Json Example in android

web service android example

JsonActivity.java

package com.hima.android;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import org.apache.http.HttpEntity;

import org.apache.http.HttpResponse;

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 org.json.JSONArray;

import org.json.JSONObject;

import android.app.Activity;

import android.os.Bundle;

public class JsonActivity extends Activity {

               

/** Called when the activity is first created. */

                @Override

                public void onCreate(Bundle savedInstanceState) {

                                super.onCreate(savedInstanceState);

                                setContentView(R.layout.main);

                                String readTwitterFeed = readTwitterFeed();

                                System.out.println("String="+readTwitterFeed);

                               

                                try{

                                                JSONObject jsono=new JSONObject(readTwitterFeed);

                                                readTwitterFeed=jsono.getString("results");

                                                System.out.println("after parse="+readTwitterFeed);

                                               

                                }

                                catch(Exception e){

                                               

                                }

                                try {

                                                JSONArray jsonArray = new JSONArray(readTwitterFeed);

                                               

                                                System.out.println("Number of entries " + jsonArray.length());

                                                for (int i = 0; i < jsonArray.length(); i++) {

                                                                JSONObject jsonObject = jsonArray.getJSONObject(i);

                                               

                                                                System.out.println("text="+jsonObject.getString("text"));

                                                                System.out.println("from_user_name="+jsonObject.getString("from_user_name"));

                                                }

                                } catch (Exception e) {

                                                e.printStackTrace();

                                }

                }

                public String readTwitterFeed() {

                                StringBuilder builder = new StringBuilder();

                                HttpClient client = new DefaultHttpClient();

                                                                HttpGet httpGet = new HttpGet("http://search.twitter.com/search.json?q=Himanshu");

                                try {

                                                HttpResponse response = client.execute(httpGet);

                                                StatusLine statusLine = response.getStatusLine();

                                                int statusCode = statusLine.getStatusCode();

                                                if (statusCode == 200) {

                                                                HttpEntity entity = response.getEntity();

                                                                InputStream content = entity.getContent();

                                                                BufferedReader reader = new BufferedReader(new InputStreamReader(content));

                                                                String line;

                                                                while ((line = reader.readLine()) != null) {

                                                                                builder.append(line);

                                                                }

                                                } else {

                                                               

                                                                System.out.println( "Failed to download file");

                                                }

                                } catch (ClientProtocolException e) {

                                                e.printStackTrace();

                                } catch (IOException e) {

                                                e.printStackTrace();

                                }

                                return builder.toString();

                }

}