Java tutorial
/* * Copyright (C) 2013 Simon Vig Therkildsen * * 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 net.simonvt.cathode.ui.fragment; import android.app.Activity; import android.content.SharedPreferences; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.preference.PreferenceManager; import android.support.v4.app.LoaderManager; import android.support.v4.content.Loader; import android.support.v4.view.MenuItemCompat; import android.support.v7.widget.Toolbar; import android.text.format.DateUtils; import android.view.MenuItem; import android.view.View; import java.util.ArrayList; import java.util.HashMap; import java.util.Map; import javax.inject.Inject; import net.simonvt.cathode.CathodeApp; import net.simonvt.cathode.R; import net.simonvt.cathode.database.SimpleCursor; import net.simonvt.cathode.database.SimpleCursorLoader; import net.simonvt.cathode.jobqueue.JobManager; import net.simonvt.cathode.provider.DatabaseContract.ShowColumns; import net.simonvt.cathode.provider.ProviderSchematic.Shows; import net.simonvt.cathode.remote.sync.SyncJob; import net.simonvt.cathode.settings.Settings; import net.simonvt.cathode.ui.LibraryType; import net.simonvt.cathode.ui.Loaders; import net.simonvt.cathode.ui.ShowsNavigationListener; import net.simonvt.cathode.ui.adapter.ShowClickListener; import net.simonvt.cathode.ui.adapter.ShowDescriptionAdapter; import net.simonvt.cathode.ui.adapter.ShowSuggestionAdapter; import net.simonvt.cathode.ui.adapter.SuggestionsAdapter; import net.simonvt.cathode.ui.dialog.ListDialog; import net.simonvt.cathode.widget.SearchView; public class TrendingShowsFragment extends ToolbarGridFragment<ShowDescriptionAdapter.ViewHolder> implements LoaderManager.LoaderCallbacks<SimpleCursor>, ListDialog.Callback, ShowClickListener { private enum SortBy { VIEWERS("viewers", Shows.SORT_VIEWERS), RATING("rating", Shows.SORT_RATING); private String key; private String sortOrder; SortBy(String key, String sortOrder) { this.key = key; this.sortOrder = sortOrder; } public String getKey() { return key; } public String getSortOrder() { return sortOrder; } @Override public String toString() { return key; } private static final Map<String, SortBy> STRING_MAPPING = new HashMap<String, SortBy>(); static { for (SortBy via : SortBy.values()) { STRING_MAPPING.put(via.toString().toUpperCase(), via); } } public static SortBy fromValue(String value) { SortBy sortBy = STRING_MAPPING.get(value.toUpperCase()); if (sortBy == null) { sortBy = VIEWERS; } return sortBy; } } private static final String DIALOG_SORT = "net.simonvt.cathode.ui.fragment.TrendingShowsFragment.sortDialog"; private ShowDescriptionAdapter showsAdapter; private ShowsNavigationListener navigationListener; @Inject JobManager jobManager; private SharedPreferences settings; private SortBy sortBy; private Cursor cursor; private int columnCount; @Override public void onAttach(Activity activity) { super.onAttach(activity); try { navigationListener = (ShowsNavigationListener) activity; } catch (ClassCastException e) { throw new ClassCastException(activity.toString() + " must implement ShowsNavigationListener"); } } @Override public void onCreate(Bundle inState) { super.onCreate(inState); CathodeApp.inject(getActivity(), this); settings = PreferenceManager.getDefaultSharedPreferences(getActivity()); sortBy = SortBy.fromValue(settings.getString(Settings.SORT_SHOW_TRENDING, SortBy.VIEWERS.getKey())); getLoaderManager().initLoader(Loaders.LOADER_SHOWS_TRENDING, null, this); columnCount = getResources().getInteger(R.integer.showsColumns); setTitle(R.string.title_shows_trending); setEmptyText(R.string.shows_loading_trending); } @Override protected int getColumnCount() { return columnCount; } @Override public boolean displaysMenuIcon() { return true; } @Override public void createMenu(Toolbar toolbar) { super.createMenu(toolbar); toolbar.inflateMenu(R.menu.fragment_shows); toolbar.inflateMenu(R.menu.fragment_shows_trending); final MenuItem searchItem = toolbar.getMenu().findItem(R.id.menu_search); SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchItem); searchView.setAdapter(new ShowSuggestionAdapter(searchView.getContext())); searchView.setListener(new SearchView.SearchViewListener() { @Override public void onTextChanged(String newText) { } @Override public void onSubmit(String query) { navigationListener.searchShow(query); MenuItemCompat.collapseActionView(searchItem); } @Override public void onSuggestionSelected(Object suggestion) { SuggestionsAdapter.Suggestion item = (SuggestionsAdapter.Suggestion) suggestion; if (item.getId() != null) { navigationListener.onDisplayShow(item.getId(), item.getTitle(), LibraryType.WATCHED); } else { navigationListener.searchShow(item.getTitle()); } MenuItemCompat.collapseActionView(searchItem); } }); } @Override public boolean onMenuItemClick(MenuItem item) { switch (item.getItemId()) { case R.id.menu_refresh: jobManager.addJob(new SyncJob()); return true; case R.id.sort_by: ArrayList<ListDialog.Item> items = new ArrayList<ListDialog.Item>(); items.add(new ListDialog.Item(R.id.sort_viewers, R.string.sort_viewers)); items.add(new ListDialog.Item(R.id.sort_rating, R.string.sort_rating)); ListDialog.newInstance(R.string.action_sort_by, items, this).show(getFragmentManager(), DIALOG_SORT); return true; default: return super.onMenuItemClick(item); } } @Override public void onItemSelected(int id) { switch (id) { case R.id.sort_viewers: sortBy = SortBy.VIEWERS; settings.edit().putString(Settings.SORT_SHOW_TRENDING, SortBy.VIEWERS.getKey()).apply(); getLoaderManager().restartLoader(Loaders.LOADER_SHOWS_TRENDING, null, this); break; case R.id.sort_rating: sortBy = SortBy.RATING; settings.edit().putString(Settings.SORT_SHOW_TRENDING, SortBy.RATING.getKey()).apply(); getLoaderManager().restartLoader(Loaders.LOADER_SHOWS_TRENDING, null, this); break; } } @Override public void onShowClick(View view, int position, long id) { navigationListener.onDisplayShow(id, cursor.getString(cursor.getColumnIndex(ShowColumns.TITLE)), LibraryType.WATCHED); } private void setCursor(Cursor cursor) { this.cursor = cursor; if (showsAdapter == null) { showsAdapter = new ShowDescriptionAdapter(getActivity(), this, cursor); setAdapter(showsAdapter); return; } showsAdapter.changeCursor(cursor); } @Override public Loader<SimpleCursor> onCreateLoader(int i, Bundle bundle) { final Uri contentUri = Shows.SHOWS_TRENDING; SimpleCursorLoader cl = new SimpleCursorLoader(getActivity(), contentUri, ShowDescriptionAdapter.PROJECTION, ShowColumns.NEEDS_SYNC + "=0", null, sortBy.getSortOrder()); cl.setUpdateThrottle(2 * DateUtils.SECOND_IN_MILLIS); return cl; } @Override public void onLoadFinished(Loader<SimpleCursor> loader, SimpleCursor data) { setCursor(data); } @Override public void onLoaderReset(Loader<SimpleCursor> loader) { } }