Android鬼点子-近期项目总结（2）-日历-白红宇

最近的项目中遇到了一个日历，需要在日历上显示一些信息，日历有点击事件。

设计小姐姐给的效果图是这样的：

图1

实际作出来的真机截图，是这样的：

图2

实现这个效果还是比较容易的，我是用的是RecyclerView。

比较麻烦的就是日历的计算，加上农历。

图3

布局文件代码：

item的布局：

PPBall是一个圆形的自定义view,可以填充颜色，可以使用图片替代，这里就是显示那个红点。使用Grid布局，一周七天。

date_list.layoutManager = GridLayoutManager(this, 7)复制代码

这个RecyclerView的数据源是一个月份的天，也就是每一天都是一个数据，这个数据是通过Calendar给出的，传到Adapter里面的Calendar已经是选好了月份的。当然还有另一部分的数据是哪些天有提示的红点，今天是几号，选中了几号，这些数据在modelHolder中。

直接上Adapter的代码，只有100行，稍纵即逝：

package com.greendami.adapter.scheduleimport android.content.Contextimport android.support.v7.widget.RecyclerViewimport android.view.LayoutInflaterimport android.view.Viewimport android.view.ViewGroupimport android.widget.TextViewimport com.allrun.dangjianshisanshi.Rimport com.allrun.dangjianshisanshi.actvity.schedule.ScheduleActivityimport com.allrun.dangjianshisanshi.ardangjianshisanshi.entity.entity_base_obj_objlistimport com.allrun.dangjianshisanshi.ardangjianshisanshi.entity.entity_null_objimport com.allrun.dangjianshisanshi.ardangjianshisanshi.entity.scheduleObjimport com.allrun.dangjianshisanshi.model.ModelHolderimport com.allrun.dangjianshisanshi.util.LunarCalendarimport com.allrun.dangjianshisanshi.widget.PPBallimport org.jetbrains.anko.backgroundDrawableimport java.text.SimpleDateFormatimport java.util.*/** * Created by greendami on 2017/8/24. */class DateNavigateAdapter(var context: Context, var c: Calendar, var modelHolder: ModelHolder) : RecyclerView.Adapter
    
     () {    var emptyCount = 0    var today = Date()    var sdf = SimpleDateFormat("yyyyMMdd")    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {        val view = LayoutInflater.from(parent.context).inflate(R.layout.date_navigate_item, parent, false)        return MyViewHolder(view)    }    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {        initNormal(holder, position)    }    private fun initNormal(holder: RecyclerView.ViewHolder, position: Int) {        var myHolder: MyViewHolder = holder as MyViewHolder        if (position < emptyCount) {            myHolder.tv.visibility = View.GONE        } else {            myHolder.tv.text = "${position + 1 - emptyCount}"            c.set(Calendar.DATE, position + 1 - emptyCount)            myHolder.tv2.text = LunarCalendar().getLunarDate(c.get(Calendar.YEAR),c.get(Calendar.MONTH)+1,c.get(Calendar.DAY_OF_MONTH),false)            var dateString =  sdf.format(c.time)            //周日周六的颜色浅            if(position%7 == 0 ||position%7 == 6){                myHolder.tv.setTextColor(context.resources.getColor(R.color.text_color4))            }            //显示今天            if(sdf.format(today) == dateString){                myHolder.ll_tv.backgroundDrawable = context.resources.getDrawable(R.drawable.red_circle3)                myHolder.tv.setTextColor(context.resources.getColor(R.color.text_color2))                myHolder.tv2.setTextColor(context.resources.getColor(R.color.text_color4))            }            //选中            if(modelHolder.get
     
      
       >().value?.obj?.s != null                    &&modelHolder.get
       
        
         >().value!!.obj.s == dateString){                myHolder.ll_tv.backgroundDrawable = context.resources.getDrawable(R.drawable.red_circle2)                myHolder.tv.setTextColor(context.resources.getColor(R.color.white))                myHolder.tv2.setTextColor(context.resources.getColor(R.color.white))            }            //显示点点            myHolder.point.visibility = View.GONE            modelHolder.get
         
          
           >().value?.objList?.forEach { if(it.replace("-","") == dateString){ myHolder.point.visibility = View.VISIBLE return@forEach } } myHolder.ll_tv.setOnClickListener { context as ScheduleActivity c.set(Calendar.DATE, position + 1 - emptyCount) modelHolder.get
           
            
             >().value!!.obj = entity_null_obj(dateString) modelHolder.callUpdate() } } } override fun getItemViewType(position: Int): Int { return position } //获得当月天数，并加上前面的空白天数 override fun getItemCount(): Int { c.set(Calendar.DATE, 1)//把日期设置为当月第一天 emptyCount = c.get(Calendar.DAY_OF_WEEK) - 1//第一天是星期几，前面要空出来 c.roll(Calendar.DATE, -1)//日期回滚一天，也就是最后一天 val maxDate = c.get(Calendar.DATE) return maxDate + emptyCount } internal inner class MyViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) { var tv: TextView = itemView.findViewById(R.id.tv) var tv2: TextView = itemView.findViewById(R.id.tv2) var ll_tv: View = itemView.findViewById(R.id.ll_tv) var point = itemView.findViewById
             
