Java tutorial
/* * Copyright 2013 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package in.co.scsonline.rafaqatrasool.jkssbnotifier; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.content.res.Configuration; import android.os.Bundle; import android.os.Handler; import android.preference.PreferenceManager; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.view.GravityCompat; import android.support.v4.widget.DrawerLayout; import android.support.v7.app.ActionBarActivity; import android.support.v7.app.ActionBarDrawerToggle; import android.util.Log; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.ImageView; import android.widget.ListAdapter; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast; import com.google.android.gms.ads.AdRequest; import com.google.android.gms.ads.AdView; import com.kobakei.ratethisapp.RateThisApp; import com.madx.updatechecker.lib.UpdateRunnable; import java.sql.SQLException; import java.util.ArrayList; /** * This example illustrates a common usage of the DrawerLayout widget * in the Android support library. * <p/> * <p>When a navigation (left) drawer is present, the host activity should detect presses of * the action bar's Up affordance as a signal to open and close the navigation drawer. The * ActionBarDrawerToggle facilitates this behavior. * Items within the drawer should fall into one of two categories:</p> * <p/> * <ul> * <li><strong>View switches</strong>. A view switch follows the same basic policies as * list or tab navigation in that a view switch does not create navigation history. * This pattern should only be used at the root activity of a task, leaving some form * of Up navigation active for activities further down the navigation hierarchy.</li> * <li><strong>Selective Up</strong>. The drawer allows the user to choose an alternate * parent for Up navigation. This allows a user to jump across an app's navigation * hierarchy at will. The application should treat this as it treats Up navigation from * a different task, replacing the current task stack using TaskStackBuilder or similar. * This is the only form of navigation drawer that should be used outside of the root * activity of a task.</li> * </ul> * <p/> * <p>Right side drawers should be used for actions, not navigation. This follows the pattern * established by the Action Bar that navigation should be to the left and actions to the right. * An action should be an operation performed on the current contents of the window, * for example enabling or disabling a data overlay on top of the current content.</p> */ public class MainActivity extends ActionBarActivity implements FragmentManager.OnBackStackChangedListener, NotificationsFragment.readCounterListener { private DrawerLayout mDrawerLayout; private ListView mDrawerList; private ActionBarDrawerToggle mDrawerToggle; private CharSequence mDrawerTitle; private CharSequence mTitle; private String[] navigationTitles; private int[] icons = { R.drawable.ic_notification_grey, R.drawable.ic_selection_grey, R.drawable.ic_r_r_grey, R.drawable.ic_office_order_grey, R.drawable.ic_jobs_grey, R.drawable.ic_login_grey, R.drawable.ic_syallabus_grey, R.drawable.ic_about_us_grey }; private int[] iconsSelected = { R.drawable.ic_notification_selected, R.drawable.ic_selection_selected, R.drawable.ic_r_r_selected, R.drawable.ic_office_order_selected, R.drawable.ic_jobs_selected, R.drawable.ic_login_selected, R.drawable.ic_syallabus_selected, R.drawable.ic_about_us_selected }; AlarmReceiver alarm = new AlarmReceiver(); private ArrayList<Integer> notificationsCount; ArrayAdapter<String> drawerListAdapter; //Contsructor to pass the context to make toast when in fetchdata function doc return null exception Parser obj = new Parser(this); //Tracker for analytics // private Tracker mTracker; @Override protected void onStart() { super.onStart(); /*TODO-Optimise this code below for better performance * frequent database query is not good and find a way to Use notifyDataSetChanged to reflect * notification count in a better way*/ notificationsCount = new ArrayList<>(); DbManage dbManage = new DbManage(this); try { dbManage.open(); if (dbManage.getNotificationsCount("no", "notifications") != 0) //check if the method worked to return any count notificationsCount.add(dbManage.getNotificationsCount("no", "notifications")); //add the counts in the array and add 0 for the rest else notificationsCount.add(0); if (dbManage.getNotificationsCount("no", "selections") != 0) notificationsCount.add(dbManage.getNotificationsCount("no", "selections")); else notificationsCount.add(0); if (dbManage.getNotificationsCount("no", "releaseRecommendations") != 0) notificationsCount.add(dbManage.getNotificationsCount("no", "releaseRecommendations")); else notificationsCount.add(0); if (dbManage.getNotificationsCount("no", "officeOrders") != 0) notificationsCount.add(dbManage.getNotificationsCount("no", "officeOrders")); else notificationsCount.add(0); } catch (SQLException e) { e.printStackTrace(); } dbManage.close(); //Monitor launch times and interval from installation RateThisApp.onStart(this); //if the criteria is satisfied the dialog will show up RateThisApp.showRateDialogIfNeeded(this); } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //ads code start AdView mAdView = (AdView) findViewById(R.id.adView); if (ConnectionUtils.isOnline(MainActivity.this)) { mAdView = (AdView) findViewById(R.id.adView); AdRequest adRequest = new AdRequest.Builder().build(); mAdView.loadAd(adRequest); } else { mAdView.setVisibility(View.GONE); } //ads code end //callback for rate this app dialog RateThisApp.Config config = new RateThisApp.Config(3, 3); RateThisApp.init(config); /*//analytics code start // Obtain the shared Tracker instance. Analytics application = (Analytics) getApplication(); mTracker = application.getDefaultTracker(); //analytics code end*/ //background update check code start new UpdateRunnable(this, new Handler()).start();//using https://github.com/danielemaddaluno/Android-Update-Checker/ //background update check code end PreferenceManager.setDefaultValues(this, R.xml.settings, false);//set the default values that are provided in xml mTitle = mDrawerTitle = getTitle(); navigationTitles = getResources().getStringArray(R.array.navigation_titles_array); mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); mDrawerList = (ListView) findViewById(R.id.left_drawer); mDrawerList.setChoiceMode(ListView.CHOICE_MODE_SINGLE); // set a custom shadow that overlays the main content when the drawer opens mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START); // set up the drawer's list view with items and click listener drawerListAdapter = new MyListAdapter(); mDrawerList.setAdapter(drawerListAdapter); mDrawerList.setOnItemClickListener(new DrawerItemClickListener()); // enable ActionBar app icon to behave as action to toggle nav drawer getSupportActionBar().setDisplayHomeAsUpEnabled(true); getSupportActionBar().setHomeButtonEnabled(true); // ActionBarDrawerToggle ties together the the proper interactions // between the sliding drawer and the action bar app icon mDrawerToggle = new ActionBarDrawerToggle(this, /* host Activity */ mDrawerLayout, /* DrawerLayout object */ // R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */ R.string.drawer_open, /* "open drawer" description for accessibility */ R.string.drawer_close /* "close drawer" description for accessibility */ ) { public void onDrawerClosed(View view) { getSupportActionBar().setTitle(mTitle); invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu() } public void onDrawerOpened(View drawerView) { getSupportActionBar().setTitle(mDrawerTitle); invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu() drawerListAdapter.notifyDataSetChanged();//refresh the drawer list } }; mDrawerLayout.setDrawerListener(mDrawerToggle); if (savedInstanceState == null) { selectItem(0); } } private class MyListAdapter extends ArrayAdapter<String> { public MyListAdapter() { super(MainActivity.this, R.layout.drawer_list_item, android.R.id.text1, navigationTitles); } @Override public View getView(int position, View convertView, ViewGroup parent) { View v = super.getView(position, convertView, parent); ImageView icon = (ImageView) v.findViewById(R.id.row_icon); TextView countTextView = (TextView) v.findViewById(R.id.notification_count); if (!notificationsCount.isEmpty() && position < 4) { if (notificationsCount.get(position) != 0) { String count = ""; count = String.valueOf(notificationsCount.get(position)); countTextView.setText(count); countTextView.setBackgroundResource(R.drawable.badge_circle); } else { countTextView.setText(""); countTextView.setBackgroundResource(0); } } if (mDrawerList.isItemChecked(position)) { icon.setImageResource(iconsSelected[position]); } else { icon.setImageResource(icons[position]); } return v; } } @Override public boolean onCreateOptionsMenu(Menu menu) { MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.main, menu); return super.onCreateOptionsMenu(menu); } /* Called whenever we call invalidateOptionsMenu() */ @Override public boolean onPrepareOptionsMenu(Menu menu) { // If the nav drawer is open, hide action items related to the content view /* boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList); menu.findItem(R.id.action_websearch).setVisible(!drawerOpen);*/ return super.onPrepareOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { // The action bar home/up action should open or close the drawer. // ActionBarDrawerToggle will take care of this. if (mDrawerToggle.onOptionsItemSelected(item)) { return true; } // Handle action buttons switch (item.getItemId()) { case R.id.app_settings: Intent intent = new Intent(MainActivity.this, SettingsActivity.class); startActivity(intent); return true; case R.id.check_update: new UpdateRunnable(this, new Handler()).force(true).start(); return true; default: return super.onOptionsItemSelected(item); } } @Override public void onBackPressed() { /*if(getSupportFragmentManager().getBackStackEntryCount()==0) { setTitle(navigationTitles[0]); //When backstack is empty then set title to first title mDrawerList.setItemChecked(0, true); //highlight the first item. }*/ if (mDrawerLayout.isDrawerOpen(GravityCompat.START)) { mDrawerLayout.closeDrawer(GravityCompat.START); } else { if (getSupportFragmentManager().getBackStackEntryCount() == 1) { super.onBackPressed(); setTitle(navigationTitles[0]); //When backstack has one entry then set title to first title as its not updated by onBackStackChanged Listener mDrawerList.setItemChecked(0, true); //highlight the first item. } else super.onBackPressed();//Default behaviour of exiting the app. } } @Override public void onBackStackChanged() { //called when the BackStack