安卓日历

下面是这个类的源码

可以根据具体要求修改源码以适应需求（我的是可以多点击的）

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;


import android.content.Context;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Typeface;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;


/**
 * 日历控件 功能：获得点选的日期区间
 * 
 */
public class CalendarView extends View implements View.OnTouchListener {
private final static String TAG = "anCalendar";
private Date selectedStartDate;
private Date selectedEndDate;
private Date curDate; // 当前日历显示的月
private Date today; // 今天的日期文字显示红色
private Date downDate; // 手指按下状态时临时日期
private Date showFirstDate, showLastDate; // 日历显示的第一个日期和最后一个日期
private int downIndex; // 按下的格子索引
private Calendar calendar;
private Surface surface;
private int[] date = new int[42]; // 日历显示数字
private int curStartIndex, curEndIndex; // 当前显示的日历起始的索引
private Map map;
private String currentMoth;
// private boolean completed = false; // 为false表示只选择了开始日期，true表示结束日期也选择了
// 给控件设置监听事件
private OnItemClickListener onItemClickListener;


public CalendarView(Context context) {
super(context);
init();
}


public CalendarView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}


private void init() {
map = new HashMap<String, Date>();
onItemClickListener = new OnItemClickListener() {


@Override
public void OnItemClick(Date date) {


}
};


curDate = selectedStartDate = selectedEndDate = today = new Date();
calendar = Calendar.getInstance();
calendar.setTime(curDate);
currentMoth = "" + calendar.get(1) + calendar.get(2);
surface = new Surface();
surface.density = getResources().getDisplayMetrics().density;
setBackgroundColor(surface.bgColor);
setOnTouchListener(this);
}


@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
surface.width = getResources().getDisplayMetrics().widthPixels;
surface.height = (int) (getResources().getDisplayMetrics().heightPixels * 2 / 5);
// if (View.MeasureSpec.getMode(widthMeasureSpec) ==
// View.MeasureSpec.EXACTLY) {
// surface.width = View.MeasureSpec.getSize(widthMeasureSpec);
// }
// if (View.MeasureSpec.getMode(heightMeasureSpec) ==
// View.MeasureSpec.EXACTLY) {
// surface.height = View.MeasureSpec.getSize(heightMeasureSpec);
// }
widthMeasureSpec = View.MeasureSpec.makeMeasureSpec(surface.width,
View.MeasureSpec.EXACTLY);
heightMeasureSpec = View.MeasureSpec.makeMeasureSpec(surface.height,
View.MeasureSpec.EXACTLY);
setMeasuredDimension(widthMeasureSpec, heightMeasureSpec);
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}


@Override
protected void onLayout(boolean changed, int left, int top, int right,
int bottom) {
Log.d(TAG, "[onLayout] changed:"
+ (changed ? "new size" : "not change") + " left:" + left
+ " top:" + top + " right:" + right + " bottom:" + bottom);
if (changed) {
surface.init();
}
super.onLayout(changed, left, top, right, bottom);
}


@Override
protected void onDraw(Canvas canvas) {
Log.d(TAG, "onDraw");
// 画框
canvas.drawPath(surface.boxPath, surface.borderPaint);
// 年月
// String monthText = getYearAndmonth();
// float textWidth = surface.monthPaint.measureText(monthText);
// canvas.drawText(monthText, (surface.width - textWidth) / 2f,
// surface.monthHeight * 3 / 4f, surface.monthPaint);
// 上一月/下一月
// canvas.drawPath(surface.preMonthBtnPath,
// surface.monthChangeBtnPaint);
// canvas.drawPath(surface.nextMonthBtnPath,
// surface.monthChangeBtnPaint);
// 星期
float weekTextY = surface.monthHeight + surface.weekHeight * 3 / 4f;
// 星期背景
// surface.cellBgPaint.setColor(surface.textColor);
// canvas.drawRect(surface.weekHeight, surface.width,
// surface.weekHeight, surface.width, surface.cellBgPaint);
for (int i = 0; i < surface.weekText.length; i++) {
float weekTextX = i
* surface.cellWidth
+ (surface.cellWidth - surface.weekPaint
.measureText(surface.weekText[i])) / 2f;
canvas.drawText(surface.weekText[i], weekTextX, weekTextY,
surface.weekPaint);
}


