如何在Android中以两位数格式获取日期选择器月份字段

populateSetDate用下面的书面方法代替。

public void populateSetDate (int year, int month, int day){

        String monthString = String.valueOf(month);
        if (monthString.length() == 1) {
            monthString = "0" + monthString;
        }

        etPickupDate.setText(new StringBuilder().append(day).append("-")
                .append(monthString).append("-").append(year).append(" "));

        etDropDate.setText(new StringBuilder().append(day).append("-")
                .append(monthString).append("-").append(year).append(" "));
}