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Code Issues Projects Releases Packages Wiki Activity Actions

Implemented offline mode functionality

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CappielloAntonio 2021-04-26 19:17:42 +02:00
parent 658e69dcb9
commit e0569c3901
21 changed files with 635 additions and 23 deletions
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app/src/main/java/com/cappielloantonio/play/service/DownloadTracker.java Normal file
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/*
* Copyright (C) 2017 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.cappielloantonio.play.service;
import android.content.Context;
import android.content.DialogInterface;
import android.net.Uri;
import android.os.AsyncTask;
import android.provider.MediaStore;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;
import androidx.fragment.app.FragmentManager;
import com.cappielloantonio.play.App;
import com.cappielloantonio.play.model.Song;
import com.cappielloantonio.play.repository.SongRepository;
import com.cappielloantonio.play.util.MusicUtil;
import com.google.android.exoplayer2.Format;
import com.google.android.exoplayer2.MediaItem;
import com.google.android.exoplayer2.RenderersFactory;
import com.google.android.exoplayer2.drm.DrmInitData;
import com.google.android.exoplayer2.drm.DrmSession;
import com.google.android.exoplayer2.drm.DrmSessionEventListener;
import com.google.android.exoplayer2.drm.OfflineLicenseHelper;
import com.google.android.exoplayer2.offline.Download;
import com.google.android.exoplayer2.offline.DownloadCursor;
import com.google.android.exoplayer2.offline.DownloadHelper;
import com.google.android.exoplayer2.offline.DownloadHelper.LiveContentUnsupportedException;
import com.google.android.exoplayer2.offline.DownloadIndex;
import com.google.android.exoplayer2.offline.DownloadManager;
import com.google.android.exoplayer2.offline.DownloadRequest;
import com.google.android.exoplayer2.offline.DownloadService;
import com.google.android.exoplayer2.source.TrackGroup;
import com.google.android.exoplayer2.source.TrackGroupArray;
import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
import com.google.android.exoplayer2.trackselection.MappingTrackSelector.MappedTrackInfo;
import com.google.android.exoplayer2.upstream.HttpDataSource;
import com.google.android.exoplayer2.util.Log;
import com.google.android.exoplayer2.util.Util;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.concurrent.CopyOnWriteArraySet;
import static com.google.android.exoplayer2.util.Assertions.checkNotNull;
import static com.google.android.exoplayer2.util.Assertions.checkStateNotNull;
/**
* Tracks media that has been downloaded.
*/
public class DownloadTracker {
private static final String TAG = "DownloadTracker";
private final Context context;
private final HttpDataSource.Factory httpDataSourceFactory;
private final CopyOnWriteArraySet<Listener> listeners;
private final HashMap<Uri, Download> downloads;
private final DownloadIndex downloadIndex;
private final DefaultTrackSelector.Parameters trackSelectorParameters;
public DownloadTracker(Context context,HttpDataSource.Factory httpDataSourceFactory,DownloadManager downloadManager) {
this.context = context.getApplicationContext();
this.httpDataSourceFactory = httpDataSourceFactory;
listeners = new CopyOnWriteArraySet<>();
downloads = new HashMap<>();
downloadIndex = downloadManager.getDownloadIndex();
trackSelectorParameters = DownloadHelper.getDefaultTrackSelectorParameters(context);
downloadManager.addListener(new DownloadManagerListener());
loadDownloads();
}
public void addListener(Listener listener) {
checkNotNull(listener);
listeners.add(listener);
}
public void removeListener(Listener listener) {
listeners.remove(listener);
}
public boolean isDownloaded(Song song) {
MediaItem mediaItem = MusicUtil.getMediaItemFromSong(song);
@Nullable Download download = downloads.get(checkNotNull(mediaItem.playbackProperties).uri);
return download != null && download.state != Download.STATE_FAILED;
}
@Nullable
public DownloadRequest getDownloadRequest(Uri uri) {
return new DownloadRequest.Builder(uri.toString(), uri).build();
}
public void toggleDownload(List<Song> songs) {
SongRepository songRepository = new SongRepository(App.getInstance());
for(Song song: songs) {
MediaItem mediaItem = MusicUtil.getMediaItemFromSong(song);
@Nullable Download download = downloads.get(checkNotNull(mediaItem.playbackProperties).uri);
if (download != null && download.state != Download.STATE_FAILED) {
song.setOffline(false);
DownloadService.sendRemoveDownload(context, PlayDownloadService.class, download.request.id, false);
} else {
song.setOffline(true);
DownloadService.sendAddDownload(context, PlayDownloadService.class, getDownloadRequest(mediaItem.playbackProperties.uri),false);
}
songRepository.setOfflineStatus(song);
}
}
public void removeAllDownloads() {
SongRepository songRepository = new SongRepository(App.getInstance());
songRepository.setAllOffline();
DownloadService.sendRemoveAllDownloads(context, PlayDownloadService.class, false);
}
private void loadDownloads() {
try (DownloadCursor loadedDownloads = downloadIndex.getDownloads()) {
while (loadedDownloads.moveToNext()) {
Download download = loadedDownloads.getDownload();
downloads.put(download.request.uri, download);
}
} catch (IOException e) {
Log.w(TAG, "Failed to query downloads", e);
}
}
public interface Listener {
void onDownloadsChanged();
}
private class DownloadManagerListener implements DownloadManager.Listener {
@Override
public void onDownloadChanged(
@NonNull DownloadManager downloadManager,
@NonNull Download download,
@Nullable Exception finalException) {
downloads.put(download.request.uri, download);
for (Listener listener : listeners) {
listener.onDownloadsChanged();
}
}
@Override
public void onDownloadRemoved(
@NonNull DownloadManager downloadManager, @NonNull Download download) {
downloads.remove(download.request.uri);
for (Listener listener : listeners) {
listener.onDownloadsChanged();
}
}
}
}