// 计算日期
calculateDate();
// 按下状态，选择状态背景色
System.out.println("执行");
drawDownOrSelectedBg(canvas);
// write date number
// today index
int todayIndex = -1;
calendar.setTime(curDate);
String curYearAndMonth = calendar.get(Calendar.YEAR) + ""
+ calendar.get(Calendar.MONTH);
calendar.setTime(today);
String todayYearAndMonth = calendar.get(Calendar.YEAR) + ""
+ calendar.get(Calendar.MONTH);
if (curYearAndMonth.equals(todayYearAndMonth)) {
int todayNumber = calendar.get(Calendar.DAY_OF_MONTH);
todayIndex = curStartIndex + todayNumber - 1;
}
for (int i = 0; i < 42; i++) {
int color = surface.textColor;
if (isLastMonth(i)) {
color = surface.borderColor;
} else if (isNextMonth(i)) {
color = surface.borderColor;
}
if (todayIndex != -1 && i == todayIndex) {
color = surface.todayNumberColor;
}
drawCellText(canvas, i, date[i] + "", color);
}
super.onDraw(canvas);
}


private void calculateDate() {
calendar.setTime(curDate);
calendar.set(Calendar.DAY_OF_MONTH, 1);
int dayInWeek = calendar.get(Calendar.DAY_OF_WEEK);
Log.d(TAG, "day in week:" + dayInWeek);
int monthStart = dayInWeek;
if (monthStart == 1) {
monthStart = 8;
}
monthStart -= 1; // 以日为开头-1，以星期一为开头-2
curStartIndex = monthStart;
date[monthStart] = 1;
// last month
if (monthStart > 0) {
calendar.set(Calendar.DAY_OF_MONTH, 0);
int dayInmonth = calendar.get(Calendar.DAY_OF_MONTH);
for (int i = monthStart - 1; i >= 0; i--) {
date[i] = dayInmonth;
dayInmonth--;
}
calendar.set(Calendar.DAY_OF_MONTH, date[0]);
}
showFirstDate = calendar.getTime();
// this month
calendar.setTime(curDate);
calendar.add(Calendar.MONTH, 1);
calendar.set(Calendar.DAY_OF_MONTH, 0);
// Log.d(TAG, "m:" + calendar.get(Calendar.MONTH) + " d:" +
// calendar.get(Calendar.DAY_OF_MONTH));
int monthDay = calendar.get(Calendar.DAY_OF_MONTH);
for (int i = 1; i < monthDay; i++) {
date[monthStart + i] = i + 1;
}
curEndIndex = monthStart + monthDay;
// next month
for (int i = monthStart + monthDay; i < 42; i++) {
date[i] = i - (monthStart + monthDay) + 1;
}
if (curEndIndex < 42) {
// 显示了下一月的
calendar.add(Calendar.DAY_OF_MONTH, 1);
}
calendar.set(Calendar.DAY_OF_MONTH, date[41]);
showLastDate = calendar.getTime();
}


/**
* 
* @param canvas
* @param index
* @param text
*/
private void drawCellText(Canvas canvas, int index, String text, int color) {
int x = getXByIndex(index);
int y = getYByIndex(index);
surface.datePaint.setColor(color);
float cellY = surface.monthHeight + surface.weekHeight + (y - 1)
* surface.cellHeight + surface.cellHeight * 3 / 4f;
float cellX = (surface.cellWidth * (x - 1))
+ (surface.cellWidth - surface.datePaint.measureText(text))
/ 2f;
canvas.drawText(text, cellX, cellY, surface.datePaint);
}


