Java tutorial
package com.example.karspoolingapp; import java.util.ArrayList; import java.util.List; import org.apache.http.NameValuePair; import org.apache.http.message.BasicNameValuePair; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import android.app.Activity; import android.app.ProgressDialog; import android.content.Intent; import android.os.AsyncTask; import android.os.Bundle; import android.os.StrictMode; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.RadioButton; import android.widget.RadioGroup; import android.widget.RelativeLayout; import android.widget.Toast; public class RouteByHitchhikerCar extends Activity { MaintainSessionVariables session = new MaintainSessionVariables(); private static final String READ_COMMENTS_URL2 = "http://morningchronicles.com/android/getTripDetailsCar.php"; private static final String INSERTION_URL = "http://morningchronicles.com/android/insertHitchhikerDetails.php"; //private static final String INSERTION_URL = "http://morningchronicles.com/android/insertHitchhikerTripDetails.php"; //private static final String GET_VACANCY_URL = "http://morningchronicles.com/android/getVacancy.php"; private ProgressDialog pDialog; private static final String TAG_SUCCESS = "success"; private static final String TAG_MESSAGE = "message"; JsonParser jsonParser = new JsonParser(); JsonParser jsonParser2 = new JsonParser(); // JsonParser jsonUpdate = new JsonParser(); private JSONArray jsonTripDetails = null; RelativeLayout rl; RadioGroup rg; String new_license_number; String details; int jsonLength; String session_username; JSONObject json; String username = "ankita2"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.routebyhitchhiker); Intent intent = getIntent(); Bundle bundle = intent.getExtras(); new_license_number = bundle.getString("pre_end_point"); //session_username = session.getUsername(); System.out.println("nayaaa licnse number" + new_license_number); StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build(); StrictMode.setThreadPolicy(policy); // code for dynamic radio button generation final RadioButton[] rb = new RadioButton[100]; rl = (RelativeLayout) findViewById(R.id.rl); rg = new RadioGroup(this); // Building Parameters List<NameValuePair> params = new ArrayList<NameValuePair>(); params.add(new BasicNameValuePair("car_number", new_license_number)); System.out.println(params); json = jsonParser.makeHttpRequest(READ_COMMENTS_URL2, "POST", params); params.clear(); System.out.println(json); try { jsonTripDetails = json.getJSONArray("route"); System.out.println(jsonTripDetails); int k = jsonTripDetails.length(); if (k > 0) { for (int i = 0; i < jsonTripDetails.length(); i++) { JSONObject c = jsonTripDetails.getJSONObject(i); String parent_username_str = c.getString("username"); String route = c.getString("route"); String timing = c.getString("timing"); String seating = c.getString("seating_capacity"); rb[i] = new RadioButton(this); rg.addView(rb[i]); rb[i].setText(parent_username_str + "," + route + "," + timing + "," + seating); params.clear(); } rl.addView(rg); rl.setPadding(50, 50, 50, 50); } else { Toast.makeText(RouteByHitchhikerCar.this, "No Trip available on these routes", Toast.LENGTH_LONG) .show(); } } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } addListenerOnButton(); } public void addListenerOnButton() { Button btnDisplay = (Button) findViewById(R.id.button1); btnDisplay.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // get selected radio button from radioGroup int selectedId = rg.getCheckedRadioButtonId(); System.out.println("selected Id is" + selectedId); try { JSONObject c = jsonTripDetails.getJSONObject(selectedId - 1); String parent_username_str = c.getString("username"); String route = c.getString("route"); String timing = c.getString("timing"); String seating_capacity = c.getString("seating_capacity"); String new_sp = c.getString("start_point"); String new_dp = c.getString("end_point"); System.out.println("before main method"); new InsertToDatabase(username, parent_username_str, route, timing, seating_capacity, new_sp, new_dp).execute(); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }); } class InsertToDatabase extends AsyncTask<String, String, String> { /** * Before starting background thread Show Progress Dialog * */ String s_username, s_parent_username_str, s_route, s_timing, s_seating_capacity, s_new_sp, s_new_dp; boolean failure = false; public InsertToDatabase(String username, String parent_username_str, String route, String timing, String seating_capacity, String new_sp, String new_dp) { System.out.println("i am in the main method"); s_username = username; s_parent_username_str = parent_username_str; s_route = route; s_timing = timing; s_seating_capacity = seating_capacity; s_new_sp = new_sp; s_new_dp = new_dp; System.out.println("heyyy " + s_username); } @Override protected void onPreExecute() { super.onPreExecute(); pDialog = new ProgressDialog(RouteByHitchhikerCar.this); pDialog.setMessage("Inserting details..."); pDialog.setIndeterminate(false); pDialog.setCancelable(true); pDialog.show(); } @Override protected String doInBackground(String... args) { // TODO Auto-generated method stub // Check for success tag int success; System.out.println("in background i am"); try { // Building Parameters List<NameValuePair> params = new ArrayList<NameValuePair>(); params.add(new BasicNameValuePair("username", s_username)); params.add(new BasicNameValuePair("parent_username_str", s_parent_username_str)); params.add(new BasicNameValuePair("route", s_route)); params.add(new BasicNameValuePair("timing", s_timing)); params.add(new BasicNameValuePair("start_point", s_new_sp)); params.add(new BasicNameValuePair("end_point", s_new_dp)); System.out.println("param value is --->>" + params); //System.out.println("came till herrrrrrreeeeeeee....."); Log.d("request!", "starting"); // getting product details by making HTTP request JSONObject jsonVacancy = jsonParser2.makeHttpRequest(INSERTION_URL, "POST", params); // check your log for json response Log.d("Inserting...", jsonVacancy.toString()); // json success tag success = jsonVacancy.getInt(TAG_SUCCESS); if (success == 1) { Log.d("Insertion Successful!", jsonVacancy.toString()); // Intent i = new Intent(Login.this, ReadComments.class); // finish(); // startActivity(i); return jsonVacancy.getString(TAG_MESSAGE); } else { Log.d("Insertion Failed!", jsonVacancy.getString(TAG_MESSAGE)); return jsonVacancy.getString(TAG_MESSAGE); } } catch (JSONException e) { e.printStackTrace(); } return null; } /** * After completing background task Dismiss the progress dialog * **/ @Override protected void onPostExecute(String file_url) { // dismiss the dialog once product deleted pDialog.dismiss(); if (file_url != null) { Toast.makeText(RouteByHitchhikerCar.this, file_url, Toast.LENGTH_LONG).show(); } } } }