Java tutorial
/** * ORcycle, Copyright 2014, 2015, PSU Transportation, Technology, and People Lab. * * @author Robin Murray <robin5@pdx.edu> (code) * @author Miguel Figliozzi <figliozzi@pdx.edu> and ORcycle team (general app * design and features, report questionnaires and new ORcycle features) * * For more information on the project, go to * http://www.pdx.edu/transportation-lab/orcycle and http://www.pdx.edu/transportation-lab/app-development * * Updated/modified for Oregon pilot study and app deployment. * * ORcycle is free software: you can redistribute it and/or modify it under the * terms of the GNU General Public License as published by the Free Software * Foundation, either version 3 of the License, or any later version. * ORcycle is distributed in the hope that it will be useful, but WITHOUT ANY * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR * A PARTICULAR PURPOSE. See the GNU General Public License for more details. * You should have received a copy of the GNU General Public License along with * ORcycle. If not, see <http://www.gnu.org/licenses/>. * */ package edu.pdx.cecs.orcycle; import java.util.Locale; import android.app.ActionBar; import android.app.FragmentTransaction; import android.content.Intent; import android.content.pm.ActivityInfo; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentPagerAdapter; import android.support.v4.view.ViewPager; import android.util.Log; import android.view.ActionMode; import android.view.KeyEvent; import android.view.Menu; import android.view.MenuItem; public class TabsConfig extends FragmentActivity implements ActionBar.TabListener { private static final String MODULE_TAG = "TabsConfig"; public static final String EXTRA_KEEP_ME = "EXTRA_KEEP_ME"; public static final String EXTRA_SHOW_FRAGMENT = "EXTRA_SHOW_FRAGMENT"; public static final String EXTRA_DSA_ACTIVITY = "EXTRA_DSA_ACTIVITY"; public static final String EXTRA_DSA_BUTTON_PRESSED = "dsa_button_pressed"; public static final String EXTRA_DSA_DIALOG_ID = "dsa_dialog_id"; public static final int FRAG_INDEX_MAIN_INPUT = 0; public static final int FRAG_INDEX_SAVED_TRIPS = 1; public static final int FRAG_INDEX_SAVED_NOTES = 2; public static final int FRAG_INDEX_SETTINGS = 3; private int fragmentToShow = FRAG_INDEX_MAIN_INPUT; private MyApplication myApp; /** * The {@link android.support.v4.view.PagerAdapter} that will provide * fragments for each of the sections. We use a * {@link android.support.v4.app.FragmentPagerAdapter} derivative, which * will keep every loaded fragment in memory. If this becomes too memory * intensive, it may be best to switch to a * {@link android.support.v4.app.FragmentStatePagerAdapter}. */ SectionsPagerAdapter mSectionsPagerAdapter; /** * The {@link ViewPager} that will host the section contents. */ ViewPager mViewPager; Fragment fragment1; Fragment fragment2; Fragment fragment3; Fragment fragment4; // ********************************************************************************* // * Fragment Implementation // ********************************************************************************* @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); try { myApp = MyApplication.getInstance(); myApp.setRunning(true); myApp.clearReminderNotifications(); setContentView(R.layout.tabs_config); Log.v(MODULE_TAG, "Cycle: TabsConfig onCreate"); setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); // Toast.makeText(this, "Tab Created", Toast.LENGTH_LONG).show(); fragment1 = new FragmentMainInput(); fragment2 = new FragmentSavedTripsSection(); fragment3 = new FragmentSavedNotesSection(); //fragment4 = new FragmentUserInfo(); fragment4 = new FragmentSettings(); // Set up the action bar. final ActionBar actionBar = getActionBar(); actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); actionBar.setBackgroundDrawable(getResources().getDrawable(R.color.psu_green)); // Create the adapter that will return a fragment for each of the four // primary sections of the app. mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager()); // Set up the ViewPager with the sections adapter. mViewPager = (ViewPager) findViewById(R.id.pager); mViewPager.setAdapter(mSectionsPagerAdapter); // When swiping between different sections, select the corresponding // tab. We can also use ActionBar.Tab#select() to do this if we have // a reference to the Tab. mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() { @Override public void onPageSelected(int position) { actionBar.setSelectedNavigationItem(position); } }); // For each of the sections in the app, add a tab to the action