/**
* 
* @param canvas
* @param index
* @param color
*/
private void drawCellBg(Canvas canvas, int index, int color, boolean b) {
int x = getXByIndex(index);
int y = getYByIndex(index);
surface.cellBgPaint.setColor(color);
float left = surface.cellWidth * (x - 1) + surface.borderWidth;
float top = surface.monthHeight + surface.weekHeight + (y - 1)
* surface.cellHeight + surface.borderWidth;
canvas.drawRect(left, top, left + surface.cellWidth
- surface.borderWidth, top + surface.cellHeight
- surface.borderWidth, surface.cellBgPaint);
if (b)
canvas.drawBitmap(BitmapFactory.decodeResource(getResources(),
R.drawable.icon), left + (float) surface.cellWidth
* (float) 0.5, top + surface.cellHeight * (float) 0.5,
new Paint());
}


private void drawDownOrSelectedBg(Canvas canvas) {
// down and not up
if (downDate != null) {
drawCellBg(canvas, downIndex, surface.cellDownColor, false);
}
// selected bg color
if (!selectedEndDate.before(showFirstDate)
&& !selectedStartDate.after(showLastDate)) {
int[] section = new int[] { -1, -1 };
calendar.setTime(curDate);
calendar.add(Calendar.MONTH, -1);
findSelectedIndex(0, curStartIndex, calendar, section);
if (section[1] == -1) {
calendar.setTime(curDate);
findSelectedIndex(curStartIndex, curEndIndex, calendar, section);
}
if (section[1] == -1) {
calendar.setTime(curDate);
calendar.add(Calendar.MONTH, 1);
findSelectedIndex(curEndIndex, 42, calendar, section);
}
if (section[0] == -1) {
section[0] = 0;
}
if (section[1] == -1) {
section[1] = 41;
}
for (int i = section[0]; i <= section[1]; i++) {
// drawCellBg(canvas, i, surface.cellSelectedColor);

}
}
if (map.size() > 0) {
Set<String> key = map.keySet();
for (Iterator it = key.iterator(); it.hasNext();) {
String s = (String) it.next();
System.out.println(s + "====" + currentMoth);
if (s.startsWith(currentMoth)) {
System.out.println(s + "==wwwwwwwwww==" + currentMoth);
s = s.split(" ")[1];
drawCellBg(canvas, Integer.parseInt(s),
surface.cellSelectedColor, true);
}
}
}
}


private void findSelectedIndex(int startIndex, int endIndex,
Calendar calendar, int[] section) {
for (int i = startIndex; i < endIndex; i++) {
calendar.set(Calendar.DAY_OF_MONTH, date[i]);
Date temp = calendar.getTime();
// Log.d(TAG, "temp:" + temp.toLocaleString());
if (temp.compareTo(selectedStartDate) == 0) {
section[0] = i;
}
if (temp.compareTo(selectedEndDate) == 0) {
section[1] = i;
return;
}
}
}


public Date getSelectedStartDate() {
return selectedStartDate;
}


public Date getSelectedEndDate() {
return selectedEndDate;
}


private boolean isLastMonth(int i) {
if (i < curStartIndex) {
return true;
}
return false;
}


private boolean isNextMonth(int i) {
if (i >= curEndIndex) {
return true;
}
return false;
}


private int getXByIndex(int i) {
return i % 7 + 1; // 1 2 3 4 5 6 7
}


private int getYByIndex(int i) {
return i / 7 + 1; // 1 2 3 4 5 6
}


// 获得当前应该显示的年月
public String getYearAndmonth() {
calendar.setTime(curDate);
int year = calendar.get(Calendar.YEAR);
int month = calendar.get(Calendar.MONTH);
return year + "-" + surface.monthText[month];
}


// 上一月
public String clickLeftMonth() {
calendar.setTime(curDate);
calendar.add(Calendar.MONTH, -1);
curDate = calendar.getTime();
currentMoth = calendar.get(1) + "" + calendar.get(2);
invalidate();
return getYearAndmonth();
}


