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Android

Posted by iwgpnjvycw
iwgpnjvycw
8,577 Points

How to handle an array of JSONObjects

Hi everyone! I'm fairly new to Java and Android, and I'm working on an app that retrieves photo data from Unsplash's API. I watched Treehouse's Weather App course, hoping it would give me some idea of how to handle the JSON I'm getting back, but I'm stuck.

I'm getting back an array of JSONObjects, and I'm just not sure of how best to access an object inside an object. For example, each photo object will have a user object, a profile image object, and a urls object.

The JSON looks like this: JSON

What I'm trying to do is display a list of the photos, and each entry will include the photo, the user/photographer's profile image and name, and the number of likes they've gotten for this particular photo.

Below is the code I have so far, but is this even the right way to approach this problem? Is there a way to accomplish this without repeating myself so much?

private NewPhotos getNewPhotos(String jsonData) throws JSONException {
        JSONArray unsplash = new JSONArray(jsonData);

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

            JSONObject jsonObj = (JSONObject) unsplash.get(i);
            String id = jsonObj.getString("id");
            String photoUrls = jsonObj.getString("urls");
            int likes = jsonObj.getInt("likes");

        }
        return new NewPhotos();
}

1 Answer

Tareq Alothman
Tareq Alothman
17,921 Points
Tareq Alothman
Tareq Alothman
17,921 Points

Hello Bianca,

This is my second answer on the forums, and I hope that I can help :)

I think, if you are getting the string "id" correctly, this means you are getting the root of each object correctly. So then, you need to get the objects inside this object to traverse deeper into "user". I think you should use something like the following:

JSONObject jsonObj = (JSONObject) unsplash.get(i);
String id = jsonObj.getString("id");
JSONObject photoUrls = jsonObj.getJSONObject("urls");
String rawUrl = photoUrls.getString("raw");
String fullUrl = photoUrls.getString("full");
...
int likes = jsonObj.getInt("likes");

Good luck :)