HttpClient.java

package org.smartpaws.net;

import com.loopj.android.http.AsyncHttpClient;
import com.loopj.android.http.AsyncHttpResponseHandler;
import com.loopj.android.http.RequestParams;

import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.entity.BasicHttpEntity;
import org.apache.http.entity.StringEntity;
import org.apache.http.message.BasicHeader;
import org.smartpaws.MainActivity;

import java.io.UnsupportedEncodingException;

public class HttpClient {

    private static final int SOCKET_TIMEOUT = 30 * 1000; // 30 seconds
    public static final String BASE_URL = "http://smartpaws.org/app/";

    private static AsyncHttpClient CLIENT = new AsyncHttpClient();

    static {
        CLIENT.setTimeout(SOCKET_TIMEOUT);
    }

    public static void get(String url, RequestParams params, AsyncHttpResponseHandler handler) {
        CLIENT.get(getAbsoluteUrl(url), params, handler);
    }

    public static void getExternalUrl(String url, RequestParams params, AsyncHttpResponseHandler handler) {
        CLIENT.get(url, params, handler);
    }

    public static void postOAuthUrl(String url, String base64, RequestParams params, AsyncHttpResponseHandler handler) {
        try {
            CLIENT.post(MainActivity.INSTANCE, url,
                    new Header[] {
                            new BasicHeader("Authorization", "Basic " + base64)
                    },
                    new StringEntity("grant_type=client_credentials"),
                    "application/x-www-form-urlencoded;charset=UTF-8", handler);
        } catch (UnsupportedEncodingException ex) {
            ex.printStackTrace();
        }
    }

    public static void getOAuthUrl(String url, String bearer, RequestParams params, AsyncHttpResponseHandler handler) {
        CLIENT.get(MainActivity.INSTANCE, url,
                new Header[] {
                        new BasicHeader("Authorization", "Bearer " + bearer),
                        new BasicHeader("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8")
                }, params, handler);
    }

    private static String getAbsoluteUrl(String url) {
        return BASE_URL + url;
    }
}