Android DownloadManager get filename

Question

In my app you can download some files. I used the Android DownloadManager class for downloading. After the download is completed, it should show me a message th

Answer 1

I think you want to put something like this inside your if block. Replace YOUR_DM with your DownloadManager instance.

Bundle extras = intent.getExtras();
DownloadManager.Query q = new DownloadManager.Query();
q.setFilterById(extras.getLong(DownloadManager.EXTRA_DOWNLOAD_ID));
Cursor c = YOUR_DM.query(q);

if (c.moveToFirst()) {
    int status = c.getInt(c.getColumnIndex(DownloadManager.COLUMN_STATUS));
    if (status == DownloadManager.STATUS_SUCCESSFUL) {
        // process download
        title = c.getString(c.getColumnIndex(DownloadManager.COLUMN_TITLE));
        // get other required data by changing the constant passed to getColumnIndex
    }
}

Answer 2

There's a simpler way to retrieve the downloaded file URI, and that is with getUriForDownloadedFile:

download_receiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        Bundle b = intent.getExtras();
        DownloadManager dm = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
        long file_id = b.getLong(DownloadManager.EXTRA_DOWNLOAD_ID);
        Uri uri = dm.getUriForDownloadedFile(downloaded_file_id);

    }
}

I found this method here in a full description of how to use a BroadcastReceiver for handling DOWNLOAD_COMPLETE events.

Answer 3

I think what you are looking for is the DownloadManager.COLUMN_TITLE

Here is a link to the Android Documents: http://developer.android.com/reference/android/app/DownloadManager.html#COLUMN_TITLE

And here is a tutorial that will explain more than just getting the title. It is for downloading an image from a URL and then displaying it in an application. Mighty useful I think, overall speaking.

http://wptrafficanalyzer.in/blog/downloading-an-image-from-an-http-url-using-downloadmanager-and-displaying-in-imageview-by-dynamically-registered-broadcastreceiver/

Answer 4

u try this code to get the file name

DownloadManager.COLUMN_LOCAL_FILENAME

i am not sure about it

Answer 5

Ian Shannon was totally right with his answer, but I sugest some improvement:

• Remember to close that Cursor after using it, avoiding "Cursor Leaking". This Cursor consumes a lot of resources and must be released as soon as possible.

• If you put some title for the download, such as:

  DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url));
  request.setTitle("Some title");
  

  The value given by the DownloadManager.COLUMN_TITLE will be "Some title" instead of the file name. So I would recommend this instead:

  String filePath = c.getString(c.getColumnIndex(DownloadManager.COLUMN_LOCAL_FILENAME));
  title = filePath.substring( filePath.lastIndexOf('/')+1, filePath.length() );
  

  The COLUMN_LOCAL_FILENAME returns the entire path (/storage/sdcard0/Android/data/.../filename.ext), but with this code, we will only get the file name.

Final code:

Bundle extras = intent.getExtras();
DownloadManager.Query q = new DownloadManager.Query();
q.setFilterById(extras.getLong(DownloadManager.EXTRA_DOWNLOAD_ID));
Cursor c = YOUR_DM.query(q);

if (c.moveToFirst()) {
    int status = c.getInt(c.getColumnIndex(DownloadManager.COLUMN_STATUS));
    if (status == DownloadManager.STATUS_SUCCESSFUL) {
        String filePath = c.getString(c.getColumnIndex(DownloadManager.COLUMN_LOCAL_FILENAME));
        filename = filePath.substring( filePath.lastIndexOf('/')+1, filePath.length() );
    }
}
c.close();

Edit: Replace YOUR_DM with your DownloadManager instance.