Android萬年歷實現源代碼

/**


日期工具類
/
public class DateUtils {

  /**
   * 某月的天數
   */
  private static int daysOfMonth = 0;

  /**
   * 具體某一天是星期幾
   */
  private static int dayOfWeek = 0;

  /**
   * 判斷是否為閏年
   *
   * @param year
   *            指定的年份
   * @return
   */
  public static boolean isLeapYear(int year) {
          if (year % 100 == 0 && year % 400 == 0) {
                  return true;
          } else if (year % 100 != 0 && year % 4 == 0) {
                  return true;
          }
          return false;
  }

  /**
   * 得到某月有多少天數
   *
   * @param isLeapyear
   *            目標年份
   * @param month
   *            目標月份
   * @return
   */
  public static int getDaysOfMonth(boolean isLeapyear, int month) {
          switch (month) {
          case 1:
          case 3:
          case 5:
          case 7:
          case 8:
          case 10:
          case 12:
                  daysOfMonth = 31;
                  break;
          case 4:
          case 6:
          case 9:
          case 11:
                  daysOfMonth = 30;
                  break;
          case 2:
                  if (isLeapyear) {
                          daysOfMonth = 29;
                  } else {
                          daysOfMonth = 28;
                  }

          }
          return daysOfMonth;
  }

  /**
   * 指定某年中的某月的第一天是星期幾
   *
   * @param isLeapyear
   *            目標年份
   * @param month
   *            目標月份
   * @return
   */
  public static int getWeekdayOfMonth(int year, int month) {
          Calendar cal = Calendar.getInstance();
          cal.set(year, month - 1, 1);
          dayOfWeek = cal.get(Calendar.DAY_OF_WEEK) - 1;
          return dayOfWeek;
  }

  /**
   * 獲取當前年份與月份
   *
   * @return 返回日期數組，整形array[0]，為年份，array[1]為月份, array[2]為日期
   */
  public static int[] getCurrentYearAndMonth() {
          int[] result = new int[3];
          SimpleDateFormat sdf = new SimpleDateFormat("yyyy-M-d");
          String str = "";
          Date date = new Date();

          str = sdf.format(date); // 當期日期
          result[0] = Integer.parseInt(str.split("-")[0]);
          result[1] = Integer.parseInt(str.split("-")[1]);
          result[2] = Integer.parseInt(str.split("-")[2]);

          return result;
  }

}


//日歷適配器：
/**

日歷適配器
*/
public class CalendarAdapter extends BaseAdapter{

  private Context context;
  private TextView dateText;

  /**
   * 時間
   */
  private String[] dateTime;

  /**
   * 判斷是不是當月的日期
   */
  private int[] dayFlag;

  /**
   *判斷是否是已簽到日
   */
  private int[] signedFlag;

  public CalendarAdapter(Context context, String[] dateTime, int[] dayFlag, int[] signedFlag){
          this.context = context;
          this.dateTime = dateTime;
          this.dayFlag = dayFlag;
          this.signedFlag = signedFlag;
  }

  @Override
  public int getCount() {
          // TODO Auto-generated method stub
          return dateTime.length;
  }

  @Override
  public Object getItem(int position) {
          // TODO Auto-generated method stub
          return null;
  }

  @Override
  public long getItemId(int position) {
          // TODO Auto-generated method stub
          return 0;
  }

  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
          dateText = new TextView(context);

          dateText.setGravity(Gravity.CENTER);
          dateText.setTextSize(18);
          dateText.setWidth(46);
          dateText.setHeight(56);
          dateText.setPadding(5, 5, 5, 5);
          dateText.setText(dateTime[position]);

          //如果不是當月的日期
          if(position > 6 && dayFlag[position] == 0){
                  dateText.setTextColor(Color.parseColor("#303030"));
          }else if(position > 6 && dayFlag[position] == 1){
                  dateText.setTextColor(Color.parseColor("#7F7F7F"));
          }else if(position < 7){
                  dateText.setTextColor(Color.parseColor("#7F7F7F"));
          }

