Java tutorial
/* * XML: view_users * View all users */ 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.AdapterView.OnItemClickListener; import android.widget.ListAdapter; import android.widget.ListView; import android.widget.SimpleAdapter; import android.widget.Toast; import android.widget.TextView; public class SalesViewUsers extends ListActivity { private ProgressDialog progressDialog; JSONParser jsonParser = new JSONParser(); ArrayList<HashMap<String, String>> usersList; private static final String USERS_URL = "http://people.eecs.ku.edu/~kwu96/ATeamScripts/list_customers.php"; private static final String TAG_SUCCESS = "success"; private static final String TAG_USERS = "users"; private static final String TAG_EMAIL = "email"; private static final String TAG_CARD = "card_number"; private static final String TAG_LICENSE = "license"; private static final String TAG_LICENSE_STATE = "license_state"; private static final String TAG_NAME = "name"; private static final String TAG_PHONE = "phone"; private static final String TAG_ADDRESS = "address"; private static final String TAG_ADDRESS2 = "address2"; private static final String TAG_CITY = "city"; private static final String TAG_STATE = "state"; private static final String TAG_ZIP = "zip"; JSONArray users = null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.view_users); usersList = new ArrayList<HashMap<String, String>>(); new LoadAllUsers().execute(); SessionManager session = new SessionManager(getApplicationContext()); String role = session.getRole(); if (role.equals("Sales") || role.equals("Manager")) { ListView lv = getListView(); lv.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { String email = (((TextView) view.findViewById(R.id.user_email_list)).getText().toString()) .substring(7); String name = ((TextView) view.findViewById(R.id.user_name_list)).getText().toString(); Intent ii = new Intent(getApplicationContext(), SalesUserMenu.class); ii.putExtra(TAG_EMAIL, email); ii.putExtra("key", ""); ii.putExtra(TAG_NAME, name); startActivity(ii); finish(); } }); } } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); return true; } class LoadAllUsers extends AsyncTask<String, String, String> { @Override protected void onPreExecute() { super.onPreExecute(); progressDialog = new ProgressDialog(SalesViewUsers.this); progressDialog.setMessage("Loading users..."); progressDialog.setIndeterminate(false); progressDialog.setCancelable(false); progressDialog.show(); } @Override protected String doInBackground(String... args) { List<NameValuePair> params = new ArrayList<NameValuePair>(); JSONObject json = jsonParser.makeHttpRequest(USERS_URL, "GET", params); Log.d("All Users: ", json.toString()); try { int success = json.getInt(TAG_SUCCESS); if (success == 1) { users = json.getJSONArray(TAG_USERS); // Go through each users in JSON for (int i = 0; i < users.length(); i++) { JSONObject c = users.getJSONObject(i); // Get the string from JSON String email = c.getString(TAG_EMAIL); String card_num = c.getString(TAG_CARD); String license = c.getString(TAG_LICENSE); String license_state = c.getString(TAG_LICENSE_STATE); String name = c.getString(TAG_NAME); String phone = c.getString(TAG_PHONE); String address = c.getString(TAG_ADDRESS); String address2 = c.getString(TAG_ADDRESS2); String city = c.getString(TAG_CITY); String state = c.getString(TAG_STATE); String zip = c.getString(TAG_ZIP); HashMap<String, String> map = new HashMap<String, String>(); // Store the strings map.put(TAG_EMAIL, "Email: ".concat(email)); map.put(TAG_CARD, "Card Number: ".concat(card_num.substring(card_num.length() - 4))); map.put(TAG_LICENSE, "Driver's License: ".concat(license)); map.put(TAG_LICENSE_STATE, "Issued In: ".concat(license_state)); map.put(TAG_NAME, name); map.put(TAG_PHONE, "Phone Number: ".concat(phone)); map.put(TAG_ADDRESS, "Street Address: ".concat(address)); map.put(TAG_ADDRESS2, "Street Address 2: ".concat(address2)); map.put(TAG_CITY, "Current City: ".concat(city)); map.put(TAG_STATE, "Current State: ".concat(state)); map.put(TAG_ZIP, "Current Zipcode: ".concat(zip)); usersList.add(map); } } else { // Not successful if the database is down Intent ii = new Intent(SalesViewUsers.this, MainMenu.class); Bundle b = new Bundle(); b.putString("employeeType", "Sales"); 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(SalesViewUsers.this, message, Toast.LENGTH_LONG).show(); } else { // Puts all the strings into the list runOnUiThread(new Runnable() { public void run() { ListAdapter adapter = new SimpleAdapter(SalesViewUsers.this, usersList, R.layout.listitem_user, new String[] { TAG_NAME, TAG_EMAIL, TAG_CARD, TAG_LICENSE, TAG_LICENSE_STATE, TAG_PHONE, TAG_ADDRESS, TAG_ADDRESS2, TAG_CITY, TAG_STATE, TAG_ZIP }, new int[] { R.id.user_name_list, R.id.user_email_list, R.id.user_cardnum_list, R.id.user_license_list, R.id.user_licensestate_list, R.id.user_phone_list, R.id.user_address_list, R.id.user_address2_list, R.id.user_city_list, R.id.user_state_list, R.id.user_zip_list }); setListAdapter(adapter); } }); } } } @Override public void onBackPressed() { Intent ii = new Intent(SalesViewUsers.this, MainMenu.class); Bundle b = new Bundle(); b.putString("employeeType", "Sales"); ii.putExtras(b); startActivity(ii); finish(); } }