Edit/Delete rows of sqlLite data base in android

i use this tutorial for writing an android proje that shows data base's field in ListView. now i want to Edit them (edit/delete) with ActionMode's buttons. i use this code but it doesn't work.

public void editBTN() {
    Intent i = new Intent(getApplicationContext(),AddActivity.class);
    i.putExtra("Id", testId);
    i.putExtra("Number" ,test_number);
    i.putExtra("update", true);
    startActivity(i);
}

would you please help me towrite EDITing and DELETing code?thanks!