Java tutorial
/***************************************************************************** * DirectoryViewFragment.java ***************************************************************************** * Copyright 2012 VLC authors and VideoLAN * Copyright 2012 Edward Wang * * 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 2 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/ package org.videolan.vlc2.gui; import java.io.IOException; import java.util.List; import org.videolan.libvlc.LibVLC; import org.videolan.vlc2.R; import org.videolan.vlc2.audio.AudioServiceController; import org.videolan.vlc2.gui.video.VideoPlayerActivity; import org.videolan.vlc2.interfaces.IRefreshable; import org.videolan.vlc2.interfaces.ISortable; import org.videolan.vlc2.util.Util; import org.videolan.vlc2.util.VLCRunnable; import android.app.AlertDialog; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.support.v4.app.ListFragment; import android.support.v7.app.ActionBarActivity; import android.view.ContextMenu; import android.view.ContextMenu.ContextMenuInfo; 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.AdapterView.AdapterContextMenuInfo; import android.widget.AdapterView.OnItemLongClickListener; import android.widget.ListView; public class DirectoryViewFragment extends ListFragment implements IRefreshable, ISortable { public final static String TAG = "VLC/DirectoryViewFragment"; private DirectoryAdapter mDirectoryAdapter; /* All subclasses of Fragment must include a public empty constructor. */ public DirectoryViewFragment() { } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mDirectoryAdapter = new DirectoryAdapter(getActivity()); } @Override public void onStart() { super.onStart(); IntentFilter filter = new IntentFilter(); filter.addAction(Intent.ACTION_MEDIA_MOUNTED); filter.addAction(Intent.ACTION_MEDIA_UNMOUNTED); filter.addAction(Intent.ACTION_MEDIA_REMOVED); filter.addAction(Intent.ACTION_MEDIA_EJECT); filter.addDataScheme("file"); getActivity().registerReceiver(messageReceiver, filter); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { ((ActionBarActivity) getActivity()).getSupportActionBar().setTitle(R.string.directories); View v = inflater.inflate(R.layout.directory_view, container, false); setListAdapter(mDirectoryAdapter); final ListView listView = (ListView) v.findViewById(android.R.id.list); listView.setOnItemLongClickListener(new OnItemLongClickListener() { @Override public boolean onItemLongClick(AdapterView<?> adapterView, View v, int position, long id) { if (mDirectoryAdapter.isChildFile(position)) { return false; } else { return true; /* Terminate the automatic context menu */ } } }); registerForContextMenu(listView); return v; } @Override public void onStop() { super.onStop(); getActivity().unregisterReceiver(messageReceiver); } @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { int position = ((AdapterContextMenuInfo) menuInfo).position; if (mDirectoryAdapter.isChildFile(position)) { MenuInflater menuInflater = getActivity().getMenuInflater(); menuInflater.inflate(R.menu.directory_view, menu); } } @Override public boolean onContextItemSelected(MenuItem item) { if (!getUserVisibleHint()) return super.onContextItemSelected(item); AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo(); if (info == null) // info can be null return super.onContextItemSelected(item); int id = item.getItemId(); String mediaLocation = mDirectoryAdapter.getMediaLocation(info.position); if (mediaLocation == null) return super.onContextItemSelected(item); if (id == R.id.directory_view_play) { openMediaFile(info.position); return true; } else if (id == R.id.directory_view_append) { AudioServiceController.getInstance().append(mediaLocation); return true; } else if (id == R.id.directory_view_delete) { AlertDialog alertDialog = CommonDialogs.deleteMedia(getActivity(), mediaLocation, new VLCRunnable() { @Override public void run(Object o) { refresh(); } }); alertDialog.show(); return true; } else if (id == R.id.directory_view_play_audio) { AudioServiceController.getInstance().load(mediaLocation, true); return true; } else if (id == R.id.directory_view_play_video) { VideoPlayerActivity.start(getActivity(), mediaLocation); return true; } return super.onContextItemSelected(item); } @Override public void onListItemClick(ListView l, View v, int p, long id) { int success = mDirectoryAdapter.browse(p); if (success < 0) /* Clicked on a media file */ openMediaFile(p); else setSelection(success); } public boolean isRootDirectory() { return mDirectoryAdapter.isRoot(); } public void showParentDirectory() { int success = mDirectoryAdapter.browse(".."); if (success >= 0) setSelection(success); }; private void openMediaFile(int p) { AudioServiceController audioController = AudioServiceController.getInstance(); String mediaFile = mDirectoryAdapter.getMediaLocation(p); try { if (LibVLC.getExistingInstance() == null || !LibVLC.getExistingInstance().hasVideoTrack(mediaFile)) { List<String> mediaLocations = mDirectoryAdapter.getAllMediaLocations(); audioController.load(mediaLocations, mediaLocations.indexOf(mediaFile)); } else { VideoPlayerActivity.start(getActivity(), mediaFile); } } catch (IOException e) { /* disk error maybe? */ } } @Override public void sortBy(int sortby) { // TODO Util.toaster(getActivity(), R.string.notavailable); } @Override public void refresh() { if (mDirectoryAdapter != null) mDirectoryAdapter.refresh(); } private final BroadcastReceiver messageReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if (action.equalsIgnoreCase(Intent.ACTION_MEDIA_MOUNTED) || action.equalsIgnoreCase(Intent.ACTION_MEDIA_UNMOUNTED) || action.equalsIgnoreCase(Intent.ACTION_MEDIA_REMOVED) || action.equalsIgnoreCase(Intent.ACTION_MEDIA_EJECT)) { refresh(); } } }; }