Java tutorial
/* * Copyright 2012 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 com.ezevents.android.app; import java.util.ArrayList; import java.util.List; import com.google.android.gms.games.internal.api.NotificationsImpl; import android.app.ActionBar; import android.app.FragmentTransaction; import android.app.SearchManager; import android.content.Context; import android.content.Intent; import android.content.res.Configuration; import android.os.Bundle; import android.support.v4.app.ActionBarDrawerToggle; 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.GravityCompat; import android.support.v4.view.ViewPager; import android.support.v4.widget.DrawerLayout; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ArrayAdapter; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast; import android.widget.AdapterView.OnItemLongClickListener; public class MainActivity extends FragmentActivity implements ActionBar.TabListener { public static Intent intent; public static ListView notificationsListView; public static List<String> notificationsList = new ArrayList<String>(); public static Context cont; public static List<String> myEventsList; public static ArrayAdapter<String> myEventsListAdapter; @Override public boolean onCreateOptionsMenu(Menu menu) { MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.menu_actions, menu); return super.onCreateOptionsMenu(menu); } /* 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); } } @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); } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle presses on the action bar items int id = item.getItemId(); if (id == R.id.action_create_event) { create_event(); return true; } else if (id == R.id.action_settings) { // //openSettings(); return true; } else return super.onOptionsItemSelected(item); } private void create_event() { Intent intent = getIntent(); intent.setClass(this, EventFirstStepActivity.class); //attemptLogin(); startActivity(intent); } /** * The {@link android.support.v4.view.PagerAdapter} that will provide fragments for each of the * three primary sections of the app. 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}. */ AppSectionsPagerAdapter mAppSectionsPagerAdapter; /** * The {@link ViewPager} that will display the three primary sections of the app, one at a * time. */ ViewPager mViewPager; private DrawerLayout mDrawerLayout; private ListView mDrawerList; private ActionBarDrawerToggle mDrawerToggle; private CharSequence mDrawerTitle; private CharSequence mTitle; private String[] mPlanetTitles; private void selectItem(int position) { // update the main content by replacing fragments //Fragment fragment = new PlanetFragment(); Bundle args = new Bundle(); //args.putInt(PlanetFragment.ARG_PLANET_NUMBER, position); //fragment.setArguments(args); android.app.FragmentManager fragmentManager = getFragmentManager(); //fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit(); // update selected item and title, then close the drawer mDrawerList.setItemChecked(position, true); setTitle(mPlanetTitles[position]); mDrawerLayout.closeDrawer(mDrawerList); } @Override public void setTitle(CharSequence title) { mTitle = title; getActionBar().setTitle(mTitle); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); cont = this; intent = getIntent(); setContentView(R.layout.activity_main); mTitle = mDrawerTitle = getTitle(); mPlanetTitles = getResources().getStringArray(R.array.planets_array); mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); mDrawerList = (ListView) findViewById(R.id.left_drawer); // 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 mDrawerList.setAdapter(new ArrayAdapter<String>(this, R.layout.drawer_list_item, mPlanetTitles)); mDrawerList.setOnItemClickListener(new DrawerItemClickListener()); // 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 */ ) { @Override public void onDrawerClosed(View view) { getActionBar().setTitle(mTitle); invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu() } @Override public void onDrawerOpened(View drawerView) { getActionBar().setTitle(mDrawerTitle); invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu() } }; mDrawerLayout.setDrawerListener(mDrawerToggle); getActionBar().setDisplayHomeAsUpEnabled(true); getActionBar().setHomeButtonEnabled(true); // Create the adapter that will return a fragment for each of the three primary sections // of the app. mAppSectionsPagerAdapter = new AppSectionsPagerAdapter(getSupportFragmentManager()); // Set up the action bar. final ActionBar actionBar = getActionBar(); // Specify that the Home/Up button should not be enabled, since there is no hierarchical // parent. //actionBar.setHomeButtonEnabled(false); // Specify that we will be displaying tabs in the action bar. actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); // Set up the ViewPager, attaching the adapter and setting up a listener for when the // user swipes between sections. mViewPager = (ViewPager) findViewById(R.id.pager); mViewPager.setAdapter(mAppSectionsPagerAdapter); mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() { @Override public void onPageSelected(int position) { // When swiping between different app sections, select the corresponding tab. // We can also use ActionBar.Tab#select() to do this if we have a reference to the // Tab. actionBar.setSelectedNavigationItem(position); } }); // // For each of the sections in the app, add a tab to the action bar. // for (int i = 0; i < mAppSectionsPagerAdapter.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 // // listener for when this tab is selected. // // } String sec1 = "My Events"; String sec2 = "Popular Events"; String sec3 = "Notifications"; actionBar.addTab(actionBar.newTab().setText(sec1).setTabListener(this)); actionBar.addTab(actionBar.newTab().setText(sec2).setTabListener(this)); actionBar.addTab(actionBar.newTab().setText(sec3).setTabListener(this)); } @Override public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { } @Override public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { // When the given tab is selected, switch to the corresponding page in the ViewPager. mViewPager.setCurrentItem(tab.getPosition()); } @Override public void onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) { } /** * A {@link FragmentPagerAdapter} that returns a fragment corresponding to one of the primary * sections of the app. */ public static class AppSectionsPagerAdapter extends FragmentPagerAdapter { public AppSectionsPagerAdapter(FragmentManager fm) { super(fm); } @Override public Fragment getItem(int i) { switch (i) { case 0: // The first section of the app is the most interesting -- it offers // a launchpad into the other demonstrations in this example application return new LaunchpadSectionFragment(); case 2: // The first section of the app is the most interesting -- it offers // a launchpad into the other demonstrations in this example application. return new InvitedSectionFragment(); default: // The other sections of the app are dummy placeholders. Fragment fragment = new DummySectionFragment(); Bundle args = new Bundle(); args.putInt(DummySectionFragment.ARG_SECTION_NUMBER, i + 1); fragment.setArguments(args); return fragment; } } @Override public int getCount() { return 3; } // @Override // public int getCount() { // return 5; // } // @Override // public CharSequence getPageTitle(int position) { // return "Section " + (position + 1); // } } /** * A fragment that launches other parts of the demo application. */ public static class LaunchpadSectionFragment extends Fragment { @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_section_launchpad, container, false); ListView myEventsListview = (ListView) rootView.findViewById(R.id.my_events); myEventsList = new ArrayList<String>(); myEventsList.add("Festa de aniversrio do Gui"); myEventsList.add("Jogo de Futebol na Alameda"); myEventsList.add("Jantar de Despedida da Joana"); myEventsListAdapter = new ArrayAdapter<String>(this.getActivity(), R.layout.event, myEventsList); new AsyncFetchMyEvents().execute(); myEventsListview.setAdapter(myEventsListAdapter); myEventsListview.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> adapter, View view, int index, long arg3) { String event = myEventsList.get(index); new AsyncGetTodo(intent.getStringExtra("Username")).execute(event); } }); // Demonstration of a collection-browsing activity. // rootView.findViewById(R.id.demo_collection_button) // .setOnClickListener(new View.OnClickListener() { // @Override // public void onClick(View view) { // Intent intent = new Intent(getActivity(), CollectionDemoActivity.class); // startActivity(intent); // } // }); // // // Demonstration of navigating to external activities. // rootView.findViewById(R.id.demo_external_activity) // .setOnClickListener(new View.OnClickListener() { // @Override // public void onClick(View view) { // // Create an intent that asks the user to pick a photo, but using // // FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET, ensures that relaunching // // the application from the device home screen does not return // // to the external activity. // Intent externalActivityIntent = new Intent(Intent.ACTION_PICK); // externalActivityIntent.setType("image/*"); // externalActivityIntent.addFlags( // Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); // startActivity(externalActivityIntent); // } // }); return rootView; } } public static ArrayAdapter<String> notificationsAdapter; public static class InvitedSectionFragment extends Fragment { @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_section_launchpad, container, false); notificationsListView = (ListView) rootView.findViewById(R.id.my_events); notificationsAdapter = new ArrayAdapter<String>(this.getActivity(), R.layout.event, notificationsList); notificationsAdapter.notifyDataSetChanged(); notificationsListView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> adapter, View view, int index, long arg3) { String notification = notificationsList.get(index); new AsyncGetTodo(intent.getStringExtra("Username")).execute(notification); } }); notificationsList.clear(); notificationsListView.setAdapter(notificationsAdapter); new AsyncFetch().execute(intent.getStringExtra("Username")); return rootView; } } /** * A dummy fragment representing a section of the app, but that simply displays dummy text. */ public static class DummySectionFragment extends Fragment { public static final String ARG_SECTION_NUMBER = "section_number"; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_section_dummy, container, false); Bundle args = getArguments(); ((TextView) rootView.findViewById(android.R.id.text1)) .setText(getString(R.string.dummy_section_text, args.getInt(ARG_SECTION_NUMBER))); return rootView; } } }