Open pdf document via Intent?

Question

I have an application that generates a pdf through a button and when clicking on the button opens a alertdialog where I name my file and therefore opens a snackbar with the title " Do you want to open the file ?" and a "yes" button and when clicking it opens the download directory and not the Documents and when clicking on some PDF it does not open and return to the application. What can it be ?

Follow snippet of the snackbar button:

 Snackbar snackbar = Snackbar.make(constraintLayout,"Deseja abrir arquivo :", Snackbar.LENGTH_INDEFINITE);
        snackbar.setAction(" ", new View.OnClickListener() {
            @Override
            public void onClick(View v) {


                String pdf = nomepdf.getText().toString();
                File file = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS);

                Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
                intent.setDataAndType(Uri.parse(String.valueOf(file+"/"+pdf+".pdf")), "application/pdf");
                intent.addCategory(Intent.CATEGORY_OPENABLE);


                Intent chooser = Intent.createChooser(intent, "Open File !");
                startActivity(chooser);


            }

        });

Answer 1

Remove setDataAndType Add Uri and type separately as follows:

Intent.setType("application/pdf") // identifica o tipo de arquivo que vc quer compartilhar, isso permite que a lista de programas exibidas seja correta(so exibira apps capazes de lerem pdf
Intent.putExtra(EXTRA_STREAM, uri) //adiciona o arquivo a ser compartilhado
Intent.setAction(ACTION_SEND)
Intent.setFlags(FLAG_GRANT_READ_URI_PERMISSION)