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仿快捷酒店滑动选择calendar控件（使用HitRect）

作者：淑敏小朋友 | 来源：互联网 | 2023-09-02 13:32

声明：大神勿喷！！今天我给大家讲个故事： longlongago…山里有个公司，公司里有个产品经理在给程序员讲需求，需求是这样讲的：我要一个仿制快捷酒店的Calendar

声明：大神勿喷！！

今天我给大家讲个故事：

long long ago&＃8230;山里有个公司，公司里有个产品经理在给程序员讲需求，需求是这样讲的：我要一个仿制快捷酒店的Calendar控件！！！（UI设计师在旁边阴暗的冷笑）&＃8230;

好了言归正传，上一篇的的HitTest让我懂了一些基本的东西，在这里总结下：

HitTest：

在父View抓取当前touch的X，Y坐标（相对于父View）。然后与子View挨个比对，看看父View的触点是否在子View相对于父View的范围内。

这样我们就能轻松的解决一些下面的Calenadr;

上代码：

activity：

package com.example.clander; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.List; import android.app.Activity; import android.content.Intent; import android.content.SharedPreferences; import android.graphics.Color; import android.graphics.Typeface; import android.os.Bundle; import android.util.Log; import android.view.GestureDetector; import android.view.GestureDetector.OnGestureListener; import android.view.Menu; import android.view.MenuItem; import android.view.MotionEvent; import android.view.View; import android.view.View.OnClickListener; import android.view.View.OnTouchListener; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.GridView; import android.widget.LinearLayout; import android.widget.TextView; import android.widget.Toast; /** * 日历显示activity * * */ public class CalendarActivity extends Activity implements View.OnClickListener {//OnGestureListener, // private GestureDetector gestureDetector = null; private CalendarAdapter calV = null; private GridView gridView = null; private TextView topText = null; private static int jumpMOnth= 0; //每次滑动，增加或减去一个月,默认为0（即显示当前月） private static int jumpYear = 0; //滑动跨越一年，则增加或者减去一年,默认为0(即当前年) private int year_c = 0; private int month_c = 0; private int day_c = 0; private String currentDate = ""; private Bundle bd=null;//发送参数 private Bundle bun=null;//接收参数 private String ruzhuTime; private String lidianTime; private String state=""; private LinearLayout upPage,nextPage; private List selectedViews=new ArrayList(); private boolean isPress=false; private CalendarItemEntity inEntity,outEntity; public CalendarActivity() { Date date = new Date(); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-M-d"); currentDate = sdf.format(date); //当期日期 year_c = Integer.parseInt(currentDate.split("-")[0]); month_c = Integer.parseInt(currentDate.split("-")[1]); day_c = Integer.parseInt(currentDate.split("-")[2]); } private int lastTouchIndex=-1; private int currentPosition=-1;//当前手指悬停点 private int downPositin=-1;//按下时候的点 @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.calendar); bd=new Bundle();//out bun=getIntent().getExtras();//in if(bun!=null&&bun.getString("state").equals("ruzhu")) { state=bun.getString("state"); }else if(bun!=null&&bun.getString("state").equals("lidian")){ state=bun.getString("state"); } calV = new CalendarAdapter(this,getResources(),jumpMonth,jumpYear,year_c,month_c,day_c); addGridView(); gridView.setAdapter(calV); topText = (TextView) findViewById(R.id.tv_month); addTextToTopTextView(topText); gridView.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View arg0, MotionEvent event) { int touchIndex = gridView.pointToPosition((int) event.getX(), (int) event.getY()); View childView = gridView.getChildAt(touchIndex); switch(event.getAction()){ case MotionEvent.ACTION_DOWN: lastTouchIndex=touchIndex;//初始化lastTouch isPress=true; if(selectedViews.size()!=0) selectedViews.clear(); clearAllBg(); if (null != childView){ CalendarItemEntity entity=(CalendarItemEntity) childView.getTag(); if(entity.isCheck()) downPositin=touchIndex; } case MotionEvent.ACTION_MOVE: if (null != childView){ // Log.i("texts","curr---"+currentPosition+"-----"+downPositin); currentPosition=touchIndex; CalendarItemEntity entity=(CalendarItemEntity)childView.getTag(); if(entity.isCheck()){ if(downPositin==-1) downPositin=touchIndex; currentPosition=touchIndex; Log.i("texts","curr---"+currentPosition+"-----"+downPositin); measureSelected(); lastTouchIndex=touchIndex; } } break; case MotionEvent.ACTION_UP: if(selectedViews.size()==1){ if(currentPosition>=gridView.getChildCount()-1){ addGridView(); //添加一个gridView jumpMonth++; //下一个月 calV = new CalendarAdapter(CalendarActivity.this,getResources(),jumpMonth,jumpYear,year_c,month_c,day_c); gridView.setAdapter(calV); addTextToTopTextView(topText); }else if(downPositin!