Android Downloadmanager Progress

Using ProgressBar with DownloadManager

Solution

Step 1. Declare the following variables in your class

// Indicate that we would like to update download progress
private static final int UPDATE_DOWNLOAD_PROGRESS = 1;

// Use a background thread to check the progress of downloading
private final ExecutorService executor = Executors.newFixedThreadPool(1);

// Use a hander to update progress bar on the main thread
private final Handler mainHandler = new Handler(Looper.getMainLooper(), new Handler.Callback() {
    @Override
    public boolean handleMessage(@NonNull Message msg) {
        if (msg.what == UPDATE_DOWNLOAD_PROGRESS) {
            int downloadProgress = msg.arg1;

            // Update your progress bar here.
            progressBar.setProgress(downloadProgress);
        }
        return true;
    }
});

Step 2. Modify your downloadFile() method

public void downloadFile(Context context, String fileName, String fileExtension, String destinationDirectory, String url) {
    DownloadManager downloadManager = (DownloadManager) context.
            getSystemService(Context.DOWNLOAD_SERVICE);

    Uri uri = Uri.parse(url);
    DownloadManager.Request request = new DownloadManager.Request(uri);

    request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
    request.setDestinationInExternalFilesDir(context, destinationDirectory, fileName + fileExtension);

    long downloadId = downloadManager.enqueue(request);

    // Run a task in a background thread to check download progress
    executor.execute(new Runnable() {
        @Override
        public void run() {
            int progress = 0;
            boolean isDownloadFinished = false;
            while (!isDownloadFinished) {
                Cursor cursor = downloadManager.query(new DownloadManager.Query().setFilterById(downloadId));
                if (cursor.moveToFirst()) {
                    int downloadStatus = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS));
                    switch (downloadStatus) {
                        case DownloadManager.STATUS_RUNNING:
                            long totalBytes = cursor.getLong(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES));
                            if (totalBytes > 0) {
                                long downloadedBytes = cursor.getLong(cursor.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR));
                                progress = (int) (downloadedBytes * 100 / totalBytes);
                            }

                            break;
                        case DownloadManager.STATUS_SUCCESSFUL:
                            progress = 100;
                            isDownloadFinished = true;
                            break;
                        case DownloadManager.STATUS_PAUSED:
                        case DownloadManager.STATUS_PENDING:
                            break;
                        case DownloadManager.STATUS_FAILED:
                            isDownloadFinished = true;
                            break;
                    }
                    Message message = Message.obtain();
                    message.what = UPDATE_DOWNLOAD_PROGRESS;
                    message.arg1 = progress;
                    mainHandler.sendMessage(message);
                }
            }
        }
    });
}

Note: Remember to release the executor and handler after downloading.

executor.shutdown();
mainHandler.removeCallbacksAndMessages(null);

Show Download progress inside activity using DownloadManager

You are dividing two integers:

final double dl_progress = (bytes_downloaded / bytes_total) * 100;

As bytes_downloaded is less than bytes_total, (bytes_downloaded / bytes_total) will be 0, and your progress will therefore always be 0.

Change your calculation to

final int dl_progress = (int) ((bytes_downloaded * 100l) / bytes_total);

to obtain the progress in whole (albeit floored) percentiles.

showing download progress in progress bar using DownloadManager

You have a Logic error, Your Query is out of the while loop where the UI is updated

private void startAppDownload() {

    new Thread(new Runnable() {
        @Override
        public void run() {
            boolean isDownloading = true;
            int downloadStatus, totalBytesDownloaded, totalBytes;

            while (isDownloading) {

                DownloadManager.Query downloadQuery = new DownloadManager.Query();
                downloadQuery.setFilterById(downloadID);

                Cursor cursor = downloadManager.query(downloadQuery);
                cursor.moveToFirst();

                totalBytesDownloaded = cursor.getInt(
                        cursor.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR)
                );

                totalBytes = cursor.getInt(
                        cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES)
                );

                downloadStatus = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS));

                if(downloadStatus == DownloadManager.STATUS_SUCCESSFUL) {
                    isDownloading = false;
                    break;;
                }

                final int downloadProgress = (int) ((double)totalBytesDownloaded / (double)totalBytes * 100f);

                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        downloadProgressBar.setProgress(downloadProgress);
                    }
                });
            }

            cursor.close();
        }
    }).start();
}

Progress Bar not showing with DownloadManager in android?

