Java tutorial
/* * Copyright (C) 2014 Philippine Android Developers Community * * 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 ph.devcon.android.attendee; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.database.Cursor; import android.graphics.Color; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.view.MenuItemCompat; import android.support.v4.widget.SimpleCursorAdapter; import android.support.v4.widget.SwipeRefreshLayout; import android.support.v7.widget.SearchView; import android.text.Html; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.ListView; import android.widget.TextView; import com.google.common.base.Optional; import com.nhaarman.listviewanimations.appearance.simple.AlphaInAnimationAdapter; import java.util.ArrayList; import java.util.List; import javax.inject.Inject; import butterknife.ButterKnife; import butterknife.InjectView; import butterknife.OnItemClick; import de.greenrobot.event.EventBus; import de.greenrobot.event.util.AsyncExecutor; import ph.devcon.android.DevConApplication; import ph.devcon.android.R; import ph.devcon.android.attendee.adapter.AttendeeCursorAdapter; import ph.devcon.android.attendee.db.Attendee; import ph.devcon.android.attendee.db.FTSAttendee; import ph.devcon.android.attendee.event.FetchedAttendeeListEvent; import ph.devcon.android.attendee.event.SearchedAttendeeListEvent; import ph.devcon.android.attendee.service.AttendeeService; import ph.devcon.android.navigation.BaseDevConActivity; import ph.devcon.android.navigation.MainActivity; import ph.devcon.android.util.Util; /** * Created by lope on 10/9/14. */ public class AttendeesFragment extends Fragment implements SwipeRefreshLayout.OnRefreshListener { static String lastQuery = ""; @InjectView(R.id.lvw_attendee) ListView lvwAttendee; @Inject AttendeeService attendeeService; @Inject EventBus eventBus; @Inject FTSAttendee ftsAttendee; @InjectView(R.id.cont_attendee) SwipeRefreshLayout swipeLayout; AttendeeCursorAdapter attendeeAdapter; AlphaInAnimationAdapter animationAdapter; @OnItemClick(R.id.lvw_attendee) public void onItemClick(int position) { Intent intent = new Intent(getActivity(), AttendeeDetailsActivity.class); intent.putExtra(AttendeeDetailsActivity.POSITION, position); intent.putIntegerArrayListExtra(AttendeeDetailsActivity.ID_ITEMS, getIds()); startActivity(intent); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(true); } @Override public void onResume() { super.onResume(); if (!Util.isNullOrEmpty(lastQuery)) search(lastQuery); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_attendee, container, false); DevConApplication.injectMembers(this); ButterKnife.inject(this, rootView); if (!eventBus.isRegistered(this)) { eventBus.register(this); } initSwipeLayout(); initAnimation(); if (attendeeService.isCacheValid()) { attendeeService.populateFromCache(getLoaderManager(), savedInstanceState); } else { attendeeService.populateFromAPI(); new AlertDialog.Builder(getActivity()).setTitle("Whoa!") .setMessage("We've got a lot of attendees." + " Lemme just get them for you this one time!") .setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { // do nothing } }).setIcon(R.drawable.ic_launcher).show(); } return rootView; } public void search(final String query) { AsyncExecutor.Builder builder = AsyncExecutor.builder(); AsyncExecutor executor = builder.build(); executor.execute(new AsyncExecutor.RunnableEx() { @Override public void run() throws Exception { Cursor cursor = ftsAttendee.search(query); EventBus.getDefault().post(new SearchedAttendeeListEvent(cursor)); } }); } public void displayAll() { AsyncExecutor.Builder builder = AsyncExecutor.builder(); AsyncExecutor executor = builder.build(); executor.execute(new AsyncExecutor.RunnableEx() { @Override public void run() throws Exception { Cursor cursor = ftsAttendee.queryForAll(); EventBus.getDefault().post(new SearchedAttendeeListEvent(cursor)); } }); } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { super.onCreateOptionsMenu(menu, inflater); // Inflate the menu; this adds items to the action bar if it is present. getActivity().getMenuInflater().inflate(R.menu.attendee, menu); MenuItem menuItem = menu.findItem(R.id.action_search); SearchView searchView = (SearchView) MenuItemCompat.getActionView(menuItem); searchView .setQueryHint(Html.fromHtml("<font color = #808080>Find by name, address, company, etc..</font>")); int searchPlateId = searchView.getContext().getResources().getIdentifier("android:id/search_plate", null, null); View searchPlate = searchView.findViewById(searchPlateId); if (searchPlate != null) { searchPlate.setBackgroundColor(Color.DKGRAY); int searchTextId = searchPlate.getContext().getResources().getIdentifier("android:id/search_src_text", null, null); TextView searchText = (TextView) searchPlate.findViewById(searchTextId); if (searchText != null) { searchText.setTextColor(Color.DKGRAY); searchText.setHintTextColor(Color.DKGRAY); } } MenuItemCompat.setOnActionExpandListener(menuItem, new MenuItemCompat.OnActionExpandListener() { @Override public boolean onMenuItemActionExpand(MenuItem item) { return true; } @Override public boolean onMenuItemActionCollapse(MenuItem item) { return true; } }); searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() { @Override public boolean onQueryTextSubmit(String s) { search(s); lastQuery = s; return false; } @Override public boolean onQueryTextChange(String s) { if (!Util.isNullOrEmpty(s)) { search(s); lastQuery = s; } return false; } }); } public void onEventMainThread(SearchedAttendeeListEvent event) { attendeeAdapter.changeCursor(event.attendees); attendeeAdapter.notifyDataSetChanged(); } protected void initAnimation() { attendeeAdapter = new AttendeeCursorAdapter(getActivity(), null, SimpleCursorAdapter.NO_SELECTION); animationAdapter = new AlphaInAnimationAdapter(attendeeAdapter); animationAdapter.setAbsListView(lvwAttendee); lvwAttendee.setAdapter(animationAdapter); } protected void initSwipeLayout() { swipeLayout.setOnRefreshListener(this); swipeLayout.setColorSchemeResources(R.color.yellow, R.color.orange, R.color.purple, R.color.blue); swipeLayout.setRefreshing(true); } public ArrayList<Integer> getIds() { ArrayList<Integer> ids = new ArrayList<Integer>(); Cursor c = attendeeAdapter.getCursor(); if (Optional.fromNullable(c).isPresent()) { Integer ID_INDEX = c.getColumnIndex(FTSAttendee.COL_ID); for (int i = 0; i < c.getCount(); i++) { c.moveToPosition(i); Integer id = Integer.valueOf(c.getString(ID_INDEX)); ids.add(id); } } return ids; } public void setAttendeeList(List<Attendee> attendeeList) { if (attendeeList != null) { displayAll(); } if (lvwAttendee.getFooterViewsCount() == 0) lvwAttendee.addFooterView(buildFooterView(getLayoutInflater(getArguments()))); swipeLayout.setRefreshing(false); } public void onEventMainThread(FetchedAttendeeListEvent event) { setAttendeeList(event.attendees); } @Override public void onDestroy() { super.onDestroy(); eventBus.unregister(this); } @Override public void onAttach(Activity activity) { super.onAttach(activity); ((MainActivity) activity).onSectionAttached( getArguments().getInt(BaseDevConActivity.PlaceholderFragment.ARG_SECTION_NUMBER)); } protected View buildFooterView(LayoutInflater inflater) { return inflater.inflate(R.layout.footer_standard, null); } @Override public void onRefresh() { attendeeService.populateFromAPI(); } }