黑莓开发学习入门系列，自己动手实现一个日历软件（六）

最近有点乱糟糟，还是继续写完剩下的：

根据黑莓开发学习入门系列，自己动手实现一个日历软件（二）实现一个黑莓应用程序最基本的结构，我们真正的可以实现日历了：

新建一个工程 calender:作为日历的完整工程开始实现一个日历小程序
创建类CalendarMain.java 作为日历的入口
创建日历布局外观类：CalenderLayout.java,作为主要的日历布局

CalendarMain类的应该如下结构：

package org.bulktree.calender;

import net.rim.device.api.ui.UiApplication;
import net.rim.device.api.ui.container.MainScreen;

public class CalendarMain extends UiApplication {

    public static void main(String[] args) {
        CalendarMain theApp = new CalendarMain();
        theApp.enterEventDispatcher();
    }

    public CalendarMain() {
        MainScreen mainScreen = new MainScreen();
        CalenderLayout calender = new CalenderLayout();
        mainScreen.add(calender.calLayout());
        pushScreen(mainScreen);
    }
}

黑莓程序入口总是先实现当前的屏幕pushScreen(mainScreen)压入当前屏幕队列，然后维护主应用程序事件线程。

对于屏幕布局就很简单了：先画一个布局图

我用Excel模拟出一个日历，不同的颜色区域（当前日历红色除外），把整个日历作为分成三块，如果按照BlackBerry程序的方式，分为三个布局管理器，最上面是一个HorizontalFieldManager，日历的周那个区域也是HorizontalFieldManager，日期区域每行看成一个HorizontalFieldManager，整体看成一个VerticalFieldManager，而整个日历可看成一个VerticalFieldManager去规范里面的布局。这样一个完整的日历就出来了。具体实现如下：

package org.bulktree.calender;

import java.util.Calendar;

import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.FocusChangeListener;
import net.rim.device.api.ui.Font;
import net.rim.device.api.ui.Manager;
import net.rim.device.api.ui.component.LabelField;
import net.rim.device.api.ui.container.HorizontalFieldManager;
import net.rim.device.api.ui.container.VerticalFieldManager;

public class CalenderLayout {

    private static String[] wks = {"日", "一", "二", "三", "四", "五", "六"};

    private LabelField ax = null;

    public Manager calLayout() {
        Manager calender = new VerticalFieldManager();
        //日历头
        Manager calHeader = new HorizontalFieldManager();
        Calendar cale = Calendar.getInstance();
        ChineseCalendar chin = new ChineseCalendar(cale);
        String calHeaderString = "阴历:" + CalendarUtil.getCurrentYear() + "年 " + chin.getChineseCalendarMonth() + "月 "+ chin.getChinaDayString() + "日{" + chin.getCyclical() + "-" + chin.getAnimalsYear() + "年}";
        ax = new LabelField(calHeaderString, LabelField.HCENTER);
        setFont(ax, 13, 1);
        calHeader.add(ax);
        LabelField ay = new LabelField("  阳历：" + CalendarUtil.getCurrentMonth() + "月");
        setFont(ay, 13, 1);
        calHeader.add(ay);

        calender.add(calHeader);
        //星期头
        Manager weakHeader = new HorizontalFieldManager();
        CalenderField whf = null;

        for (int i = 0; i < 7; i++) {
            whf = new CalenderField(wks[i], CalenderField.RECTANGLE, CalenderField.NON_FOCUSABLE, 1);
            setFont(whf, 15, 1);
            weakHeader.add(whf);
        }
        calender.add(weakHeader);

