Get Server Data : Http Connection « Network « Android

1. Android
2. Network
3. Http Connection

Get Server Data

     
//package com.example.TestDB;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
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.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.LinearLayout;
import android.widget.TextView;

public class TestDB extends Activity {
  /** Called when the activity is first created. */

  TextView txt;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    //setContentView(R.layout.main);
    // Create a crude view - this should really be set via the layout
    // resources
    // but since its an example saves declaring them in the XML.
    LinearLayout rootLayout = new LinearLayout(getApplicationContext());
    txt = new TextView(getApplicationContext());
    rootLayout.addView(txt);
    setContentView(rootLayout);

    // Set the text and call the connect function.
    txt.setText("Connecting...");
    // call the method to run the data retreival
    txt.setText(getServerData(KEY_121));

  }

  public static final String KEY_121 = "http://50.56.69.127/getAllPeopleBornAfter.php"; // i
                                              // use
                                              // my
                                              // real
                                              // ip
                                              // here

  private String getServerData(String returnString) {

    InputStream is = null;

    String result = "";
    // the year data to send
    ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
    nameValuePairs.add(new BasicNameValuePair("year", "1965"));

    // http post
    try {
      HttpClient httpclient = new DefaultHttpClient();
      HttpPost httppost = new HttpPost(KEY_121);
      httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
      HttpResponse response = httpclient.execute(httppost);
      HttpEntity entity = response.getEntity();
      is = entity.getContent();

    } catch (Exception e) {
      Log.e("log_tag", "Error in http connection " + e.toString());
    }

    // convert response to string
    try {
      BufferedReader reader = new BufferedReader(new InputStreamReader(
          is, "iso-8859-1"), 8);
      StringBuilder sb = new StringBuilder();
      String line = null;
      while ((line = reader.readLine()) != null) {
        sb.append(line + "\n");
      }
      is.close();
      result = sb.toString();
    } catch (Exception e) {
      Log.e("log_tag", "Error converting result " + e.toString());
    }
    // parse json data
    try {
      JSONArray jArray = new JSONArray(result);
      for (int i = 0; i < jArray.length(); i++) {
        JSONObject json_data = jArray.getJSONObject(i);
        Log.i("log_tag",
            "id: " + json_data.getInt("id") + ", name: "
                + json_data.getString("name") + ", sex: "
                + json_data.getInt("sex") + ", birthyear: "
                + json_data.getInt("birthyear"));
        // Get an output to the screen
        returnString += "\n\t" + jArray.getJSONObject(i);
      }
    } catch (JSONException e) {
      Log.e("log_tag", "Error parsing data " + e.toString());
    }
    return returnString;
  }

}

   
    
    
    
    
  

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