1602 HTTP Get Repo Function

1602-HTTP-Get-Repos-Function.java

    private void getRepoList(String username) {
        // First, we insert the username into the repo url.
        // The repo url is defined in GitHubs API docs (https://developer.github.com/v3/repos/).
        this.url = this.baseUrl + username + "/repos";
      
        // Next, we create a new JsonArrayRequest. This will use Volley to make a HTTP request
        // that expects a JSON Array Response.
        // To fully understand this, I'd recommend readng the office docs: https://developer.android.com/training/volley/index.html
        JsonArrayRequest arrReq = new JsonArrayRequest(Request.Method.GET, url,
                new Response.Listener<JSONArray>() {
                    @Override
                    public void onResponse(JSONArray response) {
                        // Check the length of our response (to see if the user has any repos)
                        if (response.length() > 0) {
                            // The user does have repos, so let's loop through them all.
                            for (int i = 0; i < response.length(); i++) {
                                try {
                                    // For each repo, add a new line to our repo list.
                                    JSONObject jsonObj = response.getJSONObject(i);
                                    String repoName = jsonObj.get("name").toString();
                                    String lastUpdated = jsonObj.get("updated_at").toString();
                                    addToRepoList(repoName, lastUpdated);
                                } catch (JSONException e) {
                                    // If there is an error then output this to the logs.
                                    Log.e("Volley", "Invalid JSON Object.");
                                }

                            }
                        } else {
                            // The user didn't have any repos.
                            setRepoListText("No repos found.");
                        }

                    }
                },

                new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        // If there a HTTP error then add a note to our repo list.
                        setRepoListText("Error while calling REST API");
                        Log.e("Volley", error.toString());
                    }
                }
        );
        // Add the request we just defined to our request queue.
        // The request queue will automatically handle the request as soon as it can.
        requestQueue.add(arrReq);
    }