              (R.id.point) }}复制代码

其实有的月份的第一天可能不是星期日，所以开始可能有几天是空白的，如下图：

图4

2017年9月1日就是星期五，前面就空出来了几天，这几天的数量需要算进来，然后在getItemCount()中加上。这里代码上有注释。然后在onBindViewHolder（）的时候，把空白几天的Item隐藏。

if (position < emptyCount) {      myHolder.tv.visibility = View.GONE}复制代码

这里使用View.GONE并不会让后面的item把前面的Item的位置顶掉。因为整个数据集的数量我们已经给定了。这里是数量决定的。

如果只是显示日期：myHolder.tv.text = "${position + 1 - emptyCount}" 这样就可以通过Position和前面的空白Item的数量直接算出。

下面是显示农历，具体农历的算出，我是在网上找的代码：

package com.greendami.util;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Calendar;import java.util.Date;/** * Created by greendami on 2017/10/13. */public class LunarCalendar {    private int year; // 农历的年份    private int month;    private int day;    private String lunarMonth; // 农历的月份    private boolean leap;    public int leapMonth = 0; // 闰的是哪个月    final static String chineseNumber[] = { "正", "二", "三", "四", "五", "六", "七",            "八", "九", "十", "冬", "腊" };    static SimpleDateFormat chineseDateFormat = new SimpleDateFormat(            "yyyy年MM月dd日");    final static long[] lunarInfo = new long[] {            0x4bd8, 0x4ae0, 0xa570, 0x54d5, 0xd260, 0xd950, 0x5554, 0x56af, 0x9ad0, 0x55d2,            0x4ae0, 0xa5b6, 0xa4d0, 0xd250, 0xd255, 0xb54f, 0xd6a0, 0xada2, 0x95b0, 0x4977,            0x497f, 0xa4b0, 0xb4b5, 0x6a50, 0x6d40, 0xab54, 0x2b6f, 0x9570, 0x52f2, 0x4970,            0x6566, 0xd4a0, 0xea50, 0x6a95, 0x5adf, 0x2b60, 0x86e3, 0x92ef, 0xc8d7, 0xc95f,            0xd4a0, 0xd8a6, 0xb55f, 0x56a0, 0xa5b4, 0x25df, 0x92d0, 0xd2b2, 0xa950, 0xb557,            0x6ca0, 0xb550, 0x5355, 0x4daf, 0xa5b0, 0x4573, 0x52bf, 0xa9a8, 0xe950, 0x6aa0,            0xaea6, 0xab50, 0x4b60, 0xaae4, 0xa570, 0x5260, 0xf263, 0xd950, 0x5b57, 0x56a0,            0x96d0, 0x4dd5, 0x4ad0, 0xa4d0, 0xd4d4, 0xd250, 0xd558, 0xb540, 0xb6a0, 0x95a6,            0x95bf, 0x49b0, 0xa974, 0xa4b0, 0xb27a, 0x6a50, 0x6d40, 0xaf46, 0xab60, 0x9570,            0x4af5, 0x4970, 0x64b0, 0x74a3, 0xea50, 0x6b58, 0x5ac0, 0xab60, 0x96d5, 0x92e0,            0xc960, 0xd954, 0xd4a0, 0xda50, 0x7552, 0x56a0, 0xabb7, 0x25d0, 0x92d0, 0xcab5,            0xa950, 0xb4a0, 0xbaa4, 0xad50, 0x55d9, 0x4ba0, 0xa5b0, 0x5176, 0x52bf, 0xa930,            0x7954, 0x6aa0, 0xad50, 0x5b52, 0x4b60, 0xa6e6, 0xa4e0, 0xd260, 0xea65, 0xd530,            0x5aa0, 0x76a3, 0x96d0, 0x4afb, 0x4ad0, 0xa4d0, 0xd0b6, 0xd25f, 0xd520, 0xdd45,            0xb5a0, 0x56d0, 0x55b2, 0x49b0, 0xa577, 0xa4b0, 0xaa50, 0xb255, 0x6d2f, 0xada0,            0x4b63, 0x937f, 0x49f8, 0x4970, 0x64b0, 0x68a6, 0xea5f, 0x6b20, 0xa6c4, 0xaaef,            0x92e0, 0xd2e3, 0xc960, 0xd557, 0xd4a0, 0xda50, 0x5d55, 0x56a0, 0xa6d0, 0x55d4,            0x52d0, 0xa9b8, 0xa950, 0xb4a0, 0xb6a6, 0xad50, 0x55a0, 0xaba4, 0xa5b0, 0x52b0,            0xb273, 0x6930, 0x7337, 0x6aa0, 0xad50, 0x4b55, 0x4b6f, 0xa570, 0x54e4, 0xd260,            0xe968, 0xd520, 0xdaa0, 0x6aa6, 0x56df, 0x4ae0, 0xa9d4, 0xa4d0, 0xd150, 0xf252,            0xd520};    // 农历部分假日    final static String[] lunarHoliday = new String[] {            "0101 春节",            "0115 元宵",            "0505 端午",            "0707 七夕",            "0715 中元",            "0730 地藏",//            "0802 灶君诞",            "0815 中秋",//            "0827 先师诞",            "0909 重阳",            "1208 腊八",            "1223 小年",            "0100 除夕" };    // 公历部分节假日    final static String[] solarHoliday = new String[] {            "0101 元旦",//            "0110 中国110宣传日",            "0214 情人",//            "0221 国际母语日",//            "0303 国际爱耳日",            "0308 妇女",            "0312 植树",//            "0315 消费者权益日",//            "0322 世界水日",//            "0323 世界气象日",            "0401 愚人",//            "0407 世界卫生日",            "0501 劳动",            "0504 青年",            "0512 护士",//            "0519 全国助残日",//            "0531 世界无烟日",            "0601 儿童",//            "0626 国际禁毒日",            "0701 建党", //1921            "0801 建军", //1933            //"0808 父亲节",//            "0909 毛泽东逝世纪念", //1976            "0910 教师",//            "0917 国际和平日",//            "0927 世界旅游日",//            "0928 孔子诞辰",            "1001 国庆",//            "1006 老人节",//            "1007 国际住房日",//            "1014 世界标准日",//            "1024 联合国日",//            "1112 孙中山诞辰纪念",//            "1210 世界人权日",//            "1220 澳门回归纪念",            "1224 平安",            "1225 圣诞"//            "1226 毛泽东诞辰纪念"    };    //24节气    final static String[] sTermInfo = new String[]{            // 时节     气候            "小寒","大寒",            "立春","雨水",            "惊蛰","春分",            "清明","谷雨",            "立夏","小满",            "芒种","夏至",            "小暑","大暑",            "立秋","处暑",            "白露","秋分",            "寒露","霜降",            "立冬","小雪",            "大雪","冬至"    };    final static String[] constellations = new String[]{            "摩蝎座:12.22—01.19","水瓶座:01.20—02.18","双鱼座:02.19—03.20","白羊座:03.21—04.19",            "金牛座:04.20—05.20","双子座:05.21—06.20","巨蟹座:06.21—07.21","狮子座:07.22—08.22",            "处女座:08.23—09.22","天秤座:09.23—10.22","天蝎座:10.23—11.21","射手座:11.22—12.21"    };    final static String[] yi_string = new String[]{            "出行.