code.java

  final StorageReference storageReference = mStorageRef.getRoot();
        storageReference.child("uploads").child(fileNAME).putFile(pdfUri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
            @Override
            public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {

               Task<Uri> url = taskSnapshot.getMetadata().getReference().getDownloadUrl();
               
               url.addOnCompleteListener(new OnCompleteListener<Uri>() {
                                             @Override
                                             public void onComplete(@NonNull Task<Uri> task) {
                                                 
                                                 DatabaseReference databaseReference = mdatabaseref.getRef();
                                                 databaseReference.child("uploads").child(fileNAME).setValue(task.getResult()).addOnCompleteListener(new OnCompleteListener<Void>() {
                                                     @Override
                                                     public void onComplete(@NonNull Task<Void> task) {
                                                         if(task.isSuccessful()){
                                                             Toast.makeText(StaffHealthWellnessActivity.this,"File Sucessfully Uploaded", Toast.LENGTH_SHORT).show();
                                                             Intent intent = new Intent(StaffHealthWellnessActivity.this,StaffViewHealthWelness.class);
                                                             startActivity(intent);
                                                         }else {

                                                             Toast.makeText(StaffHealthWellnessActivity.this,"File NOT Sucessfully Uploaded", Toast.LENGTH_SHORT).show();

                                                         }
                                                     }
                                                 });
                                             }
                                         });