Android网络请求库android-async-http介绍

package com.chengdong.su.util.get;

import org.apache.http.Header;
import org.json.JSONException;
import org.json.JSONObject;

import android.content.Context;
import android.widget.Toast;

import com.loopj.android.http.JsonHttpResponseHandler;
import com.loopj.android.http.RequestParams;

/**
 * 异步请求服务器
 * 
 * @author scd
 * 
 */
public class AsyncJsonUtilGet {
  private static final String URL = "";
  private Context mContext;

  /**
   * 构造方法
   * 
   * @param mContext
   */
  public AsyncJsonUtilGet(Context mContext) {
    super();
    this.mContext = mContext;
  }

  /**
   * 邮箱注册
   */
  public void emailRegister(String email, String password, String username) {

    RequestParams params = new RequestParams();
    JSONObject jsonObject = new JSONObject();
    try {
      jsonObject.put("email", email);
      jsonObject.put("password", password);
      jsonObject.put("username", username);

    } catch (JSONException e) {
      e.printStackTrace();
    }
    params.put("jsonObject", jsonObject);
    // get请求方式
    HttpUtil.get(URL, params, new JsonHttpResponseHandler() {

      @Override
      public void onFailure(int statusCode, Header[] headers,
          Throwable throwable, JSONObject errorResponse) {
        super.onFailure(statusCode, headers, throwable, errorResponse);
        Toast.makeText(mContext, "Register failed!", Toast.LENGTH_SHORT)
            .show();
      }

      @Override
      public void onSuccess(int statusCode, Header[] headers,
          JSONObject response) {
        String errorCode = response.optString("ErrorCode");
        // 表示请求成功
        if (errorCode.equals("0")) {
          Toast.makeText(mContext, "注册成功", Toast.LENGTH_LONG).show();
          // response：返回的数据都在这个参数中，根据业务要求进行实现功能
        } else {
          super.onSuccess(statusCode, headers, response);
        }
      }

    });

  }

}

package com.chengdong.su.util.get;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;
import java.util.Set;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

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

public class HttpUtil {
  public static final String STATUS_NETWORK = "network_available";
  private static AsyncHttpClient client = new AsyncHttpClient();

  static {
    client.setTimeout(11000);
  }

  public static void get(String urlString, AsyncHttpResponseHandler res) {
    client.get(urlString, res);
  }

  public static void get(String urlString, RequestParams params,
      AsyncHttpResponseHandler res) {
    client.get(urlString, params, res);
  }

  public static void get(String urlString, JsonHttpResponseHandler res)

  {
    client.get(urlString, res);
  }

  public static void get(String urlString, RequestParams params,
      JsonHttpResponseHandler res)

  {
    client.get(urlString, params, res);
  }

  public static void get(String uString, BinaryHttpResponseHandler bHandler)

  {
    client.get(uString, bHandler);
  }

  public static AsyncHttpClient getClient() {
    return client;
  }

  public static boolean isNetworkConnected(Context context) {
    if (context != null) {
      ConnectivityManager mConnectivityManager = (ConnectivityManager) context
          .getSystemService(Context.CONNECTIVITY_SERVICE);
      NetworkInfo mNetworkInfo = mConnectivityManager
          .getActiveNetworkInfo();
      if (mNetworkInfo != null) {
        return mNetworkInfo.isAvailable();
      }
    }
    return false;
  }

  // 从UrlConnection中获取文件名称
  public static String getFileName(String url) {
    String fileName = null;
    boolean isOK = false;
    try {
      URL myURL = new URL(url);

      URLConnection conn = myURL.openConnection();
      if (conn == null) {
        return null;
      }
      Map<String, List<String>> hf = conn.getHeaderFields();
      if (hf == null) {
        return null;
      }
      Set<String> key = hf.keySet();
      if (key == null) {
        return null;
      }

      for (String skey : key) {
        List<String> values = hf.get(skey);
        for (String value : values) {
          String result;
          try {
            result = value;
            int location = result.indexOf("filename");

            if (location >= 0) {
              result = result.substring(location
                  + "filename".length());
              result = java.net.URLDecoder
                  .decode(result, "utf-8");
              result = result.substring(result.indexOf("\"") + 1,
                  result.lastIndexOf("\""));

              fileName = result
                  .substring(result.indexOf("=") + 1);
              isOK = true;
            }
          } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
          }
        }
        if (isOK) {
          break;
        }
      }
    } catch (MalformedURLException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
    return fileName;
  }

}