Question

******现在已经完成了代码，但取消后通知显示再次运行！

我正在使用DownloadManager通过url下载文件，它工作正常。代码创建管理器：

String[] url = {urlsProz,urlsMb};
DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url[i]));
downloadFile=url[i];
request.setDescription("Some description");
request.setTitle("Some titles");
// in order for this if to run, you must use the android 3.2 to compile your app
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
  request.allowScanningByMediaScanner();
  request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE);
}
String s= Environment.DIRECTORY_DOWNLOADS;
Log.i("*** testDownloadManager***",s+"/"+url[i]);
request.setDestinationInExternalPublicDir(s, "name-of-the-file"+(++j)+".ext");

// get download service and enqueue file
manager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
//Download progress will be showing in the notification bar
downloadId=manager.enqueue(request);
Log.i("*** testDownloadManager***","downloadId:"+downloadId);

按下取消按钮后的代码：

if (manager != null) {
    //remove() method will return the number of downloads removed
    //Any downloaded files (complete or partial) will be deleted
    int i = manager.remove(downloadId);
    Log.i(TAG, downloadId + "," + i + " cancelled");
    NotificationManager notifManager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE);
    //notifManager.cancelAll(); //doesn'nt work
    manager = null;
}

管理员已取消，但即使在应用程序之后通知显示仍在运行。有任何想法取消此通知吗？

关心Wicki

Answer 1

cancelAll（）方法仅取消应用程序创建的通知。

我认为您使用DownloadManager：

// start download
Request request = new Request(Uri.parse(urltoDownload));
request.setNotificationVisibility(Request.VISIBILITY_VISIBLE);
request.setTitle("my title");
long enqueue = downloadManager.enqueue(request);

所以它创建了通知的DownloadManager应用程序（服务），它只有DownloadManager应用程序可以取消它。您无法取消其他应用通知，但这是不可能的。

Answer 2

DownloadManager dm = (DownloadManager) c
            .getSystemService(Context.DOWNLOAD_SERVICE);
    DownloadManager.Request dlrequest = new DownloadManager.Request(
            Uri.parse(url));
    dlrequest
            .setAllowedNetworkTypes(
                    DownloadManager.Request.NETWORK_WIFI
                            | DownloadManager.Request.NETWORK_MOBILE)
            .setTitle("Downloading")
            .setDescription("Downloading in Progress..")
            .setDestinationInExternalPublicDir("folder_name", name + ".jpg")
            **.setNotificationVisibility(visibility)**
            .allowScanningByMediaScanner();

    dm.enqueue(dlrequest);

.setNotificationVisibility（visibility） - ＆gt;设置可见性为true或false。并完成了......！

DownloadManager，永无止境的通知

2 个答案: