java - 在Android中转换日期格式？

我正在研究日历日期选择器。我正在获取格式为2013/7/7的日期，但我希望格式为2013/07/07
码：

protected Dialog onCreateDialog(int id)
{

    Calendar c = Calendar.getInstance();
    int cyear = c.get(Calendar.YEAR);
    int cmonth = c.get(Calendar.MONTH);
    int cday = c.get(Calendar.DAY_OF_MONTH);

    switch (id) {
    case DATE_DIALOG_ID:
        return new DatePickerDialog(this,  mDateSetListener,  cyear, cmonth, cday);
    }


    private DatePickerDialog.OnDateSetListener mDateSetListene = new DatePickerDialog.OnDateSetListener()
    {
        // onDateSet method
        public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
        String date_selected = String.valueOf(year)+" /"+String.valueOf(monthOfYear+1)+" /"+String.valueOf(dayOfMonth);

        dob.setText(date_selected);

    }
};

最佳答案

String strDate="2013/7/7";
                String[] strsplit=strDate.split("/");
                int year=Integer.parseInt(strsplit[0]);
                int month=Integer.parseInt(strsplit[1]);
                int day=Integer.parseInt(strsplit[2]);

                if((month)<=9)
                    strDate+="0";
                strDate+=(month )+"/";
                if(day<=9)
                    strDate+="0";
                strDate+=(day)+"/";
                strDate+=(year);