Develop Reference

Download Manager with Google Drive URL

I'm trying to download a file stored in Google Drive using android DownloadManager.
I get the sign in token from Google like following:
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestIdToken(AppConfig.getInstance().get("google_client_id"))
.requestProfile()
.requestEmail()
.build();
I receive a notification with google drive file url and i pass it to the DownloadManager, passing to it the token:
String cookie = CookieManager.getInstance().getCookie(d.getURL());
request.addRequestHeader("Cookie",cookie);
request.addRequestHeader("Authorization", "OAuth " + profile.getToken());
//d is the document object, that contains url, file name, etcc
//Profile is a simple object class that hold the user data taken from sign Google, like token, name, email, etcc
Using a simple Broadcast Receiver to manage the download result (ACTION_DOWNLOAD_COMPLETE).
The download is done successfully, but the file is corrupted.
If i try to open it, the device (and pc) gives me a format error.
The file contains a HTML code of a Google page that says that there war an error, no more.
(The account that i'm using is enabled to read and dwonload the document form this specific drive storage)
Is this the correct way to download a Google Drive file using DownloadManager? Is it possible to do that?

Try whether this helps...
As in #saddamkamal 's answer, use the Google Drive download URL.
AsyncTask.execute(new Runnable() {
#Override
public void run() {
DownloadManager downloadmanager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
Uri uri = Uri.parse("https://drive.google.com/uc?id=<FILE_ID>&export=download");
DownloadManager.Request request = new DownloadManager.Request(uri);
request.setTitle("My File");
request.setDescription("Downloading");
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "file.extension");
downloadmanager.enqueue(request);
}
});

You can also downlaod file form google via this method
Refer to this Url
https://drive.google.com/uc?id=<FILE_ID>&export=download
Replace <FILE_ID> with your shareable file ID.
Further you can take help from this solution Download a file with Android, and showing the progress in a ProgressDialog
You can use the doInBackground function in it to solve your query.

Since file is downloaded.
Check the size of file in Google drive and your android.
Then make sure your file extension is correct.
Because file extension may not be present and android will treat it as binary file.
Now you have file extension in android. Install proper application to open it.
This is updated code
public class MainActivity extends AppCompatActivity {
private Button btn_download;
private long downloadID;
// using broadcast method
private BroadcastReceiver onDownloadComplete = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
//Fetching the download id received with the broadcast
long id = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1);
//Checking if the received broadcast is for our enqueued download by matching download id
if (downloadID == id) {
Toast.makeText(MainActivity.this, "Download Completed", Toast.LENGTH_SHORT).show();
}
}
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn_download = findViewById(R.id.download_btn);
// using broadcast method
registerReceiver(onDownloadComplete,new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
beginDownload();
}
});
}
#Override
public void onDestroy() {
super.onDestroy();
// using broadcast method
unregisterReceiver(onDownloadComplete);
}
private void beginDownload(){
String url = "http://speedtest.ftp.otenet.gr/files/test10Mb.db";
String fileName = url.substring(url.lastIndexOf('/') + 1);
fileName = fileName.substring(0,1).toUpperCase() + fileName.substring(1);
File file = Util.createDocumentFile(fileName, context);
DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url))
.setNotificationVisibility(DownloadManager.Request.VISIBILITY_HIDDEN)// Visibility of the download Notification
.setDestinationUri(Uri.fromFile(file))// Uri of the destination file
.setTitle(fileName)// Title of the Download Notification
.setDescription("Downloading")// Description of the Download Notification
.setRequiresCharging(false)// Set if charging is required to begin the download
.setAllowedOverMetered(true)// Set if download is allowed on Mobile network
.setAllowedOverRoaming(true);// Set if download is allowed on roaming network
DownloadManager downloadManager= (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
downloadID = downloadManager.enqueue(request);// enqueue puts the download request in the queue.
// using query method
boolean finishDownload = false;
int progress;
while (!finishDownload) {
Cursor cursor = downloadManager.query(new DownloadManager.Query().setFilterById(downloadID));
if (cursor.moveToFirst()) {
int status = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS));
switch (status) {
case DownloadManager.STATUS_FAILED: {
finishDownload = true;
break;
}
case DownloadManager.STATUS_PAUSED:
break;
case DownloadManager.STATUS_PENDING:
break;
case DownloadManager.STATUS_RUNNING: {
final long total = cursor.getLong(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES));
if (total >= 0) {
final long downloaded = cursor.getLong(cursor.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR));
progress = (int) ((downloaded * 100L) / total);
// if you use downloadmanger in async task, here you can use like this to display progress.
// Don't forget to do the division in long to get more digits rather than double.
// publishProgress((int) ((downloaded * 100L) / total));
}
break;
}
case DownloadManager.STATUS_SUCCESSFUL: {
progress = 100;
// if you use aysnc task
// publishProgress(100);
finishDownload = true;
Toast.makeText(MainActivity.this, "Download Completed", Toast.LENGTH_SHORT).show();
break;
}
}
}
}
}
}

Is there a simpler way to check which download has been completed?

