Java tutorial
/* * XML: view_inventory * List all cars */ package com.ateam.alleneatonautorentals; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import org.apache.http.NameValuePair; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import android.app.ListActivity; import android.app.ProgressDialog; import android.content.Intent; import android.os.AsyncTask; import android.os.Bundle; import android.util.Log; import android.view.Menu; import android.view.View; import android.widget.AdapterView; import android.widget.ListAdapter; import android.widget.ListView; import android.widget.SimpleAdapter; import android.widget.TextView; import android.widget.Toast; import android.widget.AdapterView.OnItemClickListener; public class ServiceViewCars extends ListActivity { private ProgressDialog progressDialog; JSONParser jsonParser = new JSONParser(); ArrayList<HashMap<String, String>> carsList; private static final String CARS_URL = "http://people.eecs.ku.edu/~kwu96/ATeamScripts/list_cars.php"; private static final String TAG_SUCCESS = "success"; private static final String TAG_CARS = "cars"; private static final String TAG_ID = "id"; private static final String TAG_TYPE = "type"; private static final String TAG_MAKE = "make"; private static final String TAG_MODEL = "model"; private static final String TAG_YEAR = "year"; private static final String TAG_LICENSE_PLATE = "license_plate"; private static final String TAG_LICENSE_STATE = "license_state"; private static final String TAG_MILES = "miles"; private static final String TAG_OIL_DATE = "oil_change_date"; private static final String TAG_OIL_MILE = "oil_change_mile"; private static final String TAG_TIRE_DATE = "tire_rotation_date"; private static final String TAG_TIRE_MILE = "tire_rotation_mile"; private static final String TAG_FILTER_DATE = "air_filters_date"; private static final String TAG_FILTER_MILE = "air_filters_mile"; private static final String TAG_LOCATION = "location"; JSONArray cars = null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.view_inventory); carsList = new ArrayList<HashMap<String, String>>(); new LoadAllCars().execute(); SessionManager session = new SessionManager(getApplicationContext()); String role = session.getRole(); if (role.equals("Service") || role.equals("Manager")) { ListView lv = getListView(); lv.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { String model = ((TextView) view.findViewById(R.id.car_model_list)).getText().toString(); String make = ((TextView) view.findViewById(R.id.car_make_list)).getText().toString(); String carid = ((TextView) view.findViewById(R.id.car_id_list)).getText().toString(); Intent ii = new Intent(getApplicationContext(), ServiceCarMenu.class); ii.putExtra(TAG_MODEL, model); ii.putExtra(TAG_MAKE, make); ii.putExtra(TAG_ID, carid); ii.putExtra("key", ""); startActivity(ii); finish(); } }); } } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); return true; } class LoadAllCars extends AsyncTask<String, String, String> { @Override protected void onPreExecute() { super.onPreExecute(); progressDialog = new ProgressDialog(ServiceViewCars.this); progressDialog.setMessage("Loading inventory..."); progressDialog.setIndeterminate(false); progressDialog.setCancelable(false); progressDialog.show(); } @Override protected String doInBackground(String... args) { List<NameValuePair> params = new ArrayList<NameValuePair>(); JSONObject json = jsonParser.makeHttpRequest(CARS_URL, "GET", params); Log.d("All Cars: ", json.toString()); try { int success = json.getInt(TAG_SUCCESS); if (success == 1) { cars = json.getJSONArray(TAG_CARS); // Go through each users in JSON for (int i = 0; i < cars.length(); i++) { JSONObject c = cars.getJSONObject(i); // Get the string from JSON String id = c.getString(TAG_ID); String type = c.getString(TAG_TYPE); String make = c.getString(TAG_MAKE); String model = c.getString(TAG_MODEL); String year = c.getString(TAG_YEAR); String license_state = c.getString(TAG_LICENSE_STATE); String license_plate = c.getString(TAG_LICENSE_PLATE); String miles = c.getString(TAG_MILES); String oil_date = c.getString(TAG_OIL_DATE); String oil_mile = c.getString(TAG_OIL_MILE); String tire_date = c.getString(TAG_TIRE_DATE); String tire_mile = c.getString(TAG_TIRE_MILE); String filter_date = c.getString(TAG_FILTER_DATE); String filter_mile = c.getString(TAG_FILTER_MILE); String location = c.getString(TAG_LOCATION); HashMap<String, String> map = new HashMap<String, String>(); // Store the strings map.put(TAG_ID, "Car ID: ".concat(id)); map.put(TAG_TYPE, "Car Type: ".concat(type)); map.put(TAG_MAKE, make); map.put(TAG_MODEL, "Car Model: ".concat(model)); map.put(TAG_YEAR, "Car Year: ".concat(year)); map.put(TAG_LICENSE_PLATE, "License Plate: ".concat(license_plate)); map.put(TAG_LICENSE_STATE, "Issued In: ".concat(license_state)); map.put(TAG_MILES, "Miles: ".concat(miles)); map.put(TAG_OIL_DATE, "Oil Change Date: ".concat(oil_date)); map.put(TAG_OIL_MILE, "Oil Use Miles: ".concat(oil_mile)); map.put(TAG_TIRE_DATE, "Tire Rotation Date: ".concat(tire_date)); map.put(TAG_TIRE_MILE, "Tire Miles: ".concat(tire_mile)); map.put(TAG_FILTER_DATE, "Air Filter Replacement Date: ".concat(filter_date)); map.put(TAG_FILTER_MILE, "Air Filter Miles: ".concat(filter_mile)); map.put(TAG_LOCATION, "Car's Current Location: ".concat(location)); carsList.add(map); } } else { Intent ii = new Intent(ServiceViewCars.this, MainMenu.class); Bundle b = new Bundle(); b.putString("employeeType", "Service"); ii.putExtras(b); startActivity(ii); finish(); return "Error in Database"; } } catch (JSONException e) { e.printStackTrace(); } return null; } protected void onPostExecute(String message) { progressDialog.dismiss(); if (message != null) { Toast.makeText(ServiceViewCars.this, message, Toast.LENGTH_LONG).show(); } else { // Puts all the strings into the list runOnUiThread(new Runnable() { public void run() { ListAdapter adapter = new SimpleAdapter(ServiceViewCars.this, carsList, R.layout.listitem_car, new String[] { TAG_ID, TAG_TYPE, TAG_MAKE, TAG_MODEL, TAG_YEAR, TAG_LICENSE_PLATE, TAG_LICENSE_STATE, TAG_MILES, TAG_OIL_DATE, TAG_OIL_MILE, TAG_TIRE_DATE, TAG_TIRE_MILE, TAG_FILTER_DATE, TAG_FILTER_MILE, TAG_LOCATION }, new int[] { R.id.car_id_list, R.id.car_type_list, R.id.car_make_list, R.id.car_model_list, R.id.car_year_list, R.id.car_license_plate_list, R.id.car_license_state_list, R.id.car_miles_list, R.id.car_oil_date_list, R.id.car_oil_mile_list, R.id.car_tire_date_list, R.id.car_tire_mile_list, R.id.car_filter_date_list, R.id.car_filter_mile_list, R.id.car_location_list }); setListAdapter(adapter); } }); } } } @Override public void onBackPressed() { Intent ii = new Intent(getApplicationContext(), MainMenu.class); Bundle b = new Bundle(); b.putString("employeeType", "Service"); ii.putExtras(b); startActivity(ii); finish(); } }