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Android Build a Blog Reader Android App Getting Data from the Web Getting JSON Data from an HTTP Request

Timothy Boland
Timothy Boland
18,237 Points
Posted by Timothy Boland
Timothy Boland
18,237 Points

Google JSON API - Not sure how to get the results objects

Im trying to do the Google JSON API extra credit...but im stuck on handling the json response....unlike the Treehouse json...the results objects are nested within the responseData object....ive tried doing getJSONArray on both results and responseData...but i get errors for both:

Here is some of my code:

public void handleSearchResponse() {
        //mProgressBar.setVisibility(View.INVISIBLE);

        if (mSearchData == null) {
            updateDisplayForError();
        } else {
            try {
                JSONArray jsonResults = mSearchData.getJSONArray("responseData");
                ArrayList<HashMap<String, String>> searchResults =
                        new ArrayList<HashMap<String, String>>();
                for (int i = 0; i < jsonResults.length(); i++) {
                    JSONObject result = jsonResults.getJSONObject(i);
                    String title = result.getString(KEY_TITLE);
                    title = Html.fromHtml(title).toString();
                    Log.v(TAG, title);

When i try getJSONArray("responseData") I get the following error:

responseData of type org.json.JSONObject cannot be converted to JSONArray

When I try getJSONArray("results") I get the following error:

Exception Caught!
org.json.JSONException: No value for results

1 Answer

Timothy Boland
Timothy Boland
18,237 Points
Timothy Boland
Timothy Boland
18,237 Points

I found the answer from this tutorial:

http://android-er.blogspot.com/2012/09/implement-google-search-json-for-android.html

I had to load the jsonResponse into a JSONObject first to fetch the responseData object, then use that responseData object to access the results array....like so:

 public void handleSearchResponse() {
        //mProgressBar.setVisibility(View.INVISIBLE);

        if (mSearchData == null) {
            updateDisplayForError();
        } else {
            try {
                JSONObject jsonObjectResponseData = mSearchData.getJSONObject("responseData");
                JSONArray jsonResults = jsonObjectResponseData.getJSONArray("results");
                ArrayList<HashMap<String, String>> searchResults =
                        new ArrayList<HashMap<String, String>>();
                for (int i = 0; i < jsonResults.length(); i++) {
                    JSONObject result = jsonResults.getJSONObject(i);
                    String title = result.getString(KEY_TITLE);
                    title = Html.fromHtml(title).toString();
                    Log.v(TAG, title);