I'm currently creating an app that needs to download a couple of videos then save the local path of it on a SQLite database.
At first, I wanted to get the URL of the video I downloaded but I can't seem to find anything that discusses about it. I tried to get COLUMN_MEDIAPROVIDER_URI and COLUMN_URI from the intent passed on the BroadcastReceiver for DownloadManager.ACTION_DOWNLOAD_COMPLETE but they return null.
Then I found about EXTRA_DOWNLOAD_ID. But if I use that, I still need to use something like a new HashMap that got the EXTRA_DOWNLOAD_ID of my download and the id of the video on my SQLite database for checking which is which.
I'm fine with that but I want to know if there's an easier way to do the thing I want.

I did this using OkHttp, as follows:
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(YOUR_URL)
.build();
client.newCall(request).enqueue(new Callback() {
#Override
public void onFailure(Call call, IOException e) {
// ERROR MESSAGE
}
#Override
public void onResponse(Call call, Response response) throws IOException {
if (response.isSuccessful()) {
response.body().byteStream(); // byteStream with your result.
}
}
});
Another thing, maybe would be better if you store the videos on memory and just the address in your SQLite.

Using the code below from the SO question here
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(action)) {
// get the DownloadManager instance
DownloadManager manager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
DownloadManager.Query q = new DownloadManager.Query();
Cursor c = manager.query(q);
if(c.moveToFirst()) {
do {
String name = c.getString(c.getColumnIndex(DownloadManager.COLUMN_LOCAL_FILENAME));
Log.i("DOWNLOAD LISTENER", "file name: " + name);
} while (c.moveToNext());
} else {
Log.i("DOWNLOAD LISTENER", "empty cursor :(");
}
c.close();
}
}
and saving the download id on my ArrayList I was able to make a simpler way to check which download is finished.
I modified it to look like this for my use case.
Cursor c = dlMgr.query(new DownloadManager.Query());
boolean found = false;
if(c.moveToFirst()) {
do {
String dlFilePath = c.getString(c.getColumnIndex(DownloadManager.COLUMN_LOCAL_FILENAME));
int dlId = Integer.parseInt( c.getString(c.getColumnIndex(DownloadManager.COLUMN_ID)) );
for(int x = 0; x < vidArrLst.size(); x++){
VideoAd va = vidArrLst.get(x);
if(va.getDownloadId() == dlId){
dbHelper.updateLocalPath(va.getVideoId(), dlFilePath);
va.setLocalPath(dlFilePath);
found = true;
break;
}
}
} while (c.moveToNext() && !found);
} else {
Log.d(TAG, "empty cursor :(");
}
UPDATE:
Sometimes this method will show that 2 downloads finished with the same file name which results to a video item to not have a local path. What I did is check if the local path is empty, download id is greater than 0, and if the download id is still downloading before playing a video so I can redownload a video and fix the gap and play the local file the next time the video needs to be played.

How to download Muliple files (image/video url) by DownloadManager in Android

Download Manager is the best way to download single file in android, It maintain Notification bar also.but how i can download Multiple files by it and show the whole downloading status by progressing bar in Notification.
Please suggest any library for it or any code snippet.

You can probably hide the DownloadManager's notification and show your own, that should do what you want.
To disable setNotificationVisibility(DownloadManger.VISIBILITY_HIDDEN); to hide the notification.
To show download progress, you can register a ContentObserver on DownloadManager's database to get periodic updates and update your own notification with it.
Cursor mDownloadManagerCursor = mDownloadManager.query(new DownloadManager.Query());
if (mDownloadManagerCursor != null) {
mDownloadManagerCursor.registerContentObserver(mDownloadFileObserver);
}
And the ContentObserver will look something like:
private ContentObserver mDownloadFileObserver = new ContentObserver(new Handler(Looper.getMainLooper())) {
#Override
public void onChange(boolean selfChange) {
Cursor cursor = mDownloadManager.query(new DownloadManager.Query());
if (cursor != null) {
long bytesDownloaded = 0;
long totalBytes = 0;
while (cursor.moveToNext()) {
bytesDownloaded += cursor.getLong(cursor.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR));
totalBytes += cursor.getLong(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES));
}
float progress = (float) (bytesDownloaded * 1.0 / totalBytes);
showNotificationWithProgress(progress);
cursor.close();
}
}
};
And the notification with progress can be shown with:
public void showNotificationWithProgress(Context context, int progress) {
NotificationManagerCompat.from(context).notify(0,
new NotificationCompat.Builder(context)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle("Downloading...")
.setContentText("Progress")
.setProgress(100, progress * 100, false)
.setOnGoing(true)
.build());
}