=-1){ setSelectedView(gridView.getChildAt(downPositin+1)); inEntity=(CalendarItemEntity) gridView.getChildAt(downPositin).getTag(); outEntity=(CalendarItemEntity) gridView.getChildAt(downPositin+1).getTag(); } } isPress=false; downPositin=-1; Log.i("texts", ""+selectedViews.size()); Toast.makeText(CalendarActivity.this,"当前选中："+inEntity.getYear()+inEntity.getMonth()+inEntity.getCurrentDay()+"::"+ outEntity.getYear()+outEntity.getMonth()+outEntity.getCurrentDay(), Toast.LENGTH_SHORT).show(); break; default: break; } return true; } }); upPage=(LinearLayout) this.findViewById(R.id.btn_prev_month); nextPage=(LinearLayout) this.findViewById(R.id.btn_next_month); upPage.setOnClickListener(this); nextPage.setOnClickListener(this); } private void cheekViewToAdd(View childView){ boolean isHas=false; for (View v : selectedViews) { if(v==childView) isHas=true; } if (!isHas) { selectedViews.add(childView); } } private void setSelectedView(View childView){//让条目选中 ((TextView)((LinearLayout)childView).getChildAt(0)).setBackgroundResource(R.drawable.current_day_bgc); ((TextView)((LinearLayout)childView).getChildAt(0)).setTextColor(Color.WHITE); cheekViewToAdd(childView); } private void clearAllBg(){//清理所有背景 int childcount=gridView.getChildCount(); for (int i=0;i LinearLayout child=(LinearLayout)gridView.getChildAt(i); CalendarItemEntity entity=(CalendarItemEntity) child.getTag(); if(!entity.isCheck()){ TextView textView=(TextView) child.getChildAt(0); textView.setBackgroundResource(R.drawable.triangle05); textView.setTextColor(Color.GRAY); continue; } TextView textView=(TextView) child.getChildAt(0); textView.setBackgroundResource(R.drawable.triangle05); textView.setTextColor(Color.BLACK); } } private void measureSelected(){ clearAllBg(); selectedViews.clear(); if(currentPosition>downPositin){//如果向右滑动 for (int i = 0; i <=currentPosition-downPositin; i++) { if(selectedViews.size()<6){ setSelectedView(gridView.getChildAt(downPositin+i)); outEntity=(CalendarItemEntity) gridView.getChildAt(downPositin+i).getTag(); } else if(Math.abs(currentPosition-downPositin)<6){ setSelectedView(gridView.getChildAt(downPositin+i)); outEntity=(CalendarItemEntity) gridView.getChildAt(downPositin+i).getTag(); } else if(currentPosition-downPositin>=6){ if(i<6){ setSelectedView(gridView.getChildAt(downPositin+i)); outEntity=(CalendarItemEntity) gridView.getChildAt(downPositin+i).getTag(); } } } }else if(currentPosition for(int i=0;i<=downPositin-currentPosition;i++){ if(selectedViews.size()<6) setSelectedView(gridView.getChildAt(downPositin-i)); else if(Math.abs(downPositin-currentPosition)<6) setSelectedView(gridView.getChildAt(downPositin-i)); else if(downPositin-currentPosition>=6){ if(i<6) setSelectedView(gridView.getChildAt(downPositin-i)); } Log.i("texts", "ttttt::::"+currentPosition+"---"+downPositin); } }else{ setSelectedView(gridView.getChildAt(currentPosition)); } } //添加头部的年份闰哪月等信息 public void addTextToTopTextView(TextView view){ StringBuffer textDate = new StringBuffer(); textDate.append(calV.getShowYear()).append("年").append( calV.getShowMonth()).append("月").append("\t"); view.setText(textDate); view.setTextColor(Color.WHITE); view.setTypeface(Typeface.DEFAULT_BOLD); } //添加gridview private void addGridView() { gridView =(GridView)findViewById(R.id.gridview); // gridView.setOnTouchListener(new OnTouchListener() { // //将gridview中的触摸事件回传给gestureDetector // @Override // public boolean onTouch(View v, MotionEvent event) { // // TODO Auto-generated method stub // return CalendarActivity.this.gestureDetector.onTouchEvent(event); // } // }); gridView.setOnItemClickListener(new OnItemClickListener() { //gridView中的每一个item的点击事件 @Override public void onItemClick(AdapterView arg0, View arg1, int position, long arg3) { //点击任何一个item，得到这个item的日期(排除点击的是周日到周六(点击不响应)) int startPosition = calV.getStartPositon(); int endPosition = calV.getEndPosition(); if(startPosition <= position+7 && position <= endPosition-7){ String scheduleDay = calV.getDateByClickItem(position).split("\\.")[0]; //这一天的阳历 //String scheduleLunarDay = calV.getDateByClickItem(position).split("\\.")[1]; //这一天的阴历 String scheduleYear = calV.getShowYear(); String scheduleMOnth= calV.getShowMonth(); // Toast.makeText(CalendarActivity.this, scheduleYear+"-"+scheduleMonth+"-"+scheduleDay, 2000).show(); ruzhuTime=scheduleMonth+"月"+scheduleDay+"日"; lidianTime=scheduleMonth+"月"+scheduleDay+"日"; Intent intent=new Intent(); if(state.equals("ruzhu")) { bd.putString("ruzhu", ruzhuTime); System.out.println("ruzhuuuuuu"+bd.getString("ruzhu")); }else if(state.equals("lidian")){ bd.putString("lidian", lidianTime); } } } }); } @Override public void onClick(View v) { switch(v.getId()){ case R.id.btn_prev_month://上一页 addGridView(); //添加一个gridView jumpMonth--; //上一个月 calV = new CalendarAdapter(this,getResources(),jumpMonth,jumpYear,year_c,month_c,day_c); gridView.setAdapter(calV); downPositin=-1; addTextToTopTextView(topText); break; case R.id.btn_next_month://下一页 addGridView(); //添加一个gridView jumpMonth++; //下一个月 calV = new CalendarAdapter(this,getResources(),jumpMonth,jumpYear,year_c,month_c,day_c); gridView.setAdapter(calV); addTextToTopTextView(topText); downPositin=-1; break; default: break; } } }