上任.会友.上书.见工","除服.疗病.出行.拆卸.入宅",            "祈福.祭祀.结亲.开市.交易","祭祀.修填.涂泥.余事勿取",            "交易.立券.会友.签约.纳畜","祈福.祭祀.求子.结婚.立约",            "求医.赴考.祭祀.余事勿取","经营.交易.求官.纳畜.动土",            "祈福.入学.开市.求医.成服","祭祀.求财.签约.嫁娶.订盟",            "疗病.结婚.交易.入仓.求职","祭祀.交易.收财.安葬"    };    final static String[] ji_string = new String[]{            "动土.开仓.嫁娶.纳采","求官.上任.开张.搬家.探病",            "服药.求医.栽种.动土.迁移","移徙.入宅.嫁娶.开市.安葬",            "种植.置业.卖田.掘井.造船","开市.交易.搬家.远行",            "动土.出行.移徙.开市.修造","登高.行船.安床.入宅.博彩",            "词讼.安门.移徙","开市.安床.安葬.入宅.破土",            "安葬.动土.针灸","宴会.安床.出行.嫁娶.移徙"    };    final static String[][] jcName = new String[][]{            {
   "建","除","满","平","定","执","破","危","成","收","开","闭"},            {
   "闭","建","除","满","平","定","执","破","危","成","收","开"},            {
   "开","闭","建","除","满","平","定","执","破","危","成","收"},            {
   "收","开","闭","建","除","满","平","定","执","破","危","成"},            {
   "成","收","开","闭","建","除","满","平","定","执","破","危"},            {
   "危","成","收","开","闭","建","除","满","平","定","执","破"},            {
   "破","危","成","收","开","闭","建","除","满","平","定","执"},            {
   "执","破","危","成","收","开","闭","建","除","满","平","定"},            {
   "定","执","破","危","成","收","开","闭","建","除","满","平"},            {
   "平","定","执","破","危","成","收","开","闭","建","除","满"},            {
   "满","平","定","执","破","危","成","收","开","闭","建","除"},            {
   "除","满","平","定","执","破","危","成","收","开","闭","建"}    };    final static String[] Gan = new String[] { "甲", "乙", "丙", "丁", "戊", "己", "庚",            "辛", "壬", "癸" };    final static String[] Zhi = new String[] { "子", "丑", "寅", "卯", "辰", "巳", "午",            "未", "申", "酉", "戌", "亥" };    // ====== 传回农历 y年的总天数 1900--2100    public 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    public  int leapDays(int y) {        if (leapMonth(y) != 0) {            if ((lunarInfo[y - 1899] & 0xf) != 0)                return 30;            else                return 29;        } else            return 0;    }    // ====== 传回农历 y年闰哪个月 1-12 , 没闰传回 0    public  int leapMonth(int y) {        long var = lunarInfo[y - 1900] & 0xf;        return (int)(var == 0xf ? 0 : var);    }    // ====== 传回农历 y年m月的总天数    public int monthDays(int y, int m) {        if ((lunarInfo[y - 1900] & (0x10000 >> m)) == 0)            return 29;        else            return 30;    }    // ====== 传回农历 y年的生肖    public String animalsYear(int year) {        final String[] Animals = new String[] { "鼠", "牛", "虎", "兔", "龙", "蛇",                "马", "羊", "猴", "鸡", "狗", "猪" };        return Animals[(year - 4) % 12]+"年";    }    // ====== 传入 月日的offset 传回干支, 0=甲子    final private static String cyclicalm(int num) {        return (Gan[num % 10] + Zhi[num % 12]);    }    // ====== 传入 offset 传回干支, 0=甲子    final public String cyclical(int year, int month,int day) {        int num = year - 1900 + 36;        //立春日期        int term2 = sTerm(year, 2);        if(month>2 || (month==2 && day>= term2)){            num = num + 0;        }else{            num = num -1;        }        return (cyclicalm(num));    }    public static String getChinaDayString(int day) {
   //将农历day日格式化成农历表示的字符串        String chineseTen[] = { "初", "十", "廿", "卅" };        String chineseDay[] = { "一", "二", "三", "四", "五", "六", "七",                "八", "九", "十"};        String var="";        if(day!=20 && day != 30){            var = chineseTen[(int)((day-1)/10)]+ chineseDay[(int)((day-1)%10)];        }else if(day !=20){            var = chineseTen[(int)(day/10)]+"十";        }else{            var = "二十";        }        return var;    }    /*     * 计算公历nY年nM月nD日和bY年bM月bD日渐相差多少天     * */    public int getDaysOfTwoDate(int bY,int bM, int bD,int nY, int nM,int nD){        Date baseDate = null;        Date nowaday = null;        try {            baseDate = chineseDateFormat.parse(bY+"年"+bM+"月"+bD+"日");            nowaday = chineseDateFormat.parse(nY+"年"+nM+"月"+nD+"日");        } catch (ParseException e) {            e.printStackTrace();        }        // 求出相差的天数        int offset = (int) ((nowaday.getTime() - baseDate.getTime()) / 86400000L);        return offset;    }    /*农历lunYear年lunMonth月lunDay日     * isLeap 当前年月是否是闰月     * 从农历日期转换成公历日期     * */    public Calendar getSunDate(int lunYear, int lunMonth, int lunDay, boolean isLeap){        //公历1900年1月31日为1900年正月初一        int years = lunYear -1900;        int days=0;        for(int i=0;i
    