changes //retrieve the current fragment on stack top use its tag to determine the title int position; int count = getSupportFragmentManager().getBackStackEntryCount(); if (count > 0) { position = Integer.parseInt(getSupportFragmentManager().getBackStackEntryAt(count - 1).getName()); setTitle(navigationTitles[position]); mDrawerList.setItemChecked(position, true);//update the selected item in drawer } } @Override public void readCount(int count, String Table) { //depending upon the table name decrease the corresponding count switch (Table) { case "notifications": if (notificationsCount.get(0) != 0) notificationsCount.set(0, notificationsCount.get(0) - count); break; case "selections": if (notificationsCount.get(1) != 0) notificationsCount.set(1, notificationsCount.get(1) - count); break; case "releaseRecommendations": if (notificationsCount.get(2) != 0) notificationsCount.set(2, notificationsCount.get(2) - count); break; case "officeOrders": if (notificationsCount.get(3) != 0) notificationsCount.set(3, notificationsCount.get(3) - count); break; default: break; } } /* The click listner for ListView in the navigation drawer */ private class DrawerItemClickListener implements ListView.OnItemClickListener { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { selectItem(position); } } private void selectItem(int position) { // update the main content by replacing fragments FragmentManager fragmentManager = getSupportFragmentManager(); fragmentManager.addOnBackStackChangedListener(this);//change listener to update the title //raaf begin if (position == 0) { Fragment fragment = new NotificationsFragment(); Bundle args = new Bundle(); args.putString("table_name", getResources().getStringArray(R.array.table_names)[position]); args.putString("div_id", getResources().getStringArray(R.array.div_ids)[position]); fragment.setArguments(args); //FragmentManager fragmentManager = getSupportFragmentManager(); fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit(); } else if (position == 4) { Fragment webViewFragment = new JobsFragment(); Bundle args = new Bundle(); args.putString("base_url", "http://www.jkssb.nic.in/Pages/Applicant/Jobs.aspx"); webViewFragment.setArguments(args); //FragmentManager fragmentManager = getSupportFragmentManager(); fragmentManager.beginTransaction().replace(R.id.content_frame, webViewFragment) .addToBackStack("" + position).commit(); } else if (position == 5) { Fragment webViewFragment = new LoginFragment(); Bundle args = new Bundle(); args.putString("base_url", "http://www.jkssb.nic.in/Pages/login.aspx"); webViewFragment.setArguments(args); //FragmentManager fragmentManager = getSupportFragmentManager(); fragmentManager.beginTransaction().replace(R.id.content_frame, webViewFragment) .addToBackStack("" + position).commit(); } else if (position == 6) { Fragment syllabusFragment = new SyllabusFragment(); //FragmentManager fragmentManager = getSupportFragmentManager(); fragmentManager.beginTransaction().replace(R.id.content_frame, syllabusFragment) .addToBackStack("" + position).commit(); } else if (position == 7) { Fragment aboutFragment = new AboutFragment(); //FragmentManager fragmentManager = getSupportFragmentManager(); fragmentManager.beginTransaction().replace(R.id.content_frame, aboutFragment) .addToBackStack("" + position).commit(); } else { Fragment fragment = new NotificationsFragment(); Bundle args = new Bundle(); args.putString("table_name", getResources().getStringArray(R.array.table_names)[position]); args.putString("div_id", getResources().getStringArray(R.array.div_ids)[position]); fragment.setArguments(args); fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).addToBackStack("" + position) .commit(); } //raaf end // update selected item and title, then close the drawer mDrawerList.setItemChecked(position, true); setTitle(navigationTitles[position]); mDrawerLayout.closeDrawer(mDrawerList); } @Override public void setTitle(CharSequence title) { mTitle = title; getSupportActionBar().setTitle(mTitle); } /** * When using the ActionBarDrawerToggle, you must call it during * onPostCreate() and onConfigurationChanged()... */ @Override protected void onPostCreate(Bundle savedInstanceState) { super.onPostCreate(savedInstanceState); // Sync the toggle state after onRestoreInstanceState has occurred. mDrawerToggle.syncState(); } @Override public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); // Pass any configuration change to the drawer toggles mDrawerToggle.onConfigurationChanged(newConfig); } @Override protected void onResume() { super.onResume(); //Run just once //Start the notification alarm when run for the first time SharedPreferences pref = this.getSharedPreferences(this.getPackageName(), this.MODE_PRIVATE); if (pref.getBoolean("alarmFlag", true)) { //IF alarm is not set (when run for first time) as this //shared pref doesn't exist so supply default value "true" Log.d("RUNNING ALARM FOR IST", "TIME--DEFAULT VALUE"); alarm.setAlarm(this); SharedPreferences.Editor edit = pref.edit(); edit.putBoolean("alarmFlag", false);//set shared preference to false so it doesnt get executed the next time edit.commit(); } //End Run just once /* //test to send analytics data of activity // [START screen_view_hit] mTracker.setScreenName("MainActivity"); mTracker.send(new HitBuilders.ScreenViewBuilder().build()); // [END screen_view_hit]*/ } }