I'm trying to download a file using the android DownloadManager, access the file, and write it to a new location (in this example I'm downloading a database which is compiled server side and needs to be wrote to the /database/ directory).
I've been reading up and managed to download the file, and activate the BroadcastReceiver, but at this point I get stuck.
I've returned the ParcelFileDecriptor file but I'm having trouble converting it to a stream in any way. I can't decide if the ParcelFileDecriptor.AutoCloseInputStream is a red herring or not, but I'm pretty sure the ParcelFileDecriptor has relativity to a stream, but I'm really struggling to work it out. Any help would be much appreciated.
I worked this out about 5 minuets after posting and feel rather stupid now. Anyway, assuming you've started the download already and set up the Broadcast Reciver, the following code will do the job...
ParcelFileDescriptor file = dMgr.openDownloadedFile(downloadId);
File dbFile = getDatabasePath(Roads.DATABASE_NAME);
InputStream fileStream = new FileInputStream(file.getFileDescriptor());
OutputStream newDatabase = new FileOutputStream(dbFile);
byte[] buffer = new byte[1024];
int length;
while((length = fileStream.read(buffer)) > 0)
{
newDatabase.write(buffer, 0, length);
}
newDatabase.flush();
fileStream.close();
newDatabase.close();
If you're looking for more information on overwriting a database with your own check this link (Also where most of the above info has come from):
http://www.reigndesign.com/blog/using-your-own-sqlite-database-in-android-applications/
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