syntax errors. I followed the video, it's honestly really confusing when I understand why TreeHouse is wanting me to show my skills, but I personally get thrown off when a different senario is used, because I don't understand what is really being needed, and sometimes the challenge questions are vague and I have to end up revisiting the challenge numerous times before I understand it.

wesley franks
wesley franks
6,198 Points
wesley franks
wesley franks
6,198 Points 
// A JSONObject variable named 'jsonData'
// was loaded from the data.json file.
JSONObject object = new JSONObject();

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

I have tried many different options here. I can't take away object from .getString So I am still confused. I will contact Ben on twitter and see if he could be of some help!

I apologize for constant need of help Ben! haha.