Open PDF file Android

open_pdf.java

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
     File file=new File(mFilePath);
     Uri uri = FileProvider.getUriForFile(this, getPackageName() + ".provider", file);
     intent = new Intent(Intent.ACTION_VIEW);
     intent.setData(uri);
     intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
     startActivity(intent);
 } else {
     intent = new Intent(Intent.ACTION_VIEW);
     intent.setDataAndType(Uri.parse(mFilePath), "application/pdf");
     intent = Intent.createChooser(intent, "Open File");
     intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
     startActivity(intent);
 }