     leapMonth(lunYear)){            days += leapDays(lunYear);//lunYear年闰月天数        }        if(isLeap){            days +=monthDays(lunYear,lunMonth);//lunYear年lunMonth月 闰月        }        days +=lunDay;        days = days-1;        Calendar cal=Calendar.getInstance();        cal.set(Calendar.YEAR, 1900);        cal.set(Calendar.MONTH, 0);        cal.set(Calendar.DAY_OF_MONTH,31);        cal.add(Calendar.DATE, days);        /*        Date date=cal.getTime();        int year_c = cal.get(Calendar.YEAR);        int month_c = cal.get(Calendar.MONTH)+1;        int day_c = cal.get(Calendar.DAY_OF_MONTH);        */        return cal;    }    public String getLunarString(int year, int month, int day){        int var = getLunarDateINT(year,month,day);        int lYear = (int)var/10000;        int lMonth = (int)(var%10000)/100;        int lDay = var - lYear*10000 - lMonth*100;        String lunY = cyclical(year,month,day)+"年";        String lunM="";        int testMonth = getSunDate(lYear,lMonth,lDay,false).get(Calendar.MONTH)+1;        if(testMonth!=month){            lunM = "闰";        }        lunM += chineseNumber[(lMonth-1)%12]+"月";        //int leap = leapMonth(lYear);        String lunD = getChinaDayString(lDay);        int animalsYear = 0;        int term2 = sTerm(year, 2);//立春        if(month>2 ||(month==2&& day>=term2)){            animalsYear = year;        }else{            animalsYear = year-1;        }        String Festival = getFestival(year,month,day);        //return lunY+"-"+lunM+"-"+lunD+"-"+animalsYear(animalsYear);        return "农历 "+lunM+lunD+" "+Festival;    }    /*     * 将公历year年month月day日转换成农历     * 返回格式为20140506（int）     * */    public int getLunarDateINT(int year, int month, int day){        int iYear,LYear,LMonth,LDay, daysOfYear = 0;        // 求出和1900年1月31日相差的天数        //year =1908;        //month = 3;        //day =3;        int offset = getDaysOfTwoDate(1900,1,31,year,month,day);        //Log.i("--ss--","公历:"+year+"-"+month+"-"+day+":"+offset);        // 用offset减去每农历年的天数        // 计算当天是农历第几天        // i最终结果是农历的年份        // offset是当年的第几天        for (iYear = 1900; iYear < 2100 && offset >0; iYear++) {            daysOfYear = yearDays(iYear);            offset -= daysOfYear;            //Log.i("--ss--","农历:"+iYear+":"+daysOfYear+"/"+offset);        }        if (offset < 0) {            offset += daysOfYear;            iYear--;            //Log.i("--ss--","农历:"+iYear+":"+daysOfYear+"/"+offset);        }        // 农历年份        LYear = iYear;        leapMonth = leapMonth(iYear); // 闰哪个月,1-12        leap = false;        // 用当年的天数offset,逐个减去每月（农历）的天数，求出当天是本月的第几天        int iMonth=1, daysOfMonth = 0;        for (iMonth = 1; iMonth < 13 && offset >0; iMonth++) {            // 闰月            if (leapMonth > 0 && iMonth == (leapMonth + 1) && !leap) {                --iMonth;                leap = true;                daysOfMonth = leapDays(iYear);            } else{                daysOfMonth = monthDays(iYear, iMonth);            }            // 解除闰月            if (leap && iMonth == (leapMonth + 1)) leap = false;            offset -= daysOfMonth;            //Log.i("--ss--","农历:"+iYear+"-"+iMonth+":"+daysOfMonth+"/"+offset);        }        // offset为0时，并且刚才计算的月份是闰月，要校正        if (offset == 0 && leapMonth > 0 && iMonth == leapMonth + 1) {            if (leap) {                leap = false;            } else {                leap = true;                --iMonth;            }        }        // offset小于0时，也要校正        if (offset < 0) {            offset += daysOfMonth;            --iMonth;            //Log.i("--ss--","农历:"+iYear+"-"+iMonth+":"+daysOfMonth+"/"+offset);        }        LMonth = iMonth;        LDay = offset + 1;        //Log.i("--ss--","农历:"+LYear+"-"+LMonth+"-"+LDay);        return LYear * 10000 + LMonth *100 + LDay;    }    public String getFestival(int year, int month, int day){
   //获取公历对应的节假日或二十四节气        //农历节假日        int var = getLunarDateINT(year, month, day);        int lun_year = (int)var/10000;        int lun_month = (int)(var%10000)/100;        int lun_Day = (int)(var - lun_year*10000 - lun_month*100);        for (int i = 0; i < lunarHoliday.length; i++) {            // 返回农历节假日名称            String ld = lunarHoliday[i].split(" ")[0]; // 节假日的日期            String ldv = lunarHoliday[i].split(" ")[1]; // 节假日的名称            String lmonth_v = lun_month + "";            String lday_v = lun_Day + "";            String lmd = "";            if (month < 10) {                lmonth_v = "0" + lun_month;            }            if (day < 10) {                lday_v = "0" + lun_Day;            }            lmd = lmonth_v + lday_v;            if (ld.trim().equals(lmd.trim())) {                return ldv;            }        }        //公历节假日        for (int i = 0; i < solarHoliday.length; i++) {            if(i==solarHoliday.length && year<1893 //1893年前没有此节日                    || i+3 == solarHoliday.length && year<1999                    || i+6 == solarHoliday.length && year<1942                    || i+10 == solarHoliday.length && year<1949                    || i == 19 && year<1921                    || i == 20 && year<1933                    || i == 22 && year<1976){                break;            }            // 返回公历节假日名称            String sd = solarHoliday[i].split(" ")[0]; // 节假日的日期            String sdv = solarHoliday[i].split(" ")[1]; // 节假日的名称            String smonth_v = month + "";            String sday_v = day + "";            String smd = "";            if (month < 10) {                smonth_v = "0" + month;            }            if (day < 10) {                sday_v = "0" + day;            }            smd = smonth_v + sday_v;            if (sd.trim().equals(smd.trim())) {                return sdv;            }        }        int b = getDateOfSolarTerms(year,month);        if(day==(int)b/100){            return sTermInfo[(month-1)*2];        }else if(day== b%100){            return sTermInfo[(month-1)*2+1];        }        return "";    }    /** */    /**     * 传出y年m月d日对应的农历. yearCyl3:农历年与1864的相差数 ? monCyl4:从1900年1月31日以来,闰月数     * dayCyl5:与1900年1月31日相差的天数,再加40 ?     *     * isday: 这个参数为false---日期为节假日时，阴历日期就返回节假日 ，true---不管日期是否为节假日依然返回这天对应的阴历日期     *     * @return     */    public String getLunarDate(int year_log, int month_log, int day_log,                               boolean isday) {        int var = getLunarDateINT(year_log,month_log,day_log);        // 农历年份        year = (int)var/10000;        setYear(year); // 设置公历对应的农历年份        //农历月份        month = (int)Math.ceil((var%10000)/100);        setLunarMonth(chineseNumber[(month-1)%12] + "月"); // 设置对应的阴历月份        day = var - year*10000 - month*100;        if (!isday) {            String Festival = getFestival(year_log,month_log,day_log);            if(Festival.length()>1){                return Festival;            }        }        if (day == 1)            return chineseNumber[(month-1)%12] + "月";        else            return getChinaDayString(day);    }    public String toString() {        if (chineseNumber[(month-1)%12] == "正" && getChinaDayString(day) == "初一")            return "农历" + year + "年";        else if (getChinaDayString(day) == "初一")            return chineseNumber[(month-1)%12] + "月";        else            return getChinaDayString(day);        // return year + "年" + (leap ? "闰" : "") + chineseNumber[month - 1] +        // "月" + getChinaDayString(day);    }    /*     * public static void main(String[] args) { System.out.println(new     * LunarCalendar().getLunarDate(2012, 1, 23)); }     */    public int getLeapMonth() {        return leapMonth;    }    public void setLeapMonth(int leapMonth) {        this.leapMonth = leapMonth;    }    /**     * 得到当前日期对应的阴历月份     *     * @return     */    public String getLunarMonth() {        return lunarMonth;    }    public void setLunarMonth(String lunarMonth) {        this.lunarMonth = lunarMonth;    }    /**     * 得到当前年对应的农历年份     *     * @return     */    public int getYear() {        return year;    }    public void setYear(int year) {        this.year = year;    }    public String getConstellation(int month, int day){
   //计算星座        int date = month*100 + day;        String constellation="";        if(date>=120 && date <=218){            constellation = constellations[1];        }else if(date>=219 && date<=320){            constellation = constellations[2];        }else if(date>=321 && date<=419){            constellation = constellations[3];        }else if(date>=420 && date<=520){            constellation = constellations[4];        }else if(date>=521 && date<=620){            constellation = constellations[5];        }else if(date>=621 && date<=721){            constellation = constellations[6];        }else if(date>=722 && date<=822){            constellation = constellations[7];        }else if(date>=823 && date<=922){            constellation = constellations[8];        }else if(date>=923 && date<=1022){            constellation = constellations[9];        }else if(date>=1023 && date<=1121){            constellation = constellations[10];        }else if(date>=1122 && date<=1221){            constellation = constellations[11];        }else{            constellation = constellations[0];        }        return constellation;    }    private int sTerm(int y, int n) {        int[]  sTermInfo = new int[]{
