android.app.DownloadManager#ACTION_VIEW_DOWNLOADS源码实例Demo

@Override
public void onReceive(Context context, Intent intent) {
    String action = intent.getAction();

    if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(action)) {
        if (mDownloadManager != null) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
                Uri downloadedUri = mDownloadManager.getUriForDownloadedFile(mLastDownloadId);
                String mimeType = mDownloadManager.getMimeTypeForDownloadedFile(mLastDownloadId);

                new NotifyDownloadedTask().execute(downloadedUri.toString(), mimeType);
            }
        }
    } else if (DownloadManager.ACTION_NOTIFICATION_CLICKED.equals(action)) {
        Intent notiIntent = new Intent(DownloadManager.ACTION_VIEW_DOWNLOADS);
        notiIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(notiIntent);
    }
}
 

@Override
public void onReceive(Context context, Intent intent) {
    if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(intent.getAction())) {
        long downloadApkId = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1);
        long localDownloadId = UpdaterUtils.getLocalDownloadId(context);
        if (downloadApkId == localDownloadId) {
            Logger.get().d("download complete. downloadId is " + downloadApkId);
            installApk(context, downloadApkId);
        }
    } else if (DownloadManager.ACTION_NOTIFICATION_CLICKED.equals(intent.getAction())) {
        //处理 如果还未完成下载，用户点击Notification
        Intent viewDownloadIntent = new Intent(DownloadManager.ACTION_VIEW_DOWNLOADS);
        viewDownloadIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(viewDownloadIntent);
    }
}
 

/**
 * Open the Activity which shows a list of all downloads.
 * @param context Application context
 */
protected static void openDownloadsPage(Context context) {
    Intent pageView = new Intent(DownloadManager.ACTION_VIEW_DOWNLOADS);
    pageView.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    try {
        context.startActivity(pageView);
    } catch (ActivityNotFoundException e) {
        Log.e(TAG, "Cannot find Downloads app", e);
    }
}
 

/**
 * Open the download manager app. If no app is found that can handle
 * this intent, a a system chooser is shown.
 *
 * @param context
 */
public static void openDownloadManager(Context context) {
	Intent downloadManagerIntent = new Intent(DownloadManager.ACTION_VIEW_DOWNLOADS);
	downloadManagerIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

	try {
		context.startActivity(downloadManagerIntent);
	} catch (ActivityNotFoundException e) {
		context.startActivity(Intent.createChooser(downloadManagerIntent, context.getString(R.string.action_open)));
	}
}
 

/**
 * Open the Activity which shows a list of all downloads.
 * @param context Application context
 */
protected static void openDownloadsPage(Context context) {
    if (DownloadUtils.showDownloadManager(null, null)) return;

    // Open the Android Download Manager.
    Intent pageView = new Intent(DownloadManager.ACTION_VIEW_DOWNLOADS);
    pageView.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    try {
        context.startActivity(pageView);
    } catch (ActivityNotFoundException e) {
        Log.e(TAG, "Cannot find Downloads app", e);
    }
}
 

/**
 * Open the Activity which shows a list of all downloads.
 * @param context Application context
 */
public static void openDownloadsPage(Context context) {
    if (DownloadUtils.showDownloadManager(null, null)) return;

    // Open the Android Download Manager.
    Intent pageView = new Intent(DownloadManager.ACTION_VIEW_DOWNLOADS);
    pageView.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    try {
        context.startActivity(pageView);
    } catch (ActivityNotFoundException e) {
        Log.e(TAG, "Cannot find Downloads app", e);
    }
}
 

@TargetApi(VERSION_CODES.O)
private static void copyToDownload(
    Context context, Uri sourceUri, String fileName, File destination) {
  try {
    if (AndroidVersionUtils.isApiLevelAtLeastOreo()) {
      Files.copy(
          context.getContentResolver().openInputStream(sourceUri),
          destination.toPath(),
          StandardCopyOption.REPLACE_EXISTING);
    } else {
      UpdateExperimentFragment.copyUriToFile(context, sourceUri, destination);
      // Inform DownloadManager of completed download so the file shows in Downloads app
      DownloadManager downloadManager =
          (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
      downloadManager.addCompletedDownload(
          destination.getName(),
          destination.getName(),
          true,
          getMimeTypeFromFileName(fileName),
          destination.getAbsolutePath(),
          destination.length(),
          false);
    }
    Intent intent = new Intent(DownloadManager.ACTION_VIEW_DOWNLOADS);
    PendingIntent pendingIntent =
        PendingIntent.getActivity(context, 1, intent, PendingIntent.FLAG_ONE_SHOT);
    ((NotificationManager)
            context.getApplicationContext().getSystemService(Context.NOTIFICATION_SERVICE))
        .notify(
            NotificationIds.SAVED_TO_DEVICE,
            new NotificationCompat.Builder(
                    context.getApplicationContext(), NotificationChannels.SAVE_TO_DEVICE_CHANNEL)
                .setContentTitle(fileName)
                .setContentText(context.getString(R.string.saved_to_device_text))
                .setSubText(context.getString(R.string.save_to_device_channel_description))
                .setSmallIcon(R.drawable.ic_notification_24dp)
                .setContentIntent(pendingIntent)
                .setAutoCancel(true)
                .build());
  } catch (IOException ioe) {
    AppSingleton.getInstance(context)
        .onNextActivity()
        .subscribe(
            activity -> {
              AccessibilityUtils.makeSnackbar(
                      activity.findViewById(android.R.id.content),
                      context.getResources().getString(R.string.saved_to_device_error),
                      Snackbar.LENGTH_SHORT)
                  .show();
            });
    ioe.printStackTrace();
    if (destination.exists()) {
      destination.delete();
    }
  } finally {
    AppSingleton.getInstance(context).setExportServiceBusy(false);
  }
}