Java tutorial
/* * Copyright (C) 2016 Hendrik Borghorst & Frederik Luetkes * * This program 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 * (at your option) any later version. * * This program 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 this program. If not, see <http://www.gnu.org/licenses/>. * */ package org.gateshipone.odyssey.fragments; import android.content.Context; import android.os.Bundle; import android.os.RemoteException; import android.support.v4.content.Loader; import android.support.v4.widget.SwipeRefreshLayout; import android.view.ContextMenu; import android.view.LayoutInflater; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.ListView; import org.gateshipone.odyssey.R; import org.gateshipone.odyssey.adapter.TracksAdapter; import org.gateshipone.odyssey.listener.OnArtistSelectedListener; import org.gateshipone.odyssey.loaders.TrackLoader; import org.gateshipone.odyssey.models.TrackModel; import org.gateshipone.odyssey.utils.MusicLibraryHelper; import org.gateshipone.odyssey.utils.ThemeUtils; import java.util.List; public class AllTracksFragment extends OdysseyFragment<TrackModel> implements AdapterView.OnItemClickListener { /** * Listener to open an artist */ private OnArtistSelectedListener mArtistSelectedCallback; /** * Called to create instantiate the UI of the fragment. */ @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // Inflate the layout for this fragment View rootView = inflater.inflate(R.layout.list_refresh, container, false); // get listview ListView rootList = (ListView) rootView.findViewById(R.id.list_refresh_listview); // get swipe layout mSwipeRefreshLayout = (SwipeRefreshLayout) rootView.findViewById(R.id.refresh_layout); // set swipe colors mSwipeRefreshLayout.setColorSchemeColors(ThemeUtils.getThemeColor(getContext(), R.attr.colorAccent), ThemeUtils.getThemeColor(getContext(), R.attr.colorPrimary)); // set swipe refresh listener mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() { @Override public void onRefresh() { refreshContent(); } }); mAdapter = new TracksAdapter(getActivity()); rootList.setAdapter(mAdapter); rootList.setOnItemClickListener(this); registerForContextMenu(rootList); return rootView; } /** * Called when the fragment is first attached to its context. */ @Override public void onAttach(Context context) { super.onAttach(context); // This makes sure that the container activity has implemented // the callback interface. If not, it throws an exception try { mArtistSelectedCallback = (OnArtistSelectedListener) context; } catch (ClassCastException e) { throw new ClassCastException(context.toString() + " must implement OnArtistSelectedListener"); } } /** * This method creates a new loader for this fragment. * * @param id The id of the loader * @param bundle Optional arguments * @return Return a new Loader instance that is ready to start loading. */ @Override public Loader<List<TrackModel>> onCreateLoader(int id, Bundle bundle) { return new TrackLoader(getActivity()); } /** * Called when the loader finished loading its data. * * @param loader The used loader itself * @param data Data of the loader */ @Override public void onLoadFinished(Loader<List<TrackModel>> loader, List<TrackModel> data) { super.onLoadFinished(loader, data); } /** * Play the clicked track. */ @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { playTrack(position); } /** * Create the context menu. */ @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) { super.onCreateContextMenu(menu, v, menuInfo); MenuInflater inflater = getActivity().getMenuInflater(); inflater.inflate(R.menu.context_menu_all_tracks_fragment, menu); } /** * Hook called when an menu item in the context menu is selected. * * @param item The menu item that was selected. * @return True if the hook was consumed here. */ @Override public boolean onContextItemSelected(MenuItem item) { AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo(); if (info == null) { return super.onContextItemSelected(item); } switch (item.getItemId()) { case R.id.fragment_all_tracks_action_enqueue: enqueueTrack(info.position, false); return true; case R.id.fragment_all_tracks_action_enqueueasnext: enqueueTrack(info.position, true); return true; case R.id.fragment_all_tracks_action_play: playTrack(info.position); return true; case R.id.fragment_all_tracks_showartist: showArtist(info.position); return true; default: return super.onContextItemSelected(item); } } /** * Callback to open a view for the artist of the selected track. * * @param position the position of the selected track in the adapter */ private void showArtist(int position) { // identify current artist TrackModel clickedTrack = (TrackModel) mAdapter.getItem(position); String artistTitle = clickedTrack.getTrackArtistName(); long artistID = MusicLibraryHelper.getArtistIDFromName(artistTitle, getActivity()); // Send the event to the host activity mArtistSelectedCallback.onArtistSelected(artistTitle, artistID); } /** * Call the PBS to play the selected track. * A previous playlist will be cleared. * * @param position the position of the selected track in the adapter */ private void playTrack(int position) { // clear playlist and play current track try { mServiceConnection.getPBS().clearPlaylist(); enqueueTrack(position, false); mServiceConnection.getPBS().jumpTo(0); } catch (RemoteException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } /** * Call the PBS to enqueue the selected track. * * @param position the position of the selected track in the adapter * @param asNext flag if the track should be enqueued as next */ private void enqueueTrack(int position, boolean asNext) { TrackModel track = (TrackModel) mAdapter.getItem(position); try { mServiceConnection.getPBS().enqueueTrack(track, asNext); } catch (RemoteException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }