[JAVA] [MT] Specify the article category from Android with Data API

DataAPI wants to post articles on Android! It is a very important API at that time. This time, I would like to briefly explain the specification of categories from among them.

• This article is intended for intermediate Android developers and above who understand the life cycle and API.

Get article category

String cgi_url = "http://path/to/mt-data-api.cgi;
String blog_id  = "id";
String username     = "username"
String password = "password"
String token;
ArrayList<String>  categoryLabel;
ArrayList<Integer> categoryId;
AsyncHttpClient    client;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    categoryLabel        = new ArrayList<String>();
    categoryId           = new ArrayList<Integer>();
    client               = new AsyncHttpClient();
    RequestParams params = new RequestParams();

    params.put("username", username);
    params.put("password", password);
    params.put("clientId", "test");

    String url = cgi_url.concat("/v2/authentication");
    client.post(url, params, new JsonHttpResponseHandler() {
        @Override
        public void onSuccess(JSONObject res) {
            try {
                token = res.getString("accessToken");
                Toast.makeText(act, "You are now logged", Toast.LENGTH_LONG).show();
                preferencesUtil.putInt("InitState", 1);
            } catch (Exception e) {
                Toast.makeText(act, "Login error", Toast.LENGTH_LONG).show();
            }
        }

        @Override
        public void onFailure(Throwable e, JSONObject res) {
            Toast.makeText(act, "Login error", Toast.LENGTH_LONG).show();
        }
    });

    url = cgi_url.concat("/v2/sites/2/categories");
    client.get(url, params, new JsonHttpResponseHandler() {
        @Override
        public void onSuccess(JSONObject json) {
            try {
                //To get the title
                JSONArray datas = json.getJSONArray("items");
                for(int i=0; i<datas.length(); i++) {
                    categoryLabel.add(datas.getJSONObject(i).getString("label"));
                    categoryId.add(Integer.parseInt(datas.getJSONObject(i).getString("id")));
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
        @Override
        public void onFailure(Throwable e, JSONObject res) {
            Toast.makeText(act, "Login error", Toast.LENGTH_LONG).show();
        }
    });
}

Declare cgi_url: DataAPI endpoint, blog_id: blog ID, ʻusername: username, password: password` in the member area.

Get articles in ʻonCreate`.

To log in, insert the member variables ʻusername and passwordintoRequestParams and ** post ** to cgi_url + / v2 / authentication with ʻAsyncHttpClient.

If you log in successfully, you will enter ʻonSuccess and JSONObject will be returned, so save ʻaccessToken.

To get the article category, ** post ** the RequestParams created earlier to cgi_url + / v2 / sites / 2 / categories with ʻAsyncHttpClient`.

If the category is successfully acquired, it will enter ʻonSuccess, so insert the element of ʻitems into JSONArray.

JSONArray datas = json.getJSONArray("items");

Get the label and ʻid of the registered category from the obtained ʻitems.

for(int i=0; i<datas.length(); i++) {
    categoryLabel.add(datas.getJSONObject(i).getString("label"));
    categoryId.add(Integer.parseInt(datas.getJSONObject(i).getString("id")));
}

Now you can get the article category.

Post an article

If you can do this, all you have to do is post.

    private void uploadText() throws JSONException {
        CharSequence  title  = "title";
        CharSequence  body   = "body";
        JSONObject    entry  = new JSONObject();
        RequestParams params = new RequestParams();
        JSONArray categories = new JSONArray();
        JSONObject category;
        for(int i=0; i<categoryLabel.size(); i++) {           
            category = new JSONObject();
            category.put("id",categoryId.get(i));
            categories.put(category);
        }
        try {
            entry.put("title", title);
            entry.put("body", body);
            entry.put("categories",categories);
            entry.put("status", "Draft");
        } catch (JSONException e) {
            e.printStackTrace();
        }
        params.put("entry", entry.toString());
        String url = cgi_url.concat("/v2/sites/").concat(blog_id).concat("/entries");
        Header[] headers = new Header[1];
        headers[0] = new BasicHeader("X-MT-Authorization", "MTAuth accessToken=".concat(token));
        client.post(getBaseContext(), url, headers, params, "application/x-www-form-urlencoded", new JsonHttpResponseHandler() {
            @Override
            public void onSuccess(JSONObject res) {
                Toast.makeText(act, "send completely", Toast.LENGTH_LONG).show();
            }
            public void onFailure(Throwable e, JSONObject res) {
                Toast.makeText(act, "sending error", Toast.LENGTH_LONG).show();
            }
        });

    }

First, create the entry element JSONObject and RequestParams to send the article request. After that, prepare JSONArray for inserting multiple categories and JSONObject for inserting individual categories. The category entry is id and the category group entry is categories. When ** post **, send by inserting category inside categories. After that, if you enter the endpoint of ʻurlandheaders set as params with ʻAsyncHttpClient and send it, you can create an article with the category registered.

Supplement

Since it uses the internet, it's in Android Manifest <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> Don't forget to declare!