Android Open Source - SudokuSolver Http Post Utils

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License

The source code is released under:

License JSON Sudoku Solver is covered under the Creative Commons Attribution 3.0 Unported License http://creativecommons.org/licenses/by/3.0/ Credits Sudoku Solver Java implementation: Kevin Coulombe...

Java Source Code

/**
 * JSON Sudoku solver is covered under the Creative Commons Attribution 3.0 Unported License
 * http://creativecommons.org/licenses/by/3.0/
 * //  w ww .  ja  v a 2 s. c  o  m
 * @author: Andrea Bizzotto {@link www.musevisions.com}, {@link www.bizzotto.biz}
 * @email: bizz84dev@gmail.com
 */
package com.musevisions.android.SudokuSolver;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.json.JSONArray;

import android.app.Activity;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.AsyncTask;
import android.widget.Toast;


public class HttpPostUtils {

  //static private final String TAG = "HttpPostUtils";
  /** Class representing the server settings to use for post requests */
  static public class HttpPostSettings {

    private static final String DefaultHttpServer = "www.musevisions.com";
    private static final String DefaultHttpPostTarget = "http://musevisions.com/sudoku/post.php";
      
    final String mHttpServer;
    final String mHttpPostTarget;

    public HttpPostSettings(String httpServer, String httpPostTarget) {
      mHttpServer = httpServer;
      mHttpPostTarget = httpPostTarget;
    }
    public HttpPostSettings() {
      this(DefaultHttpServer, DefaultHttpPostTarget);
    }
    
    final String getServer() { return mHttpServer; }
    final String getPostTarget() { return mHttpPostTarget; }
  }
  
  public interface HttpCallbackListener {
    public void onCallback(String message);
  }
  
  static public class ServerResponseAsync extends AsyncTask<ArrayList<NameValuePair>, String, Void> implements HttpCallbackListener {

    private String mResponse;
    private Activity mParent;
    public ServerResponseAsync(Activity parent) {
      mParent = parent;
      //ServerResponseAsync
    }
    @Override
    protected Void doInBackground(ArrayList<NameValuePair>... params) {
      mResponse = send(new HttpPostSettings(), params[0]);
      
      return null;
    }
    protected void onPostExecute(Void result) {
      onCallback(mResponse);
    }
    @Override
    public void onCallback(String message) {
      Toast.makeText(mParent, message, Toast.LENGTH_SHORT).show();
    }    
  }


  /* Simple name-value pair implementation */
  static public class AppNameValuePair implements NameValuePair {
    private String name;
    private String value;
    public AppNameValuePair(String name, String value) {
      this.name = name;
      this.value = value;
    }
    @Override
    public String getName() {
      return name;
    }
    @Override
    public String getValue() {
      return value;
    }
  }
  @SuppressWarnings("unchecked")
  static public void postResult(final String name, final JSONArray solution, final Activity parent) {

    ArrayList<NameValuePair> result = new ArrayList<NameValuePair>();
    result.add(new AppNameValuePair("name", name));
    result.add(new AppNameValuePair("solution", solution.toString()));

    (new ServerResponseAsync(parent)).execute(result);
    /*new Thread(new Runnable() {
      @Override
        public void run() {
        String response = send(new HttpPostSettings(), result);
        listener.onCallback(response);
      }
    }).start();*/
  }
  
  
  static public String send(HttpPostSettings settings, List<NameValuePair> values) {
    try {
      HttpClient httpclient = new DefaultHttpClient();
      HttpPost httppost = new HttpPost(settings.getPostTarget());
      httppost.setEntity(new UrlEncodedFormEntity(values));      
      HttpResponse response = httpclient.execute(httppost);
      return EntityUtils.toString(response.getEntity());
    } catch (ClientProtocolException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
    return null;
  }
  
    static public boolean isConnected(Activity parent) { 
      ConnectivityManager cm = (ConnectivityManager)parent.getSystemService(Context.CONNECTIVITY_SERVICE);
      final NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
      return activeNetwork != null && activeNetwork.getState() == NetworkInfo.State.CONNECTED;
    }
}

Java Source Code List

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