   0,21208,42467,63836,85337,107014,                128867,150921,173149,195551,218072,240693,                263343,285989,308563,331033,353350,375494,                397447,419210,440795,462224,483532,504758};        Calendar cal = Calendar.getInstance();        cal.set(1900, 0, 6, 2, 5, 0);        long temp = cal.getTime().getTime();        cal.setTime(new Date( (long) ((31556925974.7 * (y - 1900) + sTermInfo[n] * 60000L) + temp)));        int a=cal.get(Calendar.DAY_OF_MONTH);        return a;    }    public int getDateOfSolarTerms(int year, int month){        int a = sTerm(year,(month-1)*2);        int b = sTerm(year,(month-1)*2 +1);        return a*100+b;        //return 0;    }    public String jcrt(String d) {        String jcrjxt="";        String yj0 = "宜:\t",yj1 = "忌:\t",br = "-";        //String yj0 = "",yj1 = "",br = "-";        if (d == "建") jcrjxt = yj0 + yi_string[0] + br + yj1 + ji_string[0];        if (d == "除") jcrjxt = yj0 + yi_string[1] + br + yj1 + ji_string[1];        if (d == "满") jcrjxt = yj0 + yi_string[2] + br + yj1 + ji_string[2];        if (d == "平") jcrjxt = yj0 + yi_string[3] + br + yj1 + ji_string[3];        if (d == "定") jcrjxt = yj0 + yi_string[4] + br + yj1 + ji_string[4];        if (d == "执") jcrjxt = yj0 + yi_string[5] + br + yj1 + ji_string[5];        if (d == "破") jcrjxt = yj0 + yi_string[6] + br + yj1 + ji_string[6];        if (d == "危") jcrjxt = yj0 + yi_string[7] + br + yj1 + ji_string[7];        if (d == "成") jcrjxt = yj0 + yi_string[8] + br + yj1 + ji_string[8];        if (d == "收") jcrjxt = yj0 + yi_string[9] + br + yj1 + ji_string[9];        if (d == "开") jcrjxt = yj0 + yi_string[10] + br + yj1 + ji_string[10];        if (d == "闭") jcrjxt = yj0 + yi_string[11] + br + yj1 + ji_string[11];        return jcrjxt;    }    /* num_y%12, num_m%12, num_d%12, num_y%10, num_d%10     * m:农历月份 1---12     * dt：农历日     * */    public String CalConv2(int yy, int mm, int dd, int y, int d, int m, int dt) {        String dy = d + "" + dd;        if ((yy == 0 && dd == 6) || (yy == 6 && dd == 0) || (yy == 1 && dd == 7) ||                (yy == 7 && dd == 1) || (yy == 2 && dd == 8) || (yy == 8 && dd == 2) ||                (yy == 3 && dd == 9) || (yy == 9 && dd == 3) || (yy == 4 && dd == 10) ||                (yy == 10 && dd == 4) || (yy == 5 && dd == 11) || (yy == 11 && dd == 5)) {            /*             * 地支共有六对相冲，俗称“六冲”，即：子午相冲、丑未相冲、寅申相冲、卯酉相冲、辰戌相冲、巳亥相冲。             * 如当年是甲子年，子为太岁，与子相冲者是午，假如当日是午日，则为岁破，其余的以此类推，即丑年的岁破为未日，             * 寅年的岁破为申日，卯年的岁破为酉日，辰年的岁破为戌日，巳年的岁破为亥日，午年的岁破为子日，未年的岁破为丑日，             * 申年的岁破为寅日，酉年的岁破为卯日，戌年的岁破为辰日，亥年的岁破为巳日。             * */            return "日值岁破 大事不宜";        }        else if ((mm == 0 && dd == 6) || (mm == 6 && dd == 0) || (mm == 1 && dd == 7) || (mm == 7 && dd == 1) ||                (mm == 2 && dd == 8) || (mm == 8 && dd == 2) || (mm == 3 && dd == 9) || (mm == 9 && dd == 3) ||                (mm == 4 && dd == 10) || (mm == 10 && dd == 4) || (mm == 5 && dd == 11) || (mm == 11 && dd == 5)) {            return "日值月破 大事不宜";        }        else if ((y == 0 && dy == "911") || (y == 1 && dy == "55") || (y == 2 && dy == "111") ||                (y == 3 && dy == "75") || (y == 4 && dy == "311") || (y == 5 && dy == "95") ||                (y == 6 && dy == "511")|| (y == 7 && dy == "15") || (y == 8 && dy == "711") || (y == 9 && dy == "35")) {            return "日值上朔 大事不宜";        }        else if ((m == 1 && dt == 13) || (m == 2 && dt == 11) || (m == 3 && dt == 9) || (m == 4 && dt == 7) ||                (m == 5 && dt == 5) || (m == 6 && dt == 3) || (m == 7 && dt == 1) || (m == 7 && dt == 29) ||                (m == 8 && dt == 27) || (m == 9 && dt == 25) || (m == 10 && dt == 23) || (m == 11 && dt == 21) ||                (m == 12 && dt == 19)) {            /*             * 杨公十三忌   以农历正月十三日始，以后每月提前两天为百事禁忌日             * */            return "日值杨公十三忌 大事不宜";            //}else if(var == getSiLi(m,dt)){
                //return "日值四离  大事勿用";        }        else {            return null;        }    }    public int getDaysOfMonth(int year, int month){
   //返回公历year年month月的当月总天数        if(month == 2){            return(((year%4 == 0) && (year%100 != 0) || (year%400 == 0))? 29: 28);        }else if(month == 1 || month == 3 ||month == 5 || month == 7 || month == 8 ||month == 10 || month == 12){            return 31;        }        return 30;    }    /*输入     * year 公历年份，大于1900     * month 公历月份 1--12     * 输出     * ArrayList
     