It doesn't work for you because your code related to tracking progress is inside a receiver which is called when the download is already finished. What you want to do is start a new thread which will poll the DownloadManager for the information in a loop until it's finished:

final long downloadId = dm.enqueue(request);

new Thread(new Runnable() {

    @Override
    public void run() {

        while (true) {

            DownloadManager.Query q = new DownloadManager.Query();
            q.setFilterById(downloadId);

            Cursor cursor = manager.query(q);
            cursor.moveToFirst();
            int bytesDownloaded = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR));
            int bytesTotal = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES));

            if (cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS)) == DownloadManager.STATUS_SUCCESSFUL) {
                break;
            }

            final int progress = (int) ((bytesDownloaded * 100l) / bytesTotal);

            runOnUiThread(new Runnable() {

                @Override
                public void run() {

                    progressBar.setProgress(progress);

                }
            });
            cursor.close();
        }

    }
}).start();

Download Manager Progress Not Visible in the Notification Area

Why This Happens in the first place?

The cause of the problem is the Android Download Manager's Notification was disabled in the settings. (It is the new default for my Galaxy S7 - SM930W8 which comes with the new Android N (7.0) Update)

The solution 1

1. Go to the Settings > App
2. In the options click 'Show System Apps'
3. Find 'Download Manager' and open it
4. Click 'Notifications' under App Settings
5. Switch on Allow Notifications

After completing the above steps the above piece of code for downloading with notification working just fine.

The Solution 2

The above solution won't work with the general distribution of an application. We can't tell the users to do solution 1.

Adding your own small progress bar to show downloading percentage in your activity will give the user some idea that the file he/she requested is downloading.

Try to avoid notification because if the android download manager is giving the same notification then it is redundant. (default setting of show notification may vary device to device with respect to which ROM they are on)

So here is the code.

Uri uri = Uri.parse("file://" + destination);

url = "http:....."; //Valid File URL

//Set up download manager request

DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url));
request.setDescription("Downloading " + file_name);
request.setTitle("My Downloader");
request.setDestinationUri(uri); //URI is valid

//Start the download
DownloadManager manager = (DownloadManager) getContext()
                                .getSystemService(Context.DOWNLOAD_SERVICE);
final long downloadId = manager.enqueue(request);

final int UPDATE_PROGRESS = 5020;

final Handler handler = new Handler(){
    @Override
        public void handleMessage(Message msg) {
        if(msg.what==UPDATE_PROGRESS){
            String downloaded = String.format("%.2f MB", (double)((msg.arg1)/1024)/1024);
            String total = String.format("%.2f MB", (double) (msg.arg2)/1024)/1024);
            String status = downloaded + " / " + total;
            pDialog.setTitleText(status);
        }
        super.handleMessage(msg);
        }
    };
    new Thread(new Runnable() {
        @Override
        public void run() {
            boolean downloading = true;
            while (downloading) {
                DownloadManager.Query q = new DownloadManager.Query();
                q.setFilterById(downloadId);
                Cursor cursor = manager.query(q);
                cursor.moveToFirst();
                int bytes_downloaded = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR));
                int bytes_total = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES));
                if (cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS)) == DownloadManager.STATUS_SUCCESSFUL) {
                    downloading = false;
                }
                //Post message to UI Thread
                Message msg = handler.obtainMessage();
                msg.what = UPDATE_PROGRESS;
                //msg.obj = statusMessage(cursor);
                msg.arg1 = bytes_downloaded;
                msg.arg2 = bytes_total;
                handler.sendMessage(msg);
                cursor.close();
            }
      }
}).start();

The Solution 3

Adding request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED); also helps as @kunal mentioned.

DownloadManager download progress not visible

  private fun downloadPdf(fileName: String?, fileExtension: String?, destinationDirectory: String?, url: String?) {
        val downloadManager = getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager
        val uri = Uri.parse(url)
        val request = DownloadManager.Request(uri)
        request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED)
        request.setDestinationInExternalPublicDir(destinationDirectory, fileName + fileExtension)
        val downloadId = downloadManager.enqueue(request)

        thread {
            var downloading = true
            while (downloading){
                val query = DownloadManager.Query()
                query.setFilterById(downloadId)

                val cursor = downloadManager.query(query)
                if(cursor.moveToFirst()){
                    val bytesDownloaded = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR))
                    val bytesTotal = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES))

                    if(cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS)) == DownloadManager.STATUS_SUCCESSFUL){
                        downloading = false
                    }

                    val progress = ((bytesDownloaded * 100L)/bytesTotal).toInt()
                    runOnUiThread {
                        Log.i("pritishsawantprogress",progress.toString())
                    }

                    cursor.close()
                }
            }
        }

    }

---

Related Topics