acitvity的XML文件：

android:layout_ android:layout_ android:orientation="vertical" > android:layout_ android:layout_ android:background="#ff394147" android:gravity="center_vertical" > android:id="@+id/btn_prev_month" android:layout_ android:layout_ android:layout_weight="0.2" android:gravity="center" android:clickable="true" android:orientation="vertical" > android:id="@+id/left_img" android:layout_ android:layout_ android:background="@drawable/triangle06_states" android:duplicateParentState="true" android:text="" android:textSize="16.0dip" /> android:layout_ android:layout_ android:layout_weight="0.6" android:gravity="center" android:orientation="vertical" > android:id="@+id/tv_month" android:layout_ android:layout_ android:gravity="center" android:text="xxxx年14月" android:textColor="#ffffffff" android:textSize="21.0dip" /> android:id="@+id/btn_next_month" android:layout_ android:layout_ android:layout_weight="0.2" android:gravity="center" android:clickable="true" android:orientation="vertical" > android:id="@+id/right_img" android:layout_ android:layout_ android:background="@drawable/triangle05_states" android:duplicateParentState="true" android:text="" android:textSize="16.0dip" /> android:layout_ android:layout_ android:background="#ff8091a8" > android:text="周日" /> android:text="周一" /> android:text="周二" /> android:text="周三" /> android:text="周四" /> android:text="周五" /> android:text="周六" /> android:id="@+id/gridview" android:layout_ android:layout_ android:background="#00000000" android:clickable="true" android:clipChildren="true" android:column android:horizOntalSpacing="1.0dip" android:listSelector="@null" android:numColumns="7" android:paddingBottom="1.0dip" android:stretchMode="columnWidth" android:verticalSpacing="1.0dip" />

item的layout文件：

xmlns:android="http://schemas.android.com/apk/res/android" android:background="#FFFFFF" android:layout_ android:layout_> android:gravity="center" android:layout_ android:layout_ android:id="@+id/tvtext" />

adapter适配器java文件：

package com.example.clander; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Calendar; import java.util.Date; import java.util.List; import java.util.Locale; import android.content.Context; import android.content.res.Resources; import android.graphics.Color; import android.graphics.drawable.Drawable; import android.text.SpannableString; import android.text.Spanned; import android.text.style.RelativeSizeSpan; import android.text.style.StyleSpan; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.TextView; /** * 日历gridview中的每一个item显示的textview * * @author lmw * */ public class CalendarAdapter extends BaseAdapter { public boolean isLeapyear = false; // 是否为闰年 public int daysOfMOnth= 0; // 某月的天数 public int dayOfWeek = 0; // 具体某一天是星期几 public int lastDaysOfMOnth= 0; // 上一个月的总天数 public Context context; public String[] dayNumber = new String[42]; // 一个gridview中的日期存入此数组中 // private static String week[] = {"周日","周一","周二","周三","周四","周五","周六"}; public SpecialCalendar sc = null; // private LunarCalendar lc = null; public Resources res = null; public Drawable drawable = null; public String currentYear = ""; public String currentMOnth= ""; public String currentDay = ""; public SimpleDateFormat sdf = new SimpleDateFormat("yyyy-M-d"); public int currentFlag = -1; // 用于标记当天 public int[] schDateTagFlag = null; // 存储当月所有的日程日期 public String showYear = ""; // 用于在头部显示的年份 public String showMOnth= ""; // 用于在头部显示的月份 public String animalsYear = ""; public String leapMOnth= ""; // 闰哪一个月 // public String cyclical = ""; //天干地支 // 系统当前时间 public String sysDate = ""; public String sys_year = ""; public String sys_mOnth= ""; public String sys_day = ""; private Calendar currCalendar; private int currDay; private int currMonth; private int currYear; private int selectedSize=90;//可选天数 private int wantYear; private int wantMonth; private int wantDay; private Calendar wantCalendar; public CalendarAdapter() { Date date = new Date(); sysDate = sdf.format(date); // 当期日期 sys_year = sysDate.split("-")[0]; sys_mOnth= sysDate.split("-")[1]; sys_day = sysDate.split("-")[2]; currCalendar = Calendar.getInstance(); currDay = currCalendar.get(Calendar.DAY_OF_MONTH); currMOnth= currCalendar.get(Calendar.MONTH) + 1; currYear = currCalendar.get(Calendar.YEAR); wantCalendar=(Calendar) currCalendar.clone(); wantCalendar.add(Calendar.DAY_OF_YEAR,selectedSize); wantYear=wantCalendar.get(Calendar.YEAR); wantMOnth=wantCalendar.get(Calendar.MONTH)+1; wantDay=wantCalendar.get(Calendar.DAY_OF_MONTH); } public CalendarAdapter(Context context, Resources rs, int jumpMonth, int jumpYear, int year_c, int month_c, int day_c) { this(); this.cOntext= context; sc = new SpecialCalendar(); // lc = new LunarCalendar(); this.res = rs; int stepYear = year_c + jumpYear; int stepMOnth= month_c + jumpMonth; if (stepMonth > 0) { // 往下一个月滑动 if (stepMonth % 12 == 0) { stepYear = year_c + stepMonth / 12 - 1; stepMOnth= 12; } else { stepYear = year_c + stepMonth / 12; stepMOnth= stepMonth % 12; } } else { // 往上一个月滑动 stepYear = year_c - 1 + stepMonth / 12; stepMOnth= stepMonth % 12 + 12; if (stepMonth % 12 == 0) { } } currentYear = String.valueOf(stepYear);// 得到当前的年份 currentMOnth= String.valueOf(stepMonth); // 