/**
   * 選擇日期和時間
   */
  private void selectDataAndTime() {
    // 獲取當(dāng)前時間
    final Calendar calendar = Calendar.getInstance();
    /*
     * toast("當(dāng)前時間是：" + calendar.get(Calendar.YEAR) + "," +
     * calendar.get(Calendar.MONTH) + "," +
     * calendar.get(Calendar.DAY_OF_MONTH));
     */
    // 日期選擇對話框
    dataPickerDialog = new DatePickerDialog(this, new OnDateSetListener() {

      @Override
      public void onDateSet(DatePicker view, int year, int month, int day) {
        // 判斷用戶選擇的日期是否合法
        if (calendar.get(Calendar.YEAR) > year) {
          toast("時間有誤，請從新選擇");
          return;
        } else if (calendar.get(Calendar.YEAR) == year) {
          if (calendar.get(Calendar.MONTH) > month) {
            toast("時間有誤，請從新選擇");
            return;
          } else if (calendar.get(Calendar.MONTH) == month) {
            if (calendar.get(Calendar.DAY_OF_MONTH) > day) {
              toast("時間有誤，請從新選擇");
              return;
            } else {
              strDate = year + "-" + (month + 1) + "-" + day;
              if (timePickerDialog != null) {
                timePickerDialog.show();
              }
            }
          } else {
            strDate = year + "-" + (month + 1) + "-" + day;
            if (timePickerDialog != null) {
              timePickerDialog.show();
            }
          }
        } else {
          strDate = year + "-" + (month + 1) + "-" + day;
          if (timePickerDialog != null) {
            timePickerDialog.show();
          }
        }
      }
    }, calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar
        .get(Calendar.DAY_OF_MONTH));
    // 時間選擇對話框
    timePickerDialog = new TimePickerDialog(this, new OnTimeSetListener() {

      @Override
      public void onTimeSet(TimePicker view, int hour, int minute) {
        strTime = strDate + " " + hour + ":" + minute;
        timeTt.setText(strTime);
      }
    }, calendar.get(Calendar.HOUR), calendar.get(Calendar.MINUTE), true);
  }