Android Open Source - Recipe-Puppy-Android Request Task

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License

The source code is released under:

Apache License

Java Source Code

package com.jerin.utilities;
//from  www.j  a v  a 2s  .  c  om
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.lang.ref.WeakReference;

import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.StatusLine;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

import android.os.AsyncTask;
import android.util.Log;

/**
 * Performs HTTP Request in the background.
 * 
 * @author jerin
 * 
 */
public class RequestTask extends AsyncTask<String, String, String> {

  private static final String _TAG = RequestTask.class.getSimpleName();
  private WeakReference<IRequestResponseListener> listenerRefernce;

  @Override
  protected String doInBackground(String... uri) {
    HttpClient httpclient = new DefaultHttpClient();
    HttpResponse response;
    String responseString = null;
    try {
      response = httpclient.execute(new HttpGet(uri[0]));
      StatusLine statusLine = response.getStatusLine();
      if (statusLine.getStatusCode() == HttpStatus.SC_OK) {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        response.getEntity().writeTo(out);
        out.close();
        responseString = out.toString();
      } else {
        // Closes the connection.
        response.getEntity().getContent().close();
        throw new IOException(statusLine.getReasonPhrase());
      }
    } catch (ClientProtocolException e) {
      // Handle problems..
      Log.e(_TAG, e.getMessage());
    } catch (IOException e) {
      // Handle problems..
      Log.e(_TAG, e.getMessage());
    }
    return responseString;
  }

  @Override
  protected void onPostExecute(String response) {
    super.onPostExecute(response);

    // Intimate listener of the response
    if (null != listenerRefernce) {
      IRequestResponseListener requestResponseListener = listenerRefernce
          .get();
      if (null != requestResponseListener) {
        requestResponseListener.onRequestComplete(response);
      }
    }
  }

  public void setListener(IRequestResponseListener listener) {
    this.listenerRefernce = new WeakReference<RequestTask.IRequestResponseListener>(
        listener);
  }

  /**
   * Fragments or Activities which initiate a RequestTask must implement this
   * interface to get a callback once response is recieved.
   * 
   * @author jerin
   * 
   */
  public interface IRequestResponseListener {
    void onRequestComplete(String response);
  }
}

Java Source Code List

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