得到本月 // （jumpMonth为滑动的次数，每滑动一次就增加一月或减一月） currentDay = String.valueOf(day_c); // 得到当前日期是哪天 getCalendar(Integer.parseInt(currentYear), Integer.parseInt(currentMonth)); } public CalendarAdapter(Context context, Resources rs, int year, int month, int day) { this(); this.cOntext= context; sc = new SpecialCalendar(); // lc = new LunarCalendar(); this.res = rs; currentYear = String.valueOf(year); // 得到跳转到的年份 currentMOnth= String.valueOf(month); // 得到跳转到的月份 currentDay = String.valueOf(day); // 得到跳转到的天 getCalendar(Integer.parseInt(currentYear), Integer.parseInt(currentMonth)); } @Override public int getCount() { return dayNumber.length; } @Override public Object getItem(int position) { return position; } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { CalendarItemEntity entity = new CalendarItemEntity();// 条目实体 if (cOnvertView== null) { cOnvertView= LayoutInflater.from(context).inflate( R.layout.calendar_item, null); } TextView textView = (TextView) convertView.findViewById(R.id.tvtext); String d = dayNumber[position].split("\\.")[0]; String dv = dayNumber[position].split("\\.")[1]; // SpannableString sp = new SpannableString(d+"\n"+dv); SpannableString sp = new SpannableString(d); sp.setSpan(new StyleSpan(android.graphics.Typeface.BOLD), 0, d.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); sp.setSpan(new RelativeSizeSpan(1.2f), 0, d.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); textView.setText(sp); textView.setTextColor(Color.GRAY); entity.setCheck(false); entity.setCurrentDay(Integer.parseInt("" + sp)); Calendar ca=(Calendar) currCalendar.clone(); ca.add(Calendar.DAY_OF_MONTH,-1); long ldv=Long.parseLong(dv); if(ca.getTimeInMillis()<=ldv&&ldv<=wantCalendar.getTimeInMillis()){ textView.setTextColor(Color.BLACK);// 当月字体设黑 drawable = res.getDrawable(R.drawable.current_day_bgc); entity.setCheck(true); } if(position if(cMOnth==1){ entity.setMonth(12); entity.setYear(cYear-1); }else{ entity.setMonth(cMonth-1); entity.setYear(cYear); } }else if (position = dayOfWeek) { entity.setMonth(cMonth); entity.setYear(cYear); }else if(position>=daysOfMonth+dayOfWeek){ if(cMOnth==12){ entity.setMonth(1); entity.setYear(cYear+1); }else{ entity.setMonth(cMonth+1); entity.setYear(cYear); } } if (schDateTagFlag != null && schDateTagFlag.length > 0) { for (int i = 0; i if (schDateTagFlag[i] == position) { // 设置日程标记背景 textView.setBackgroundResource(R.drawable.mark); } } } if (currentFlag == position) { // 设置当天的背景 drawable = res.getDrawable(R.drawable.current_day_bgc); textView.setBackgroundDrawable(drawable); textView.setText("今天"); textView.setTextColor(Color.WHITE); } if(currentFlag>0&¤tFlag+1==position){ drawable = res.getDrawable(R.drawable.current_day_bgc); textView.setBackgroundDrawable(drawable); textView.setText("明天"); textView.setTextColor(Color.WHITE); } convertView.setTag(entity); return convertView; } private int cMonth; private int cYear; // 得到某年的某月的天数且这月的第一天是星期几 public void getCalendar(int year, int month) { isLeapyear = sc.isLeapYear(year); // 是否为闰年 daysOfMOnth= sc.getDaysOfMonth(isLeapyear, month); // 某月的总天数 dayOfWeek = sc.getWeekdayOfMonth(year, month); // 某月第一天为星期几 lastDaysOfMOnth= sc.getDaysOfMonth(isLeapyear, month - 1); // 上一个月的总天数 Log.d("DAY", isLeapyear + " ====== " + daysOfMonth + " ============ " + dayOfWeek + " ========= " + lastDaysOfMonth); cMOnth= month; cYear = year; Calendar c = Calendar.getInstance(); c.setTime(new