       year年month月全月宜忌     * */    public  ArrayList
      
        getyiji(int year, int month) {        int num_y = -1;        int num_m = (year - 1900) * 12 + month-1 +12;        int num_d;        int mLMonth=1,mLDay=1,mLun_x=0;        int days_of_month = getDaysOfMonth(year, month);        ArrayList
       
         yiji = new ArrayList
        
         ();        //年柱 1900年立春后为庚子年(60进制36)        //cyclical(year,month);        //立春日期        int term2 = sTerm(year, 2);        //月柱  1900年1月小寒以前为 丙子月(60进制12)        int firstNode = sTerm(year, (month-1)*2);//当月的24节气中的节开始日        //cyclicalm(num_m);        //Calendar cal = Calendar.getInstance();        //cal.set(year, month, 1, 0, 0, 0);        //1900/1/1与 1970/1/1 相差25567日, 1900/1/1 日柱为甲戌日(60进制10)        int dayCyclical = (int) (getDaysOfTwoDate(1900,1,1,year,month,1)+10);        for(int i=0;i
         
           mLun_x){ //Log.i("","mLDay > mLun_x "+mLDay+":"+mLun_x); int var = getLunarDateINT(year,month,i+1); int mLYear =(int)var/10000; mLMonth = (int)(var%10000)/100; mLDay = (int)(var - mLYear*10000 - mLMonth*100); mLun_x = (leapMonth(mLYear)!=0)?leapDays(mLYear):monthDays(mLYear, mLMonth); //Log.i("","mLDay > mLun_x ?"+mLDay+":"+mLun_x); } //依节气调整二月分的年柱, 以立春为界 if(month==2 && (i+1)==term2){ //cY = cyclicalm(year-1900 + 36); num_y = year - 1900 + 36; } //依节气 调整月柱, 以「节」为界 if((i+1)==firstNode) { num_m =(year - 1900) * 12 + month +12 ; //cM = cyclicalm(num_m); } //日柱 //cD = cyclicalm(dayCyclical + i); num_d = dayCyclical +i; mLDay++; //Log.i("","---num_y:"+num_y+","+num_m+","+num_d+",n_m:"+mLMonth+",n_d:"+mLDay+",mLun_x:"+mLun_x); String str = CalConv2(num_y%12, num_m%12, num_d%12, num_y%10, num_d%10, mLMonth, mLDay-1); if(str == null){ String var = jcName[num_m%12][num_d%12]; str = jcrt(var); //Log.i("","---"+month+"-"+(i+1)+","+var+":"+str); } //Log.i("","---"+year+"-"+month+"-"+(i+1)+","+str); yiji.add(str); } return yiji; } /* * 公历某日宜忌 * */ public String getyiji(int year, int month, int day) { int num_y = -1; int num_m = (year - 1900) * 12 + month-1 +12; int num_d; int mLMonth=1,mLDay=1; int days_of_month = getDaysOfMonth(year, month); if(day > days_of_month) day = days_of_month; //年柱 1900年立春后为庚子年(60进制36) //cyclical(year,month); //立春日期 int term2 = sTerm(year, 2); int firstNode = sTerm(year, (month-1)*2);//当月的24节气中的节开始日 int dayCyclical = (int) (getDaysOfTwoDate(1900,1,1,year,month,1)+10); if(month==2 && day==term2){ //cY = cyclicalm(year-1900 + 36);//依节气调整二月分的年柱, 以立春为界 num_y = year - 1900 + 36; } if(day==firstNode) { num_m =(year - 1900) * 12 + month +12 ;//依节气 调整月柱, 以「节」为界 //cM = cyclicalm(num_m); } num_d = dayCyclical +day -1; int var = getLunarDateINT(year,month,day); int mLYear =(int)var/10000; mLMonth = (int)(var%10000)/100; mLDay = (int)(var - mLYear*10000 - mLMonth*100); //Log.i("","---num_y:"+num_y+","+num_m+","+num_d+",n_m:"+mLMonth+",n_d:"+mLDay+",mLun_x:"+mLun_x); String str = CalConv2(num_y%12, num_m%12, num_d%12, num_y%10, num_d%10, mLMonth, mLDay); if(str == null){ str = jcrt(jcName[num_m%12][num_d%12]); //Log.i("","---"+month+"-"+(i+1)+","+var+":"+str); } //Log.i("","---"+year+"-"+month+"-"+(i+1)+","+str); return str; } /* * 计算距离1900年12月31日days天后的日期 * */ public int getDateFromBaseDate(int days){ int year = 0,month = 0,day = 0; Calendar cal=Calendar.getInstance(); cal.set(Calendar.YEAR, 1900); cal.set(Calendar.MONTH, 0); cal.set(Calendar.DAY_OF_MONTH,31); cal.add(Calendar.DATE, days); year = cal.get(Calendar.YEAR); month = cal.get(Calendar.MONTH)+1; day = cal.get(Calendar.DAY_OF_MONTH); return 10000*year+100*month+day; }}复制代码