bar. for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) { // Create a tab with text corresponding to the page title defined by // the adapter. Also specify this Activity object, which implements // the TabListener interface, as the callback (listener) for when // this tab is selected. actionBar.addTab( actionBar.newTab().setText(mSectionsPagerAdapter.getPageTitle(i)).setTabListener(this)); } mViewPager.setOffscreenPageLimit(4); Intent intent; Bundle bundle; if (null != (intent = getIntent())) { if (null != (bundle = intent.getExtras())) { fragmentToShow = bundle.getInt(TabsConfig.EXTRA_SHOW_FRAGMENT, FRAG_INDEX_MAIN_INPUT); } } } catch (Exception ex) { Log.e(MODULE_TAG, ex.getMessage()); } } @Override public void onResume() { super.onResume(); Log.v(MODULE_TAG, "Cycle: TabsConfig onResume"); try { final ActionBar actionBar = getActionBar(); actionBar.selectTab(actionBar.getTabAt(fragmentToShow)); myApp.ResumeNotification(); } catch (Exception ex) { Log.e(MODULE_TAG, ex.getMessage()); } } @Override public void onPause() { super.onPause(); Log.v(MODULE_TAG, "Cycle: TabsConfig onPause"); } @Override public void onDestroy() { super.onDestroy(); Log.v(MODULE_TAG, "Cycle: TabsConfig onDestroy"); try { myApp.clearRecordingNotifications(); } catch (Exception ex) { Log.e(MODULE_TAG, ex.getMessage()); } } // 2.0 and above @Override public void onBackPressed() { moveTaskToBack(true); } // Before 2.0 @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { moveTaskToBack(true); return true; } return super.onKeyDown(keyCode, event); } // ********************************************************************************* // * ActionBar.TabListener Implementation // ********************************************************************************* @Override public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { try { // When the given tab is selected, switch to the corresponding page in // the ViewPager. // Toast.makeText(this, "TabSelected", Toast.LENGTH_LONG).show(); mViewPager.setCurrentItem(tab.getPosition()); final ActionBar actionBar = getActionBar(); switch (tab.getPosition()) { case 0: actionBar.setDisplayShowTitleEnabled(false); actionBar.setDisplayShowHomeEnabled(false); break; case 1: actionBar.setDisplayShowTitleEnabled(true); actionBar.setDisplayShowHomeEnabled(true); actionBar.setTitle(R.string.app_name); break; case 2: actionBar.setDisplayShowTitleEnabled(true); actionBar.setDisplayShowHomeEnabled(true); actionBar.setTitle(R.string.app_name); break; case 3: actionBar.setDisplayShowTitleEnabled(true); actionBar.setDisplayShowHomeEnabled(true); actionBar.setTitle(R.string.app_name); break; } } catch (Exception ex) { Log.e(MODULE_TAG, ex.getMessage()); } } @Override public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { mViewPager.startActionMode(new ActionMode.Callback() { @Override public boolean onPrepareActionMode(ActionMode mode, Menu menu) { // TODO Auto-generated method stub return false; } @Override public void onDestroyActionMode(ActionMode mode) { // TODO Auto-generated method stub } @Override public boolean onCreateActionMode(ActionMode mode, Menu menu) { // TODO Auto-generated method stub return false; } @Override public boolean onActionItemClicked(ActionMode mode, MenuItem item) { // TODO Auto-generated method stub return false; } }); } @Override public void onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { } // ********************************************************************************* // * SectionsPagerAdapter // ********************************************************************************* /** * A {@link FragmentPagerAdapter} that returns a fragment corresponding to * one of the sections/tabs/pages. */ public class SectionsPagerAdapter extends FragmentPagerAdapter { public SectionsPagerAdapter(FragmentManager fm) { super(fm); } @Override public Fragment getItem(int position) { switch (position) { case FRAG_INDEX_MAIN_INPUT: return fragment1; case FRAG_INDEX_SAVED_TRIPS: return fragment2; case FRAG_INDEX_SAVED_NOTES: return fragment3; case FRAG_INDEX_SETTINGS: return fragment4; } return null; } @Override public int getCount() { // Show 4 total pages. return 4; } @Override public CharSequence getPageTitle(int position) { Locale l = Locale.getDefault(); switch (position) { case 0: return getString(R.string.title_section1).toUpperCase(l); case 1: return getString(R.string.title_section2).toUpperCase(l); case 2: return getString(R.string.title_section3).toUpperCase(l); case 3: return getString(R.string.title_section4).toUpperCase(l); } return null; } } }