// 下一月
public String clickRightMonth() {
calendar.setTime(curDate);
calendar.add(Calendar.MONTH, 1);
curDate = calendar.getTime();
currentMoth = calendar.get(1) + "" + calendar.get(2);
invalidate();
return getYearAndmonth();
}


private void setSelectedDateByCoor(float x, float y) {
// change month
// if (y < surface.monthHeight) {
// // pre month
// if (x < surface.monthChangeWidth) {
// calendar.setTime(curDate);
// calendar.add(Calendar.MONTH, -1);
// curDate = calendar.getTime();
// }
// // next month
// else if (x > surface.width - surface.monthChangeWidth) {
// calendar.setTime(curDate);
// calendar.add(Calendar.MONTH, 1);
// curDate = calendar.getTime();
// }
// }
// cell click down
if (y > surface.monthHeight + surface.weekHeight) {
int m = (int) (Math.floor(x / surface.cellWidth) + 1);
int n = (int) (Math
.floor((y - (surface.monthHeight + surface.weekHeight))
/ Float.valueOf(surface.cellHeight)) + 1);
downIndex = (n - 1) * 7 + m - 1;
Log.d(TAG, "downIndex:" + downIndex);
calendar.setTime(curDate);
if (isLastMonth(downIndex)) {
calendar.add(Calendar.MONTH, -1);
} else if (isNextMonth(downIndex)) {
calendar.add(Calendar.MONTH, 1);
}
calendar.set(Calendar.DAY_OF_MONTH, date[downIndex]);
downDate = calendar.getTime();
}
invalidate();
}


@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
setSelectedDateByCoor(event.getX(), event.getY());
break;
case MotionEvent.ACTION_UP:
if (downDate != null) {
// if (!completed) {
// if (downDate.before(selectedStartDate)) {
// selectedEndDate = selectedStartDate;
// selectedStartDate = downDate;
// } else {
// selectedEndDate = downDate;
// }
// completed = true;
// } else {
// selectedStartDate = selectedEndDate = downDate;
// completed = false;
// }
selectedStartDate = selectedEndDate = downDate;
Calendar cal = calendar.getInstance();
cal.setTime(downDate);
if (map.containsKey(cal.get(1) + "" + cal.get(2) + " "
+ downIndex)) {
map.remove(cal.get(1) + "" + cal.get(2) + " " + downIndex);
} else {
map.put(cal.get(1) + "" + cal.get(2) + " " + downIndex,
downDate);
}
// 响应监听事件
onItemClickListener.OnItemClick(selectedStartDate);
// Log.d(TAG, "downdate:" + downDate.toLocaleString());
// Log.d(TAG, "start:" + selectedStartDate.toLocaleString());
// Log.d(TAG, "end:" + selectedEndDate.toLocaleString());
downDate = null;
invalidate();
}
break;
}
return true;
}


// 给控件设置监听事件
public void setOnItemClickListener(OnItemClickListener onItemClickListener) {
this.onItemClickListener = onItemClickListener;
}


// 监听接口
public interface OnItemClickListener {
void OnItemClick(Date date);
}


/**
* 
* 1. 布局尺寸 2. 文字颜色，大小 3. 当前日期的颜色，选择的日期颜色
*/
private class Surface {
public float density;
public int width; // 整个控件的宽度
public int height; // 整个控件的高度
public float monthHeight; // 显示月的高度
// public float monthChangeWidth; // 上一月、下一月按钮宽度
public float weekHeight; // 显示星期的高度
public float cellWidth; // 日期方框宽度
public float cellHeight; // 日期方框高度
public float borderWidth;
public int bgColor = Color.parseColor("#FFFFFF");
private int textColor = Color.BLACK;
// private int textColorUnimportant = Color.parseColor("#666666");
private int btnColor = Color.parseColor("#666666");
private int borderColor = Color.parseColor("#CCCCCC");
public int todayNumberColor = Color.RED;
public int cellDownColor = Color.parseColor("#CCFFFF");
public int cellSelectedColor = Color.parseColor("#99CCFF");
public Paint borderPaint;
public Paint monthPaint;
public Paint weekPaint;
public Paint datePaint;
public Paint monthChangeBtnPaint;
public Paint cellBgPaint;
public Path boxPath; // 边框路径
// public Path preMonthBtnPath; // 上一月按钮三角形
// public Path nextMonthBtnPath; // 下一月按钮三角形
public String[] weekText = { "日", "一", "二", "三", "四", "五", "Sat" };
public String[] monthText = { "一月", "二月", "三月", "四月", "五月", "六月", "七月",
"八月", "九月", "十月", "十一月", "十二月" };


