Java tutorial
package com.kyat.DJbooth; import info.kyat.DJBooth.adapter.NavDrawerListAdapter; import info.kyat.DJBooth.model.NavDrawerItem; import java.util.ArrayList; import android.app.Activity; import android.app.AlertDialog; import android.app.Fragment; import android.app.FragmentManager; import android.content.DialogInterface; import android.content.Intent; import android.content.res.Configuration; import android.content.res.TypedArray; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.ActionBarDrawerToggle; import android.support.v4.widget.DrawerLayout; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.AdapterView; import android.widget.ListView; import android.widget.Toast; public class MainActivity extends Activity { private DrawerLayout mDrawerLayout; private ListView mDrawerList; private ActionBarDrawerToggle mDrawerToggle; // nav drawer title private CharSequence mDrawerTitle; // used to store app title private CharSequence mTitle; // slide menu items private String[] navMenuTitles; private TypedArray navMenuIcons; private ArrayList<NavDrawerItem> navDrawerItems; private NavDrawerListAdapter adapter; /* ////////////////////////////////// / Begin code for NewSnap section / ////////////////////////////////// */ /* ////////////////////////////////// / Begin code for Account section / ////////////////////////////////// */ /* ////////////////////////////////// / Begin Google Calendar integration / ////////////////////////////////// */ /* ////////////////////////////////// / Begin code for help section / ////////////////////////////////// */ //function for the report a bug button public void reportBug(View reportBug) { Intent i = new Intent(Intent.ACTION_SEND); i.setType("message/rfc822"); i.putExtra(Intent.EXTRA_EMAIL, new String[] { getResources().getString(R.string.contactEmail) }); i.putExtra(Intent.EXTRA_SUBJECT, "RMT Tools Feedback"); i.putExtra(Intent.EXTRA_TEXT, "Your feedback here..."); try { startActivity(Intent.createChooser(i, "Send Feedback")); } catch (android.content.ActivityNotFoundException ex) { Toast.makeText(this, "There are no email clients installed.", Toast.LENGTH_SHORT).show(); } } //function to display terms and license information public void showTerms(View showTerms) { AlertDialog.Builder alert = new AlertDialog.Builder(this); alert.setTitle(getResources().getString(R.string.termsTitle)); //this should really be a string... alert.setMessage(getResources().getString(R.string.termsMessage)); alert.setPositiveButton("View Full License", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { //open the license page Uri uri = Uri.parse("http://creativecommons.org/licenses/by-sa/4.0/legalcode"); Intent intent = new Intent(Intent.ACTION_VIEW, uri); startActivity(intent); } }); alert.setNegativeButton("Close", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { //Close } }); alert.show(); } /* ////////////////////////////////// / Begin menu code / ////////////////////////////////// */ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Show the "What's New" screen once for each new release of the application new WhatsNewScreen(this).show(); mTitle = mDrawerTitle = getTitle(); // load slide menu items navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items); // nav drawer icons from resources navMenuIcons = getResources().obtainTypedArray(R.array.nav_drawer_icons); mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); mDrawerList = (ListView) findViewById(R.id.list_slidermenu); navDrawerItems = new ArrayList<NavDrawerItem>(); // adding nav drawer items to array // counters will need to point to a variable showing unread items later. for now we can just pretend~ // Newsfeed navDrawerItems.add(new NavDrawerItem(navMenuTitles[0], navMenuIcons.getResourceId(0, -1), true, "20+")); // Snaps navDrawerItems.add(new NavDrawerItem(navMenuTitles[1], navMenuIcons.getResourceId(1, -1))); // Planner navDrawerItems.add(new NavDrawerItem(navMenuTitles[2], navMenuIcons.getResourceId(2, -1))); // Leaderboard navDrawerItems.add(new NavDrawerItem(navMenuTitles[3], navMenuIcons.getResourceId(3, -1))); // Badges navDrawerItems.add(new NavDrawerItem(navMenuTitles[4], navMenuIcons.getResourceId(4, -1))); // Vacancies navDrawerItems.add(new NavDrawerItem(navMenuTitles[5], navMenuIcons.getResourceId(5, -1), true, "2")); // My Account navDrawerItems.add(new NavDrawerItem(navMenuTitles[6], navMenuIcons.getResourceId(6, -1))); // Settings navDrawerItems.add(new NavDrawerItem(navMenuTitles[7], navMenuIcons.getResourceId(7, -1))); // Help navDrawerItems.add(new NavDrawerItem(navMenuTitles[8], navMenuIcons.getResourceId(8, -1))); // Recycle the typed array navMenuIcons.recycle(); mDrawerList.setOnItemClickListener(new SlideMenuClickListener()); // setting the nav drawer list adapter adapter = new NavDrawerListAdapter(getApplicationContext(), navDrawerItems); mDrawerList.setAdapter(adapter); // enabling action bar app icon and behaving it as toggle button getActionBar().setDisplayHomeAsUpEnabled(true); getActionBar().setHomeButtonEnabled(true); mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.drawable.ic_drawer, //nav menu toggle icon R.string.app_name, // nav drawer open - description for accessibility R.string.app_name // nav drawer close - description for accessibility ) { public void onDrawerClosed(View view) { getActionBar().setTitle(mTitle); // calling onPrepareOptionsMenu() to show action bar icons invalidateOptionsMenu(); } public void onDrawerOpened(View drawerView) { getActionBar().setTitle(mDrawerTitle); // calling onPrepareOptionsMenu() to hide action bar icons invalidateOptionsMenu(); } }; mDrawerLayout.setDrawerListener(mDrawerToggle); if (savedInstanceState == null) { // on first time display view for first nav item displayView(0); } } /** * Slide menu item click listener * */ private class SlideMenuClickListener implements ListView.OnItemClickListener { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { // display view for selected nav drawer item displayView(position); } } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // toggle nav drawer on selecting action bar app icon/title if (mDrawerToggle.onOptionsItemSelected(item)) { return true; } // Handle action bar actions click switch (item.getItemId()) { case R.id.action_settings: return true; default: return super.onOptionsItemSelected(item); } } /* * * Called when invalidateOptionsMenu() is triggered */ @Override public boolean onPrepareOptionsMenu(Menu menu) { // if nav drawer is opened, hide the action items boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList); menu.findItem(R.id.action_settings).setVisible(!drawerOpen); return super.onPrepareOptionsMenu(menu); } /** * Diplaying fragment view for selected nav drawer list item * */ private void displayView(int position) { // update the main content by replacing fragments Fragment fragment = null; switch (position) { case 0: fragment = new HomeFragment(); break; case 1: fragment = new SnapFragment(); break; case 2: fragment = new PlannerFragment(); break; case 3: fragment = new LeaderboardsFragment(); break; case 4: fragment = new BadgesFragment(); break; case 5: fragment = new VacanciesFragment(); break; case 6: fragment = new AccountFragment(); break; case 7: fragment = new SettingsFragment(); break; case 8: fragment = new HelpFragment(); break; default: break; } if (fragment != null) { FragmentManager fragmentManager = getFragmentManager(); fragmentManager.beginTransaction().replace(R.id.frame_container, fragment).commit(); // update selected item and title, then close the drawer mDrawerList.setItemChecked(position, true); mDrawerList.setSelection(position); setTitle(navMenuTitles[position]); mDrawerLayout.closeDrawer(mDrawerList); } else { // error in creating fragment Log.e("MainActivity", "Error in creating fragment"); } } @Override public void setTitle(CharSequence title) { mTitle = title; getActionBar().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 toggls mDrawerToggle.onConfigurationChanged(newConfig); } }