Android async task not stopping while download finished

I'm trying to download file using DownloadManager in Async Task. Here's the doInBackground() method
protected Boolean doInBackground(String... params) {
DownloadManager mgr = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
//String DIRECTORY_DOWNLOADS = m_context.getExternalFilesDir(null).getAbsolutePath();
Uri uri = Uri.parse(params[0]);
typ_mapy = Integer.parseInt(params[2]);
File download = new File(getExternalFilesDir(null) ,params[1]);
if(download.exists()){
info = "Existuje";
nazev_souboru=params[1];
return false;
}else{
try {
long lastDownload = mgr.enqueue(new DownloadManager.Request(uri)
.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI)
.setAllowedOverRoaming(false)
.setNotificationVisibility(Request.VISIBILITY_HIDDEN)
.setDestinationInExternalFilesDir(m_context,"/",params[1]));
Cursor c = mgr.query(new DownloadManager.Query().setFilterById(lastDownload));
while(c.moveToFirst())
{
publishProgress(String.valueOf(c.getLong(c.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES))), String.valueOf(c.getLong(c.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR))));
/*if(c.getLong(c.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR))>=c.getLong(c.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES))){
c.close();
return true;
}*/
c.close();
c = mgr.query(new DownloadManager.Query().setFilterById(lastDownload));
c.moveToFirst();
}
} catch (Exception e) {
return false;
}
return true;
}
}
You can see that I have a comment there. I thought that that condition will stop the loop, when download is finished, but when it's there, it simply calls onPostExecute() immediatly (although the download is running and finishes).
The problem is it stops calling the onProgressUpdate() where I update my progress bar.
Is there any way how to keep it in the while loop so the progress bar gets updated? If it's like this, it stays there in an endless loop. If I uncomment the condition, it finishes instantly.
EDIT:
I solved it by changing the loop like this:
boolean downloading = true;
while (downloading) {
DownloadManager.Query q = new DownloadManager.Query();
q.setFilterById(lastDownload);
Cursor cursor = mgr.query(q);
cursor.moveToFirst();
long bytes_downloaded = cursor.getLong(cursor
.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR));
long bytes_total = cursor.getLong(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES));
publishProgress(String.valueOf(bytes_total), String.valueOf(bytes_downloaded));
if (cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS)) == DownloadManager.STATUS_SUCCESSFUL) {
downloading = false;
}
}
Answer found here: Show Download progress inside activity using DownloadManager

Hi you have to register a broadcast receiver to receive downloading complete
you can refer https://github.com/commonsguy/cw-android/blob/master/Internet/Download/src/com/commonsware/android/download/DownloadDemo.java

DownloadManager double download

I have the following problem: Whenever I download a file with the DownloadManager it is downloaded twice (saved in the fashion "filename.extension" and "filename-1.extension"). Here is my code:
public void download() {
Request request = new Request(Uri.parse(_wrapper.getURL()));
request.setTitle(getFileName(_wrapper.getURL()));
request.setVisibleInDownloadsUi(false);
request.setDestinationInExternalFilesDir(_context, null, "/" + getFileName(_wrapper.getURL()));
_downloadID = _downloadManager.enqueue(request);
}
public BroadcastReceiver getDownloadFinishedBroadcastReceiver() {
BroadcastReceiver receiver = new BroadcastReceiver() {
#Override
public void onReceive(Context pContext, Intent pIntent) {
String action = pIntent.getAction();
if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(action)) {
Query query = new Query();
query.setFilterById(_downloadID);
Cursor cursor = _downloadManager.query(query);
if (cursor.moveToFirst()) {
File file = new File(ScruloidConstants.APPLICATION_DIRECTORY);
int status = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS));
if (status == DownloadManager.STATUS_SUCCESSFUL) {
String path = cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_FILENAME));
_wrapper.setFilePath(path);
_wrapper.setLastDownloaded(new Date());
if (_listener != null) {
_listener.onDownloadProjectTaskFinished(new TaskResult<ProjectWrapper>(_wrapper));
}
}
else if (status == DownloadManager.STATUS_FAILED) {
int reason = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_REASON));
DownloadFailedException ex = new DownloadFailedException(reason);
if (_listener != null) {
_listener.onDownloadProjectTaskFinished(new TaskResult<ProjectWrapper>(ex));
}
}
}
}
}
};
return receiver;
}
The ProjectWrapper _wrapper is just a simple Class that holds data, no logic is done there. The _listener just displays on the callback method a little Toast message. I debugged my app to make shure the download() Method is invoked only once. I hope you can help me find the error.

Unfortunately, DownloadManager is buggy and doesn't work correctly on all devices. Your problem is reported here: https://code.google.com/p/android/issues/detail?id=18462

I've got the same error on mobile devices with API 21, I've made a workaround to verify before creating a request, if the file name used to set de request destination was equal one of the last files already downloaded, or if its a substring of any previews downloaded
if (!mLastMediaDownloadedId.any { it.contains(outputFile.name) }) {
mLastMediaDownloadedId.add(outputFile.name)
val url =
AppConstants.AWS_MEDIA_BUCKET_PATH + scoutObjectType.endPoint() + "$scoutObjectId.png"
val request = DownloadManager.Request(Uri.parse(url))
.setDestinationUri(Uri.fromFile(outputFile))
.setTitle("Downlading media")
.setDescription("Downloading image medias")
.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE)
.setAllowedOverRoaming(true)
.setAllowedOverMetered(true)
val downloadId = it.enqueue(request)
downloadIds.add(downloadId)
downloadId
}
and where "outputFile" is the file name itself to be downloaded, in your case this should be "filename.extension"
PS: Sorry for the Kotlin code, but it should be a good representation for the workaround itself