public void init() {
float temp = height / 7f;
monthHeight = 0;// (float) ((temp + temp * 0.3f) * 0.6);
// monthChangeWidth = monthHeight * 1.5f;
weekHeight = (float) ((temp + temp * 0.3f) * 0.7);
cellHeight = (height - monthHeight - weekHeight) / 6f;
cellWidth = width / 7f;
borderPaint = new Paint();
borderPaint.setColor(borderColor);
borderPaint.setStyle(Paint.Style.STROKE);
borderWidth = (float) (0.5 * density);
// Log.d(TAG, "borderwidth:" + borderWidth);
borderWidth = borderWidth < 1 ? 1 : borderWidth;
borderPaint.setStrokeWidth(borderWidth);
monthPaint = new Paint();
monthPaint.setColor(textColor);
monthPaint.setAntiAlias(true);
float textSize = cellHeight * 0.4f;
Log.d(TAG, "text size:" + textSize);
monthPaint.setTextSize(textSize);
monthPaint.setTypeface(Typeface.DEFAULT_BOLD);
weekPaint = new Paint();
weekPaint.setColor(textColor);
weekPaint.setAntiAlias(true);
float weekTextSize = weekHeight * 0.6f;
weekPaint.setTextSize(weekTextSize);
weekPaint.setTypeface(Typeface.DEFAULT_BOLD);
datePaint = new Paint();
datePaint.setColor(textColor);
datePaint.setAntiAlias(true);
float cellTextSize = cellHeight * 0.5f;
datePaint.setTextSize(cellTextSize);
datePaint.setTypeface(Typeface.DEFAULT_BOLD);
boxPath = new Path();
// boxPath.addRect(0, 0, width, height, Direction.CW);
// boxPath.moveTo(0, monthHeight);
boxPath.rLineTo(width, 0);
boxPath.moveTo(0, monthHeight + weekHeight);
boxPath.rLineTo(width, 0);
for (int i = 1; i < 6; i++) {
boxPath.moveTo(0, monthHeight + weekHeight + i * cellHeight);
boxPath.rLineTo(width, 0);
boxPath.moveTo(i * cellWidth, monthHeight);
boxPath.rLineTo(0, height - monthHeight);
}
boxPath.moveTo(6 * cellWidth, monthHeight);
boxPath.rLineTo(0, height - monthHeight);
// preMonthBtnPath = new Path();
// int btnHeight = (int) (monthHeight * 0.6f);
// preMonthBtnPath.moveTo(monthChangeWidth / 2f, monthHeight / 2f);
// preMonthBtnPath.rLineTo(btnHeight / 2f, -btnHeight / 2f);
// preMonthBtnPath.rLineTo(0, btnHeight);
// preMonthBtnPath.close();
// nextMonthBtnPath = new Path();
// nextMonthBtnPath.moveTo(width - monthChangeWidth / 2f,
// monthHeight / 2f);
// nextMonthBtnPath.rLineTo(-btnHeight / 2f, -btnHeight / 2f);
// nextMonthBtnPath.rLineTo(0, btnHeight);
// nextMonthBtnPath.close();
monthChangeBtnPaint = new Paint();
monthChangeBtnPaint.setAntiAlias(true);
monthChangeBtnPaint.setStyle(Paint.Style.FILL_AND_STROKE);
monthChangeBtnPaint.setColor(btnColor);
cellBgPaint = new Paint();
cellBgPaint.setAntiAlias(true);
cellBgPaint.setStyle(Paint.Style.FILL);
cellBgPaint.setColor(cellSelectedColor);
}
}

//获取选择日期的集合
public List<String> getSelectedDateString(SimpleDateFormat format) {
if (map.size() > 0) {
return new ArrayList<String>();
} else {
Set keys = map.keySet();
List list = new ArrayList<String>();
for (Iterator it = keys.iterator(); it.hasNext();) {
list.add(format.format(map.get(it.next())));
}
return list;
}
}

}