Ggtcf

I am downloading a PDF using retrofit webservice. And then I am showing a self created notification to show that the file has been downloaded. But I am not able to understand how to show or open the file when clicked on notification.

Here's my notification call:

RestClient.webServices()
 .downloadFile(id)
 .enqueue(new Callback<ResponseBody>() 
 @Override
 public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) 

 if (response.isSuccessful()) 

 boolean writtenToDisk = writeResponseBodyToDisk(response.body());

 Log.e(TAG, "file download was a success? " + writtenToDisk);

 if (writtenToDisk) 

 showToast("Invoice downloaded successfully");
 showDownloadNotification();

 
 
 

 @Override
 public void onFailure(Call<ResponseBody> call, Throwable t) 

 
 );

Here's the writeResponseBodyToDisk() function:

private boolean writeResponseBodyToDisk(ResponseBody body) 
 try 
 // todo change the file location/name according to your needs
 File futureStudioIconFile = new File(Environment.getExternalStorageDirectory() + File.separator + "/bill.pdf");

 InputStream inputStream = null;
 OutputStream outputStream = null;

 try 
 byte[] fileReader = new byte[4096];

 long fileSize = body.contentLength();
 long fileSizeDownloaded = 0;

 inputStream = body.byteStream();
 outputStream = new FileOutputStream(futureStudioIconFile);

 while (true) 
 int read = inputStream.read(fileReader);

 if (read == -1) 
 break;
 

 outputStream.write(fileReader, 0, read);

 fileSizeDownloaded += read;

 // Log.d(TAG, "file download: " + fileSizeDownloaded + " of " + fileSize);
 

 outputStream.flush();

 return true;
 catch (IOException e) 
 return false;
 finally 
 if (inputStream != null) 
 inputStream.close();
 

 if (outputStream != null) 
 outputStream.close();
 
 
 catch (IOException e) 
 return false;
 

And here's the showDownloadNotification() function:

void showDownloadNotification() 
 try 
 Uri selectedUri = Uri.parse(Environment.getExternalStorageDirectory() + File.separator + "/invoice.pdf");
 Intent intent = new Intent(Intent.ACTION_VIEW);
 intent.setDataAndType(selectedUri, "resource/folder");
 // startActivity(intent);
 PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);


 NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
 .setSmallIcon(R.drawable.ic_logo_winds)
 .setContentTitle("Invoice downloaded")
 .setContentText("")
 .setAutoCancel(true)
 .setContentIntent(pendingIntent)
 .setPriority(NotificationCompat.PRIORITY_DEFAULT);

 NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);

 // notificationId is a unique int for each notification that you must define
 notificationManager.notify(1, builder.build());

 catch (Exception e) 
 Log.e(TAG, "Notification " + e.toString());
 

So when I tap on the created notification, nothing happens, and when I uncomment startActivity (intent); it crashes by saying cannot find activity for intent.
How do I open the file I have downloaded by clicking the notification I have created for it?

It seems like you're passing wrong data type to intent on showDownloadNotification() method. Here is how you can open PDF:

Uri selectedUri = Uri.parse(Environment.getExternalStorageDirectory() + File.separator + "/invoice.pdf");

Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(selectedUri, "application/pdf"); // here we set correct type for PDF
intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);

PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);