在getLunarDate方法中我修改了一下，原来的月份计算有点问题，没有向上取整month = (int)Math.ceil((var%10000)/100);这是我修改的。

请注意，在调用的时候

myHolder.tv2.text = LunarCalendar().getLunarDate(c.get(Calendar.YEAR),c.get(Calendar.MONTH)+1,c.get(Calendar.DAY_OF_MONTH),false)复制代码

月份加了1。Calendar的月份是从0开始的。

然后说说点击选中效果：

点击的时候

myHolder.ll_tv.setOnClickListener {        context as ScheduleActivity        c.set(Calendar.DATE, position + 1 - emptyCount)        modelHolder.get
    
     
      >().value!!.obj = entity_null_obj(dateString)        modelHolder.callUpdate()        }复制代码

我把点击的日期放在了modelHolder中，然后通知modelHolder刷新，modelHolder就会在外部刷新adapter，然后modelHolder.get>().value?.obj?.s就是我们点击的日期，就被带到adapter里面了。

//选中if(modelHolder.get
    
     
      >().value?.obj?.s != null                    &&modelHolder.get
      
       
        >().value!!.obj.s == dateString){        myHolder.ll_tv.backgroundDrawable = context.resources.getDrawable(R.drawable.red_circle2)        myHolder.tv.setTextColor(context.resources.getColor(R.color.white))        myHolder.tv2.setTextColor(context.resources.getColor(R.color.white))}复制代码

这里就是显示被选中的式样。这样处理在切换月份后，选中日期不会丢失，在切换回之前的月份后，选中的日期还是选中的式样。

选中日期的事件处理，比如请求网络数据，我写在了modelHolder刷新Adapter的时候，在那里modelHolder会收到选中的日期。

modelHolder.get
    
     
      >().observe(this, android.arch.lifecycle.Observer {           //收到事件，进行处理})复制代码

点击月份的前后箭头，可以切换月份

before_bt.setOnClickListener {        c?.add(Calendar.MONTH, -1)        date_text.text = sdf.format(c?.time)        loadData()        }next_bt.setOnClickListener {        c?.add(Calendar.MONTH, 1)        date_text.text = sdf.format(c?.time)        loadData()        }复制代码

切换月份后，重新加载adapter即可。

最后，附赠一个收起控件的操作，手指按住下面的那两条横线，向上移动，控件会跟随手指移动，最终关闭。

ll_toggle.setOnClickListener { ll_show_date.visibility = View.GONE }        ll_toggle.setOnTouchListener { view, event ->            if (event.action == MotionEvent.ACTION_DOWN && downY == 0f) {                downY = (ll_show_date.parent as ViewGroup).y            }            if (event.action == MotionEvent.ACTION_MOVE) {                if (-ll_show_date.height + event.rawY > downY || event.rawY <= downY) {                    //限制滑动范围                    true                } else {                    (ll_show_date.parent as ViewGroup).y = -ll_show_date.height + event.rawY                    //移动过程中，隐藏下面的列表                    list.visibility = View.INVISIBLE                }            }            if (event.action == MotionEvent.ACTION_UP) {                if (-ll_show_date.height + event.rawY < downY) {                    (ll_show_date.parent as ViewGroup).y = downY                    ll_show_date.visibility = View.GONE                }                //移动完了，显示列表                list.visibility = View.VISIBLE            }            false        }复制代码

这部分代码没什么营养，就是根据手指坐标，修改控件的坐标。

最后的最后，ModelHolder是Livedata中的ViewModel。