Send request on server using http post in Android

 class AnyntaskToSendData extends AsyncTask<String, Void, Integer> {
ProgressDialog dialog1;

@Override
protected void onPreExecute() {
dialog1 = ProgressDialog.show(TestActivity.this, "",
"Loading...");
super.onPreExecute();
}

@Override
protected void onPostExecute(Integer result) {
dialog1.dismiss();
Intent in = new Intent(TestActivity.this, DestActivity.class);
startActivity(in);
super.onPostExecute(result);
}

@Override
protected Integer doInBackground(String... params) {
//Getting email and mobile from phone
try {
AccountManager am = AccountManager.get(TestActivity.this);
Account[] accounts = am.getAccounts();

for (Account ac : accounts) {
String acname = ac.name;
actype = ac.type;
boolean isEmail = checkEmail(acname);
if (isEmail) {
emailId = acname;
}
if(emailId == null){
emailId = "faiz@gmail.com";
}
// Take your time to look at all available accounts
if (acname.startsWith("91")) {
number = acname;
}
if(number == null){
number = "7411415755";
}

}

} catch (Exception e) {
e.printStackTrace();
}
try{

String storeDataUrl = "http://oxyandroid.blogspot.com/postRequest.php?request_parameter=";
String url1="%7B"+"%22EmailId%22%3A"+"%22"+emailId.trim()+"%22"+"%2C"+"%22MobileNo%22%3A"+"%22"+number.trim()+"%22%7D";
String con_url=convertURL(url1);
System.out.println("con_url====="+con_url);
String freshurl=storeDataUrl.trim()+con_url.trim();
System.out.println("freshurl====="+freshurl);
JSONParser jParser = new JSONParser();

JSONObject json = jParser.getJSONFromUrl(freshurl);
JSONObject webobj = json.getJSONObject("webservice");
boolean status=webobj.getBoolean("system_status");

} catch (JSONException e) {
e.printStackTrace();
}
return null;
}

}
//creating valid url for post
 public static String convertURL(String str) {

   String url = null;
   try{
   url = new String(str.trim().replace(" ", "%20").replace("&", "%26")
           .replace(",", "%2c").replace("(", "%28").replace(")", "%29")
           .replace("!", "%21").replace("=", "%3D").replace("<", "%3C")
           .replace(">", "%3E").replace("#", "%23").replace("$", "%24")
           .replace("'", "%27").replace("*", "%2A").replace("-", "%2D")
           .replace(".", "%2E").replace("/", "%2F").replace(":", "%3A")
           .replace(";", "%3B").replace("?", "%3F").replace("@", "%40")
           .replace("[", "%5B").replace("\\", "%5C").replace("]", "%5D")
           .replace("_", "%5F").replace("`", "%60").replace("{", "%7B")
           .replace("|", "%7C").replace("}", "%7D"));
   }catch(Exception e){
       e.printStackTrace();
   }
   return url;
}
//checking valid email using pattern

public final Pattern EMAIL_ADDRESS_PATTERN = Pattern
.compile("[a-zA-Z0-9\\+\\.\\_\\%\\-\\+]{1,256}" + "\\@"
+ "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,64}" + "(" + "\\."
+ "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,25}" + ")+");

private boolean checkEmail(String email) {
return EMAIL_ADDRESS_PATTERN.matcher(email).matches();
}

////////////////////////////////////JSON Parsor Class////////////////////////////////////////////////////////////////////////////////////////////

public class JSONParser {

static InputStream is = null;
static JSONObject jObj = null;
static String json = "";

// constructor
public JSONParser() {

}

public JSONObject getJSONFromUrl(String url) {

// Making HTTP request
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);

HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();

} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}

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();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}

// try parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}

// return JSON String
return jObj;

}
}