Opening pdf on android device error: file exposed beyond app through intent.getdata()

In my application I download the pdf from an API and store the file on the local file system. Then I try to open the pdf file with the built in viewer of the user. The next message appear:
*.pdf file exposed beyond app through intent.getdata().

 public static void OpenPDF(Context context, string filePath)
        {            
            //Open it up
            Android.Net.Uri pdfPath = Android.Net.Uri.FromFile(new Java.IO.File(filePath));
            Intent intent = new Intent(Intent.ActionView);
            intent.SetDataAndType(pdfPath, "application/pdf");
            intent.SetFlags(ActivityFlags.GrantReadUriPermission);
            intent.SetFlags(ActivityFlags.NewTask);
            intent.SetFlags(ActivityFlags.ClearWhenTaskReset);
            context.StartActivity(intent);
        }

Am i missing something?