private void showDatePickerDialog() {
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(new Date());
    int year = calendar.get(Calendar.YEAR);
    final int month = calendar.get(Calendar.MONTH);
    int day = calendar.get(Calendar.DAY_OF_MONTH);

    DatePickerDialog datePickerDialog = new DatePickerDialog(getActivity(), AlertDialog.THEME_HOLO_LIGHT, onDateSetListener, year, month, day);
    datePickerDialog.setCancelable(true);
    DatePicker dp = datePickerDialog.getDatePicker();
    //设置当天为最小值
    dp.setMinDate(calendar.getTimeInMillis());
    //设置最大值是７天
    calendar.set(Calendar.DAY_OF_MONTH, day + 6);
    dp.setMaxDate(calendar.getTimeInMillis());
    try {
      //获取指定的字段
      Field field = dp.getClass().getDeclaredField("mYearSpinner");
      //解封装
      field.setAccessible(true);
      //获取当前实例的值
      NumberPicker np = ((NumberPicker) field.get(dp));
      np.setVisibility(View.GONE);
    } catch (NoSuchFieldException e) {
      e.printStackTrace();
    } catch (IllegalAccessException e) {
      e.printStackTrace();
    }
    datePickerDialog.show();

  }