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, "border" + 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); } } }