        //日历体
        int a = CalendarUtil.getWeekCurrntMonthFirstDay();
//        int a = CalendarUtil.getWeekMonthFirstDay(2011, 1);
        int b = CalendarUtil.getCurrentDaysOfMonth();
//        int b = CalendarUtil.getDaysOfMonth(2011, 1);
        Manager calBody = new HorizontalFieldManager();
        calBody.setBorder(1, 1, 1, 1);
        for (int i = 0; i < a; i++) {
            calBody.add(new CalenderField("", CalenderField.RECTANGLE, CalenderField.NON_FOCUSABLE, 1));
        }
        CalenderField yac = null;
        CalenderField yc = null;
        for (int i = 1; i <= b; i++) {
            Manager cellManger = new VerticalFieldManager();
            yac = new CalenderField(i + "", CalenderField.HCENTER, CalenderField.FOCUSABLE, 1);
            setFont(yac, 15, 0);
            cellManger.add(yac);
            Calendar cx = Calendar.getInstance();
            cx.set(Calendar.DATE, i);
            final ChineseCalendar chines = new ChineseCalendar(cx);
            yc = new CalenderField(chines.getChinaDayString(), CalenderField.HCENTER, CalenderField.NON_FOCUSABLE, 1);
            setFont(yc, 10, 0);

            yac.setFocusListener(new FocusChangeListener() {
                public void focusChanged(Field field, int eventType) {
                    String text = "阴历:" + chines.getChineseCalenderYear() + "年 " + chines.getChineseCalendarMonth() + "月 "+ chines.getChinaDayString() + "日{" + chines.getCyclical() + "-" + chines.getAnimalsYear() + "年}";
                    updateCalendarHeader(text);
                }
            });

            if (Calendar.getInstance().get(Calendar.DATE) == i) {
                setFont(yac, 15, 1);
                setFont(yc, 10, 1);
            }
            cellManger.add(yc);
            calBody.add(cellManger);
            if ((i + a) % 7 ==0) {
                calender.add(calBody);
                calBody = new HorizontalFieldManager();
            }
        }
        calender.add(calBody);

        return calender;
    }

    /**
     * 设置字体风格
     * @param obj
     * @param size
     * @param isBlod 是否加粗， 1加粗， 0 正常
     */
    private void setFont(Field obj, int size, int isBlod) {
        int fontStyle = isBlod == 1 ? Font.BOLD : Font.PLAIN;
        obj.setFont(Font.getDefault().derive(fontStyle, size));
    }

    private void updateCalendarHeader(String text) {
        ax.setText(text);
    }
}

这里面用到CalendarUtil工具类，ChineseCalendar农历工具类，CalenderField自定义的UI（上篇专门说明过）。现贴出代码如下：

package org.bulktree.calender;

import java.util.Calendar;

/**
* 日历工具类
*
* @author Administrator
*
*/
public class CalendarUtil {

    private static Calendar cal = Calendar.getInstance();

    public static String getCurrentYear() {
        return "" + cal.get(Calendar.YEAR);
    }

    public static String getCurrentMonth() {
        return "" + (cal.get(Calendar.MONTH) + 1);
    }

    //返回当前月第一天的星期
    public static int getWeekCurrntMonthFirstDay() {
        cal = Calendar.getInstance();
        return getWeekMonthFirstDay(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH));
    }

    //返回指定月第一天的星期
    public static int getWeekMonthFirstDay(int year, int month) {
        cal.set(Calendar.YEAR, year);
        cal.set(Calendar.MONTH, month);
        cal.set(Calendar.DATE, 1);
        return cal.get(Calendar.DAY_OF_WEEK) - 1;
    }

    //返回当月天数
    public static int getCurrentDaysOfMonth() {
        cal = Calendar.getInstance();
        return getDaysOfMonth(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH));
    }
    //返回指定月的天数
    public static int getDaysOfMonth(int year, int month) {
        cal.set(Calendar.YEAR, year);
        cal.set(Calendar.MONTH, month + 1);
        cal.set(Calendar.DAY_OF_MONTH, 1);
        cal.set(Calendar.DATE, cal.get(Calendar.DATE) -1);
        return cal.get(Calendar.DAY_OF_MONTH);
    }
}

