Create Http connection : Http Connection « Network « Android

1. Android
2. Network
3. Http Connection

Create Http connection

    

package app.test;

import java.io.IOException;

import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.impl.client.BasicResponseHandler;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;

import android.app.Activity;
import android.app.Application;
import android.net.http.AndroidHttpClient;
import android.os.Bundle;
import android.util.Log;

class ApplicationEx extends Application {
  String TAG = "ApplicationEx";
  private AndroidHttpClient httpClient;

  @Override
  public void onCreate() {
    super.onCreate();
    httpClient = createHttpClient();
  }

  private AndroidHttpClient createHttpClient() {
    AndroidHttpClient httpClient = AndroidHttpClient.newInstance("Mozilla/5.0 (Linux; U; Android 2.1; en-us; ADR6200 Build/ERD79) AppleWebKit/530.17 (KHTML, like Gecko) Version/ 4.0 Mobile Safari/530.17");

    ClientConnectionManager conMgr = httpClient.getConnectionManager();
    SchemeRegistry schReg = conMgr.getSchemeRegistry();
    for (String scheme : schReg.getSchemeNames()) {
      Log.v(TAG,"Scheme: "+ scheme+ ", port: "
              + schReg.getScheme(scheme).getDefaultPort()
              + ", factory: "
              + schReg.getScheme(scheme).getSocketFactory()
                  .getClass().getName());
    }

    HttpParams params = httpClient.getParams();
    Log.v(TAG,"http.protocol.version: "+ params.getParameter("http.protocol.version"));
    Log.v(TAG,"http.protocol.content-charset: "+ params.getParameter("http.protocol.content-charset"));
    Log.v(TAG,"http.protocol.handle-redirects: "+ params.getParameter("http.protocol.handle-redirects"));
    Log.v(TAG,"http.conn-manager.timeout: "+ params.getParameter("http.conn-manager.timeout"));
    Log.v(TAG,"http.socket.timeout: "+ params.getParameter("http.socket.timeout"));
    Log.v(TAG,"http.connection.timeout: "+ params.getParameter("http.connection.timeout"));
    return httpClient;
  }

  public AndroidHttpClient getHttpClient() {
    if (httpClient == null)
      httpClient = createHttpClient();
    return httpClient;
  }

  @Override
  public void onLowMemory() {
    super.onLowMemory();
    shutdownHttpClient();
  }

  @Override
  public void onTerminate() {
    super.onTerminate();
    shutdownHttpClient();
  }

  private void shutdownHttpClient() {
    if (httpClient != null) {
      if (httpClient.getConnectionManager() != null) {
        httpClient.getConnectionManager().shutdown();
      }
      httpClient.close();
      httpClient = null;
    }
  }
}

public class Test extends Activity {
  private ApplicationEx app;
  private HttpClient httpClient;

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

    app = (ApplicationEx) this.getApplication();
    httpClient = app.getHttpClient();
    getHttpContent();
  }

  public void getHttpContent() {
    try {
      HttpGet request = new HttpGet("http://www.google.com/");
      HttpParams params = new BasicHttpParams();
      HttpConnectionParams.setSoTimeout(params, 60000); // 1 minute
      request.setParams(params);
      Log.v("connection timeout", String.valueOf(HttpConnectionParams
          .getConnectionTimeout(params)));
      Log.v("socket timeout",
          String.valueOf(HttpConnectionParams.getSoTimeout(params)));

      String page = httpClient.execute(request,
          new BasicResponseHandler());
      System.out.println(page);
    } catch (IOException e) {
      // covers:
      // ClientProtocolException
      // ConnectTimeoutException
      // ConnectionPoolTimeoutException
      // SocketTimeoutException
      e.printStackTrace();
    }
  }
}

   
    
    
    
  

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