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DownloadTracker shouldn't depend on DefaultDownloadIndex

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- It can work with any DownloadIndex
- Also simplify things to not require that it's registered
  as a DownloadManager listener by someone else

PiperOrigin-RevId: 243697352
This commit is contained in:
olly 2019-04-15 23:09:15 +01:00 committed by AquilesCanta
parent 9c759a867b
commit 77b78b96df
2 changed files with 27 additions and 30 deletions
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3
demos/main/src/main/java/com/google/android/exoplayer2/demo/DemoApplication.java
View File

@ -129,8 +129,7 @@ public class DemoApplication extends Application {
DownloadManager.DEFAULT_MIN_RETRY_COUNT,
DownloadManager.DEFAULT_REQUIREMENTS);
downloadTracker =
new DownloadTracker(/* context= */ this, buildDataSourceFactory(), downloadIndex);
downloadManager.addListener(downloadTracker);
new DownloadTracker(/* context= */ this, buildDataSourceFactory(), downloadManager);
}
}

54
demos/main/src/main/java/com/google/android/exoplayer2/demo/DownloadTracker.java
View File

@ -23,11 +23,11 @@ import androidx.fragment.app.FragmentManager;
import android.widget.Toast;
import com.google.android.exoplayer2.C;
import com.google.android.exoplayer2.RenderersFactory;
import com.google.android.exoplayer2.offline.DefaultDownloadIndex;
import com.google.android.exoplayer2.offline.Download;
import com.google.android.exoplayer2.offline.DownloadAction;
import com.google.android.exoplayer2.offline.DownloadCursor;
import com.google.android.exoplayer2.offline.DownloadHelper;
import com.google.android.exoplayer2.offline.DownloadIndex;
import com.google.android.exoplayer2.offline.DownloadManager;
import com.google.android.exoplayer2.offline.DownloadService;
import com.google.android.exoplayer2.offline.StreamKey;
@ -41,10 +41,8 @@ import java.util.HashMap;
import java.util.List;
import java.util.concurrent.CopyOnWriteArraySet;
/**
* Tracks media that has been downloaded.
*/
public class DownloadTracker implements DownloadManager.Listener {
/** Tracks media that has been downloaded. */
public class DownloadTracker {
/** Listens for changes in the tracked downloads. */
public interface Listener {
@ -59,17 +57,18 @@ public class DownloadTracker implements DownloadManager.Listener {
private final DataSource.Factory dataSourceFactory;
private final CopyOnWriteArraySet<Listener> listeners;
private final HashMap<Uri, Download> downloads;
private final DefaultDownloadIndex downloadIndex;
private final DownloadIndex downloadIndex;
@Nullable private StartDownloadDialogHelper startDownloadDialogHelper;
public DownloadTracker(
Context context, DataSource.Factory dataSourceFactory, DefaultDownloadIndex downloadIndex) {
Context context, DataSource.Factory dataSourceFactory, DownloadManager downloadManager) {
this.context = context.getApplicationContext();
this.dataSourceFactory = dataSourceFactory;
this.downloadIndex = downloadIndex;
listeners = new CopyOnWriteArraySet<>();
downloads = new HashMap<>();
downloadIndex = downloadManager.getDownloadIndex();
downloadManager.addListener(new DownloadManagerListener());
loadDownloads();
}
@ -114,26 +113,6 @@ public class DownloadTracker implements DownloadManager.Listener {
}
}
// DownloadManager.Listener
@Override
public void onDownloadChanged(DownloadManager downloadManager, Download download) {
downloads.put(download.action.uri, download);
for (Listener listener : listeners) {
listener.onDownloadsChanged();
}
}
@Override
public void onDownloadRemoved(DownloadManager downloadManager, Download download) {
downloads.remove(download.action.uri);
for (Listener listener : listeners) {
listener.onDownloadsChanged();
}
}
// Internal methods
private void loadDownloads() {
try (DownloadCursor loadedDownloads = downloadIndex.getDownloads()) {
while (loadedDownloads.moveToNext()) {
@ -167,6 +146,25 @@ public class DownloadTracker implements DownloadManager.Listener {
}
}
private class DownloadManagerListener implements DownloadManager.Listener {
@Override
public void onDownloadChanged(DownloadManager downloadManager, Download download) {
downloads.put(download.action.uri, download);
for (Listener listener : listeners) {
listener.onDownloadsChanged();
}
}
@Override
public void onDownloadRemoved(DownloadManager downloadManager, Download download) {
downloads.remove(download.action.uri);
for (Listener listener : listeners) {
listener.onDownloadsChanged();
}
}
}
private final class StartDownloadDialogHelper
implements DownloadHelper.Callback,
DialogInterface.OnClickListener,