How to check if file is in downloadmanager queue?

Question

The user has to download multiple files which will start on a button click. The code will check if a file already exists, if not then it adds it to the download queue. I am adding all the non-existent files to the download queue.

But if the user clicks on the button again immediately, the files get re-added to the download queue. So how to check if the file is added to the download manager queue? If it is added then, the file will not be re-added.

Answer 1

you should use DownloadManager.Query

Here is example you can refer Download manager example

sample code

DownloadManager.Query query = null;
Cursor c = null;
DownloadManager downloadManager = null;
downloadManager = (DownloadManager)getSystemService(Context.DOWNLOAD_SERVICE);
query = new DownloadManager.Query();
 if(query!=null) {
            query.setFilterByStatus(DownloadManager.STATUS_FAILED|DownloadManager.STATUS_PAUSED|DownloadManager.STATUS_SUCCESSFUL|
                    DownloadManager.STATUS_RUNNING|DownloadManager.STATUS_PENDING);
        } else {
            return;
        }
c = downloadManager.query(query);
if(c.moveToFirst()) { 
int status = c.getInt(c.getColumnIndex(DownloadManager.COLUMN_STATUS)); 
switch(status) { 
case DownloadManager.STATUS_PAUSED: 
break; 
case DownloadManager.STATUS_PENDING: 
break; 
case DownloadManager.STATUS_RUNNING: 
break; 
case DownloadManager.STATUS_SUCCESSFUL: 
break;  
}
}