Re: [android-developers] How to parse Json file (Which is output of http://maps.googleapis.com/maps/api/geocode/json.....)

After Lots of trial i got following solution.

I am writing full solution,with the intention that everyone can take
benefit of it.and getting solution without wasting valuable time,like
me.

package com.example.Jsonparse;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.InputStreamReader;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
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;
import android.widget.TextView;
import android.widget.Toast;

public class JsonparseActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

try
{
String Lat=Double.toString(22.508507985602836);
String Long=Double.toString(73.474991977022533);

String Address= ReadAddressFromWebService(Lat,Long);
Toast.makeText(this,Address, Toast.LENGTH_LONG).show();
}

catch(Exception e)
{
appendLog("Json parsing error :"+ e.toString());
Toast.makeText(this,e.toString(), Toast.LENGTH_LONG).show();
}
}

public String ReadAddressFromWebService(String latitude, String longitude) {
String Address="";
StringBuffer sb=new StringBuffer();
sb.append("http://maps.googleapis.com/maps/api/geocode/json?latlng="+
latitude +","+longitude +"&sensor=false");
String url=sb.toString();
HttpClient httpClient=new DefaultHttpClient();

appendLog("HTTP client created");
String responseData="";
try {
HttpResponse response=httpClient.execute(new HttpGet(url));
response.addHeader("Accept-Language", "en-US");
HttpEntity entity=response.getEntity();
appendLog("HTTP Response arrived");

BufferedReader bf=new BufferedReader(new
InputStreamReader((entity.getContent()),"UTF-8"));
String line="";
appendLog("Start buffre reading");

while((line=bf.readLine())!=null){
responseData=responseData+line;
}

JSONObject jsonObj = new JSONObject(responseData);

JSONArray resultArry = jsonObj.getJSONArray("results");

Address
=resultArry.getJSONObject(0).getString("formatted_address").toString();

} catch (Exception e) {
// TODO Auto-generated catch block
appendLog("Parsing Problem: "+e.toString());
}

return Address;
}

public void appendLog(String text)
{
File logFile = new File("sdcard/exception.txt");
if (!logFile.exists())
{
try
{
logFile.createNewFile();
}
catch (Exception e)
{
// TODO Auto-generated catch block
e.toString();
}
}
try
{
//BufferedWriter for performance, true to set append to file flag
BufferedWriter buf = new BufferedWriter(new FileWriter(logFile, true));
buf.append(text);
buf.newLine();
buf.close();
}
catch (Exception e)
{
// TODO Auto-generated catch block
e.toString();
}
}
}

On 1/28/12, Dhaval Varia <dhavalkvaria@gmail.com> wrote:
> Thanks for reply..
> Will get back to you after plugging the code..
> On Jan 28, 2012 10:54 AM, "Shubhangi" <shubhangidesai03@gmail.com> wrote:
>
>> hello
>>
>> first of all let me tell u regarding ur track for JSON parsing and
>> getting
>> address using a web service is right..
>> now here I'm sending u code that how I am used to parse the JSON data..
>> All you have to do is check this specified URL and change the rest of the
>> code according your requirements..
>>
>> code is given below
>>
>>
>> --------------------------------------------------------------------------------------------------------------------
>>
>> ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String,
>> String>>();
>> JSONObject json = JSONfunctions.getJSONfromURL("
>> http://api.geonames.org/earthquakesJSON?north=44.1&south=-9.9&east=-22.4&west=55.2&username=demo
>> ");
>> try{
>> JSONArray earthquakes = json.getJSONArray("earthquakes");
>> for(int i=0;i<earthquakes.length();i++){
>> HashMap<String, String> map = new HashMap<String, String>();
>> JSONObject e = earthquakes.getJSONObject(i);
>> map.put("id", String.valueOf(i));
>> map.put("name", "Earthquake name:" + e.getString("eqid"));
>> map.put("magnitude", "Magnitude: " + e.getString("magnitude"));
>> mylist.add(map);
>> }
>> }catch(JSONException e) {
>> Log.e("log_tag", "Error parsing data "+e.toString());
>> }
>>
>> ListAdapter adapter = new SimpleAdapter(this, mylist ,
>> R.layout.main,
>> new String[] { "name", "magnitude" },
>> new int[] { R.id.item_title, R.id.item_subtitle
>> });
>>
>> setListAdapter(adapter);
>>
>>
>>
>>
>> -------------------------------------------------------------------------------------------------------------------------------------
>>
>> let me know whether it works or not for you...
>>
>> thank you
>>
>>
>

--
Thanks & Best Regards.
----------------------------------------------------------------------------------------
Dhaval varia
Assistant Professor
Govt Engineering College,Modasa
(9924343883)

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