android 自定义日历控件

日历控件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 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() {
curDate = selectedStartDate = selectedEndDate = today = new Date();
calendar = Calendar.getInstance();
calendar.setTime(curDate);
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
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) {
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);
}
private void drawDownOrSelectedBg(Canvas canvas) {
// down and not up
if (downDate != null) {
drawCellBg(canvas, downIndex, surface.cellDownColor);
}
// 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);
}
}
}
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();
invalidate();
return getYearAndmonth();
}
//下一月
public String clickRightMonth(){
calendar.setTime(curDate);
calendar.add(Calendar.MONTH, 1);
curDate = calendar.getTime();
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;
//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 = { "Sun","Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
public String[] monthText = {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
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);
}
}
}

/**

 * 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 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() {

		curDate = selectedStartDate = selectedEndDate = today = new Date();

		calendar = Calendar.getInstance();

		calendar.setTime(curDate);

		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

		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) {

		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);

	}

	private void drawDownOrSelectedBg(Canvas canvas) {

		// down and not up

		if (downDate != null) {

			drawCellBg(canvas, downIndex, surface.cellDownColor);

		}

		// 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);

			}

		}

	}

	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();

		invalidate();

		return getYearAndmonth();

	}

	//下一月

	public String clickRightMonth(){

		calendar.setTime(curDate);

		calendar.add(Calendar.MONTH, 1);

		curDate = calendar.getTime();

		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;

				//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 = { "Sun","Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};

		public String[] monthText = {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};

		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);

		}

	}

}

实现日历控件：

<RelativeLayout
android:id="@+id/layout_calendar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:visibility="visible" >
<TextView
android:id="@+id/calendarCenter"
style="@style/main_bar_text_style"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_margin="8dp" />
<ImageButton
android:id="@+id/calendarLeft"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:padding="8dp"
android:contentDescription="@null"
android:src="@drawable/calendar_month_left"
android:background="@null"/>
<ImageButton
android:id="@+id/calendarRight"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:padding="8dp"
android:contentDescription="@null"
android:src="@drawable/calendar_month_right"
android:background="@null"/>
<com.techrare.view.CalendarView
android:id="@+id/calendar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/calendarCenter" />
</RelativeLayout>

        <RelativeLayout

            android:id="@+id/layout_calendar"

            android:layout_width="fill_parent"

            android:layout_height="wrap_content"

            android:visibility="visible" >

            <TextView

                android:id="@+id/calendarCenter"

                style="@style/main_bar_text_style"

                android:layout_width="wrap_content"

                android:layout_height="wrap_content"

                android:layout_centerHorizontal="true"

                android:layout_margin="8dp" />

            <ImageButton

                android:id="@+id/calendarLeft"

                android:layout_width="wrap_content"

                android:layout_height="wrap_content"

                android:layout_alignParentLeft="true"

                android:padding="8dp"

                android:contentDescription="@null"

                android:src="@drawable/calendar_month_left"

                android:background="@null"/>

            <ImageButton

                android:id="@+id/calendarRight"

                android:layout_width="wrap_content"

                android:layout_height="wrap_content"

                android:layout_alignParentRight="true"

                android:padding="8dp"

                android:contentDescription="@null"

                android:src="@drawable/calendar_month_right"

                android:background="@null"/>

            <com.techrare.view.CalendarView

                android:id="@+id/calendar"

                android:layout_width="fill_parent"

                android:layout_height="wrap_content"

                android:layout_alignParentLeft="true"

                android:layout_below="@+id/calendarCenter" />

        </RelativeLayout>

<style name="main_bar_text_style">
<item name="android:textColor">@color/white</item>
<item name="android:textStyle">bold</item>
<item name="android:textSize">18sp</item>
</style>

     <style name="main_bar_text_style">

         <item name="android:textColor">@color/white</item>

         <item name="android:textStyle">bold</item>

         <item name="android:textSize">18sp</item>

     </style>

上一月图片：

android 自定义日历控件

调用 calendar.clickLeftMonth();

调用 calendar.clickLeftMonth();

下一月：

android 自定义日历控件

调用 calendar.clickRightMonth();

调用 calendar.clickRightMonth();

日历控件中的一些功能（可以自己加）：

//获取日历控件对象
calendar = (CalendarView)findViewById(R.id.calendar);
//获取日历中年月 ya[0]为年，ya[1]为月（格式大家可以自行在日历控件中改）
String[] ya = calendar.getYearAndmonth().split("-");
//点击上一月同样返回年月
String leftYearAndmonth = calendar.clickLeftMonth();
String[] lya = leftYearAndmonth.split("-");
//点击下一月
String rightYearAndmonth = calendar.clickRightMonth();
String[] rya = rightYearAndmonth.split("-");
//设置控件监听，可以监听到点击的每一天（大家也可以在控件中自行设定）
calendar.setOnItemClickListener(new calendarItemClickListener());
class calendarItemClickListener implements OnItemClickListener{
@Override
public void OnItemClick(Date date) {
Toast.makeText(getApplicationContext(), date+"", Toast.LENGTH_SHORT).show();
}
}

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android 自定义日历控件

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