Date(currYear, currMonth, currDay)); c.set(currYear, currMonth - 1, currDay); System.out.println(currYear + "年 " + currMonth + "月 " + currDay + "日为星期:" + (c.get(Calendar.DAY_OF_WEEK) - 1)); cWeek = c.get(Calendar.DAY_OF_WEEK) - 1; getweek(year, month); } private int cWeek; // 将一个月中的每一天的值添加入数组dayNuber中 private void getweek(int year, int month) { int j = 1; int flag = 0; String lunarDay = ""; for (int i = 0; i Calendar c = Calendar.getInstance(); if (i int temp = lastDaysOfMonth - dayOfWeek + 1; // lunarDay = lc.getLunarDate(year, month-1, temp+i,false); c.set(year, month-2,temp+i); dayNumber[i] = (temp + i) + "." + c.getTimeInMillis(); } else if (i String day = String.valueOf(i - dayOfWeek + 1); // 得到的日期 // lunarDay = lc.getLunarDate(year, month, // i-dayOfWeek+1,false); c.set(year, month-1,Integer.parseInt(day)); dayNumber[i] = i - dayOfWeek + 1 + "." + c.getTimeInMillis(); // 对于当前月才去标记当前日期 if (sys_year.equals(String.valueOf(year)) && sys_month.equals(String.valueOf(month)) && sys_day.equals(day)) { // 标记当前日期 currentFlag = i; } setShowYear(String.valueOf(year)); setShowMonth(String.valueOf(month)); } else { // 下一个月 c.set(year, month,j); dayNumber[i] = j + "." + c.getTimeInMillis(); j++; } } // } currCalendar = Calendar.getInstance();// 重置当前时间的calendar String abc = ""; for (int i = 0; i abc = abc + dayNumber[i] + ":"; } Log.d("DAYNUMBER", abc); } public void matchScheduleDate(int year, int month, int day) { } /** * 点击每一个item时返回item中的日期 * * @param position * @return */ public String getDateByClickItem(int position) { return dayNumber[position]; } /** * 在点击gridView时，得到这个月中第一天的位置 * * @return */ public int getStartPositon() { return dayOfWeek + 7; } /** * 在点击gridView时，得到这个月中最后一天的位置 * * @return */ public int getEndPosition() { return (dayOfWeek + daysOfMonth + 7) - 1; } public String getShowYear() { return showYear; } public void setShowYear(String showYear) { this.showYear = showYear; } public String getShowMonth() { return showMonth; } public void setShowMonth(String showMonth) { this.showMOnth= showMonth; } public String getAnimalsYear() { return animalsYear; } public void setAnimalsYear(String animalsYear) { this.animalsYear = animalsYear; } public String getLeapMonth() { return leapMonth; } public void setLeapMonth(String leapMonth) { this.leapMOnth= leapMonth; } }

javaBean（实体类）：

package com.example.clander; import java.io.Serializable; public class CalendarItemEntity implements Serializable { /** * */ private static final long serialVersiOnUID= 7086289624407287042L; private boolean isCheck=false; private int currentDay=-1; private int year; private int month; public boolean isCheck() { return isCheck; } public void setCheck(boolean isCheck) { this.isCheck = isCheck; } public int getCurrentDay() { return currentDay; } public void setCurrentDay(int currentDay) { this.currentDay = currentDay; } public int getYear() { return year; } public void setYear(int year) { this.year = year; } public int getMonth() { return month; } public void setMonth(int month) { this.mOnth= month; } }

Calendar核心处理类：

package com.example.clander; import java.util.Calendar; public class SpecialCalendar { private int daysOfMOnth= 0; //某月的天数 private int dayOfWeek = 0; //具体某一天是星期几 // 判断是否为闰年 public 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; } //得到某月有多少天数 public 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几 public 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; } }