自定义Dialog显示

final AlertDialog dlg = new AlertDialog.Builder(getActivity()).create();
dlg.show();
Window window = dlg.getWindow();
window.setContentView(R.layout.activity_contact_details_dialog);
TextView contacts_chat = (TextView)window.findViewById(R.id.contact_chat);
TextView contacts_sms = (TextView)window.findViewById(R.id.contact_sms);
TextView contacts_phone = (TextView)window.findViewById(R.id.contact_phone);