Android Json codes for Retriving/Displaying data

 

public class ViewPersonalDetails extends Activity {

      EditText et1;

      String jsonResult;

       private String url_view = "http://10.0.2.2/JsonAllInOne/Viewall.php";

       private String URL_deletepdetails ="http://10.0.2.2/JsonAllInO/Deleteperson.php";

      ListView lw;

       ProgressDialog g;

      JSONArray pdetails=null;

      ArrayList<HashMap<String, String>>personalList;

       @Override

       protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.viewpersonal);

        et1=(EditText)findViewById(R.id.del);

        lw = (ListView) findViewById(R.id.listv);

        g = new ProgressDialog(this);

      g.setCancelable(false);

        personalList=new ArrayList<HashMap<String, String>>();

        getData();

       }

       // Async Task to access the web

       private class JsonReaddetails extends AsyncTask<String, Void, String> {     

        @Override

        protected String doInBackground(String... params) {

         HttpClient httpclient = new DefaultHttpClient();

         HttpPost httppost = new HttpPost(params[0]);

         try {

          HttpResponse response = httpclient.execute(httppost);

          jsonResult = inputStreamToString(

            response.getEntity().getContent()).toString();

         }

       

         catch (ClientProtocolException e) {

          e.printStackTrace();

         } catch (IOException e) {

          e.printStackTrace();

         }

         return null;

        }

        private StringBuilder inputStreamToString(InputStream is) {

         String rLine = "";

         StringBuilder answer = new StringBuilder();

         BufferedReader rd = new BufferedReader(new InputStreamReader(is));

       

         try {

          while ((rLine = rd.readLine()) != null) {

           answer.append(rLine);

          }

         }

       

         catch (IOException e) {

          // e.printStackTrace();

          Toast.makeText(getApplicationContext(),"Error..." + e.toString(), Toast.LENGTH_LONG).show();

         }

         return answer;

        }

       

        @Override

        protected void onPostExecute(String result) {

              ShowResult();

        }

       }

       // end async task

       

       public void getData() {

             JsonReaddetails pdetails = new JsonReaddetails();

        // passes values for the urls string array

        pdetails.execute(new String[] { url_view });

       }

       

       // build hash set for list view

       public void ShowResult() {

             // either you can call ArrayList here or in the method

//personalList = new ArrayList<HashMap<String, String>>();

        try {

         JSONObject jsonResponse = new JSONObject(jsonResult);

         pdetails = jsonResponse.getJSONArray("personaldetail");

       // here we are looping

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

              

          JSONObject y = pdetails.getJSONObject(i);

          String person = y.getString("PersonalNo");

          String first= y.getString("FirstName");

         String last = y.getString("LastName");

         String other = y.getString("OtherName");

         String genda = y.getString("Gender");

         String nation = y.getString("Nationality");

         String email = y.getString("Email");

         String driving = y.getString("DrivingPermit");

          String outPut ="\n \n"+"PerNo=:"+" "+ person+"\n"  +"FName=:"+" "+first+"\n"+"LName=:"+" "

          +last+"\n"+"OName=:"+" "+other+"\n"+"Gender=:"+" "+genda+"\n"+"Nationality=:"+nation+"\n"+"Email=:"+" "+email+"\n"+"Permit=:"+" "+driving+"\n";

          personalList.add(Createperson("personaldetails", outPut));

         }

        } catch (JSONException e) {

         Toast.makeText(getApplicationContext(), "Error" + e.toString(),

           Toast.LENGTH_SHORT).show();

        }

       

        SimpleAdapter simpleAdapter = new SimpleAdapter(this, personalList,android.R.layout.simple_list_item_1,

          new String[] { "personaldetails" }, new int[] { android.R.id.text1 });

        lw.setAdapter(simpleAdapter);

       }

       // this definies the table.You can use all field or you can use afew

       private HashMap<String, String> Createperson(String  personalno, String firstName) {

        HashMap<String, String> personalList = new HashMap<String, String>();

       personalList.put(personalno, firstName);

        return personalList;

       }

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