          //判斷是否為周末，改變字體顏色
          if(position > 6 && position % 7 == 0){
                  dateText.setTextColor(Color.parseColor("#FF5F20"));

          }else if(position > 6 && (position+1) % 7 ==0){
                  dateText.setTextColor(Color.parseColor("#FF5F20"));
          }

          //判斷是否為歷史簽到日,是則改變背景
          if(dayFlag[position] == 1){
                  for(int index=0; index<signedFlag.length; index++){
                          if(dateTime[position].equals("" + signedFlag[index])){
                                  dateText.setBackgroundColor(Color.parseColor("#FEDED2"));
                                  //如果是最新簽到的日期，改變字體，背景
                                  if(index == 0){
                                          dateText.setBackgroundColor(Color.parseColor("#FF5F20"));
                                          dateText.setTextColor(Color.parseColor("#FFFFFE"));
                                  }
                          }
                  }



            }

            return dateText;
    }


}
//最后是使用時的方法
         /**

     * 當月的天數
     */
    private String[] monthData;

    /**
     * 歷史簽到數
     */
    private String[] historySignRecord;

    /**
     * 判斷是否為當月的
     */
    private int[] dayFlag;

    /**
     * 是否為已簽到日
     */
    private int[] daySignedFlag;

    /**
     * 當前年月日日期
     */
    private int[] currentDate;

    /**
     * 一個月中的第一天是星期幾
     */
    private int firstDayOfMonth;

    /**
     * 一個月的總天數
     */
    private int daysOFMonth;
    /**
     * 上個月的總天數
     */
    private int lastDaysOFMonth;
    private int tempYear;
    private int tempMonth;
    private int index;


    /**
     * 初始化日歷相關數據
     *
     * @param year
     *            指定年份
     * @param month
     *            指定月份
     */
    private void initCalData(int year, int month) {
            // 當月日歷顯示在49格中
            int num;
            monthData = new String[49];
            dayFlag = new int[49];

            firstDayOfMonth = DateUtils.getWeekdayOfMonth(year, month);

            currentDateText.setText(year + "年" + month + "月");

            // 判斷是否為閏年
            if (DateUtils.isLeapYear(year)) {
                    daysOFMonth = DateUtils.getDaysOfMonth(true, month);
                    lastDaysOFMonth = DateUtils.getDaysOfMonth(true, month - 1);
            } else {
                    daysOFMonth = DateUtils.getDaysOfMonth(false, month);
                    lastDaysOFMonth = DateUtils.getDaysOfMonth(false, month - 1);
            }

            // 前7個格子為周一到周日文字說明
            for (index = 0; index < 7; index++) {
                    monthData[index] = ShopBaseMessage.WEEK_DATA[index];
                    dayFlag[index] = 0;
            }

            // 顯示上個月的日期
            if (firstDayOfMonth == 0) {
                    firstDayOfMonth = 7;
            }

            // 如果是周日為第一天，則留一行上月的天數
            for (index = 7 + firstDayOfMonth - 1; index >= 7; index--, lastDaysOFMonth--) {
                    monthData[index] = lastDaysOFMonth + "";
                    dayFlag[index] = 0;
            }

            // 當月的天數
            for (num = 1, index = 7 + firstDayOfMonth; index < 7 + firstDayOfMonth
                            + daysOFMonth; index++, num++) {
                    monthData[index] = num + "";
                    dayFlag[index] = 1;
            }

            // 顯示下個月的日期
            for (num = 1, index = 7 + firstDayOfMonth + daysOFMonth; index < 49; index++, num++) {
                    monthData[index] = num + "";
                    dayFlag[index] = 0;
            }

            initSignedFlag(year, month);

            calAdapter = new CalendarAdapter(this, monthData, dayFlag, daySignedFlag);
            calGridView.setAdapter(calAdapter);
            calGridView.setSelector(new ColorDrawable(Color.TRANSPARENT)); // 去除gridView邊框
    }</pre><br />