package org.bulktree.calender;

import java.util.Calendar;

public class ChineseCalendar {
    private int year;
    private int month;
    private int day;
    private boolean leap;
    final static String chineseNumber[] = {"一", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二"};
    final static long[] lunarInfo = new long[]
    {0x04bd8, 0x04ae0, 0x0a570, 0x054d5, 0x0d260, 0x0d950, 0x16554, 0x056a0, 0x09ad0, 0x055d2,
     0x04ae0, 0x0a5b6, 0x0a4d0, 0x0d250, 0x1d255, 0x0b540, 0x0d6a0, 0x0ada2, 0x095b0, 0x14977,
     0x04970, 0x0a4b0, 0x0b4b5, 0x06a50, 0x06d40, 0x1ab54, 0x02b60, 0x09570, 0x052f2, 0x04970,
     0x06566, 0x0d4a0, 0x0ea50, 0x06e95, 0x05ad0, 0x02b60, 0x186e3, 0x092e0, 0x1c8d7, 0x0c950,
     0x0d4a0, 0x1d8a6, 0x0b550, 0x056a0, 0x1a5b4, 0x025d0, 0x092d0, 0x0d2b2, 0x0a950, 0x0b557,
     0x06ca0, 0x0b550, 0x15355, 0x04da0, 0x0a5d0, 0x14573, 0x052d0, 0x0a9a8, 0x0e950, 0x06aa0,
     0x0aea6, 0x0ab50, 0x04b60, 0x0aae4, 0x0a570, 0x05260, 0x0f263, 0x0d950, 0x05b57, 0x056a0,
     0x096d0, 0x04dd5, 0x04ad0, 0x0a4d0, 0x0d4d4, 0x0d250, 0x0d558, 0x0b540, 0x0b5a0, 0x195a6,
     0x095b0, 0x049b0, 0x0a974, 0x0a4b0, 0x0b27a, 0x06a50, 0x06d40, 0x0af46, 0x0ab60, 0x09570,
     0x04af5, 0x04970, 0x064b0, 0x074a3, 0x0ea50, 0x06b58, 0x055c0, 0x0ab60, 0x096d5, 0x092e0,
     0x0c960, 0x0d954, 0x0d4a0, 0x0da50, 0x07552, 0x056a0, 0x0abb7, 0x025d0, 0x092d0, 0x0cab5,
     0x0a950, 0x0b4a0, 0x0baa4, 0x0ad50, 0x055d9, 0x04ba0, 0x0a5b0, 0x15176, 0x052b0, 0x0a930,
     0x07954, 0x06aa0, 0x0ad50, 0x05b52, 0x04b60, 0x0a6e6, 0x0a4e0, 0x0d260, 0x0ea65, 0x0d530,
     0x05aa0, 0x076a3, 0x096d0, 0x04bd7, 0x04ad0, 0x0a4d0, 0x1d0b6, 0x0d250, 0x0d520, 0x0dd45,
     0x0b5a0, 0x056d0, 0x055b2, 0x049b0, 0x0a577, 0x0a4b0, 0x0aa50, 0x1b255, 0x06d20, 0x0ada0};

    //====== 传回农历 y年的总天数
    final private static int yearDays(int y) {
        int i, sum = 348;
        for (i = 0x8000; i > 0x8; i >>= 1) {
            if ((lunarInfo[y - 1900] & i) != 0) sum += 1;
        }
        return (sum + leapDays(y));
    }

    //====== 传回农历 y年闰月的天数
    final private static int leapDays(int y) {
        if (leapMonth(y) != 0) {
            if ((lunarInfo[y - 1900] & 0x10000) != 0)
                return 30;
            else
                return 29;
        } else
            return 0;
    }

    //====== 传回农历 y年闰哪个月 1-12 ,&nb#

posted on 2011-01-26 15:23 凌晨风阅读(2315) 评论(0) 编辑收藏所属分类: BlackBerry

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