@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
    if(v == et_electricite_€){
        if(et_electricite_€.length()>=1){
            if (keyCode >= 7 && keyCode <= 16 ) {
                et_electricite.setText(String.valueOf(new BigDecimal(Double.parseDouble(et_electricite_€.getText().toString())/tarif).setScale(0, RoundingMode.HALF_UP).intValue()));
                return true;

            }
        }


    }



    return false;
}