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Add DownloadService.invalidateForegroundNotification

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ISSUE: #4563
PiperOrigin-RevId: 243616444
This commit is contained in:
eguven 2019-04-15 16:03:41 +01:00 committed by AquilesCanta
parent 18dd3fdb46
commit ba91501751
1 changed files with 32 additions and 17 deletions
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49
library/core/src/main/java/com/google/android/exoplayer2/offline/DownloadService.java
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@ -159,6 +159,7 @@ public abstract class DownloadService extends Service {
private int lastStartId; private int lastStartId;
private boolean startedInForeground; private boolean startedInForeground;
private boolean taskRemoved; private boolean taskRemoved;
private boolean isDestroyed;
/** /**
* Creates a DownloadService. * Creates a DownloadService.
@ -468,6 +469,7 @@ public abstract class DownloadService extends Service {
@Override @Override
public void onDestroy() { public void onDestroy() {
logd("onDestroy"); logd("onDestroy");
isDestroyed = true;
DownloadManagerHelper downloadManagerHelper = downloadManagerListeners.get(getClass()); DownloadManagerHelper downloadManagerHelper = downloadManagerListeners.get(getClass());
boolean unschedule = !downloadManager.isWaitingForRequirements(); boolean unschedule = !downloadManager.isWaitingForRequirements();
downloadManagerHelper.detachService(this, unschedule); downloadManagerHelper.detachService(this, unschedule);
@ -517,6 +519,16 @@ public abstract class DownloadService extends Service {
*/ */
protected abstract Notification getForegroundNotification(Download[] downloads); protected abstract Notification getForegroundNotification(Download[] downloads);
/**
* Invalidates the current foreground notification and causes {@link
* #getForegroundNotification(Download[])} to be invoked again if the service isn't stopped.
*/
protected final void invalidateForegroundNotification() {
if (foregroundNotificationUpdater != null && !isDestroyed) {
foregroundNotificationUpdater.invalidate();
}
}
/** /**
* Called when the state of a download changes. The default implementation is a no-op. * Called when the state of a download changes. The default implementation is a no-op.
* *
@ -543,7 +555,7 @@ public abstract class DownloadService extends Service {
|| download.state == Download.STATE_RESTARTING) { || download.state == Download.STATE_RESTARTING) {
foregroundNotificationUpdater.startPeriodicUpdates(); foregroundNotificationUpdater.startPeriodicUpdates();
} else { } else {
foregroundNotificationUpdater.update(); foregroundNotificationUpdater.invalidate();
} }
} }
} }
@ -551,7 +563,7 @@ public abstract class DownloadService extends Service {
private void notifyDownloadRemoved(Download download) { private void notifyDownloadRemoved(Download download) {
onDownloadRemoved(download); onDownloadRemoved(download);
if (foregroundNotificationUpdater != null) { if (foregroundNotificationUpdater != null) {
foregroundNotificationUpdater.update(); foregroundNotificationUpdater.invalidate();
} }
} }
@ -583,11 +595,12 @@ public abstract class DownloadService extends Service {
return new Intent(context, clazz).setAction(action); return new Intent(context, clazz).setAction(action);
} }
private final class ForegroundNotificationUpdater implements Runnable { private final class ForegroundNotificationUpdater {
private final int notificationId; private final int notificationId;
private final long updateInterval; private final long updateInterval;
private final Handler handler; private final Handler handler;
private final Runnable callback;
private boolean periodicUpdatesStarted; private boolean periodicUpdatesStarted;
private boolean notificationDisplayed; private boolean notificationDisplayed;
@ -596,6 +609,7 @@ public abstract class DownloadService extends Service {
this.notificationId = notificationId; this.notificationId = notificationId;
this.updateInterval = updateInterval; this.updateInterval = updateInterval;
this.handler = new Handler(Looper.getMainLooper()); this.handler = new Handler(Looper.getMainLooper());
this.callback = this::update;
} }
public void startPeriodicUpdates() { public void startPeriodicUpdates() {
@ -605,17 +619,7 @@ public abstract class DownloadService extends Service {
public void stopPeriodicUpdates() { public void stopPeriodicUpdates() {
periodicUpdatesStarted = false; periodicUpdatesStarted = false;
handler.removeCallbacks(this); handler.removeCallbacks(callback);
}
public void update() {
Download[] downloads = downloadManager.getCurrentDownloads();
startForeground(notificationId, getForegroundNotification(downloads));
notificationDisplayed = true;
if (periodicUpdatesStarted) {
handler.removeCallbacks(this);
handler.postDelayed(this, updateInterval);
}
} }
public void showNotificationIfNotAlready() { public void showNotificationIfNotAlready() {
@ -624,9 +628,20 @@ public abstract class DownloadService extends Service {
} }
} }
@Override public void invalidate() {
public void run() { if (notificationDisplayed) {
update(); update();
}
}
private void update() {
Download[] downloads = downloadManager.getCurrentDownloads();
startForeground(notificationId, getForegroundNotification(downloads));
notificationDisplayed = true;
if (periodicUpdatesStarted) {
handler.removeCallbacks(callback);
handler.postDelayed(callback, updateInterval);
}
} }
} }