calendar.png

最近项目中需要用到日历控件，1.需要给已经记录的日期添加圆环标记2.给当天日期添加背景3.给周末日期更改颜色4.日历添加农历，需求如上图所示：

GitHub的material-calendarview star较高，而且项目最贴近以上需求

集成清单

1.添加compile'com.prolificinteractive:material-calendarview:1.4.2'

2.添加日历控件到布局中

功能展示

一.基础的功能和事件这里不做描述，可以到官方的demo中细看，下面贴出基础设置的xml和代码：

calendarView = (MaterialCalendarView) findViewById(R.id.calendar_calendarView);

year = TimeUtils.date2String(date, "yyyy");

month = TimeUtils.date2String(date, "MM");

//设置当前时间

calendarView.setCurrentDate(date);

calendarView

.state()

.edit()

//设置一周的第一天是周日还是周一

.setFirstDayOfWeek(Calendar.SUNDAY)

//设置日期范围

.setMinimumDate(CalendarDay.from(Integer.valueOf(year), Integer.parseInt(month) - 1, 1))

.setMaximumDate(CalendarDay.from(Integer.valueOf(year), Integer.parseInt(month) - 1, 31))

.setCalendarDisplayMode(CalendarMode.MONTHS)

.commit();

//设置周的文本

calendarView.setWeekDayLabels(new String[]{"日", "一", "二", "三", "四", "五", "六"});

//设置年月的title

calendarView.setTitleFormatter(new TitleFormatter() {

@Override

public CharSequence format(CalendarDay day) {

StringBuffer buffer = new StringBuffer();

int yearOne = day.getYear();

int monthOne = day.getMonth() + 1;

buffer.append(yearOne).append("年").append(monthOne).append("月");

return buffer;

}

});

//添加修饰

calendarView.addDecorators(new HighlightWeekendsDecorator(), new SameDayDecorator(), new LunarDecorator(year, month), new WorkdayDecorator());

//日期点击事件

calendarView.setOnDateChangedListener(this);

二.下面介绍MaterialCalendarView的强大自定义功能，addDecorators给特定日期添加特殊标记,首先要实现DayViewDecorator ，里面的shouldDecorate方法用于判断是否要对指定日期进行修饰，返回值boolean，decorate方法用于设置样式，里面运用了之前根本不了解的各种Span。

1.给周末日期设置特殊字体颜色：

/**

* 作者：徐敏敏 on 2016/12/20 0020 14:27

* 邮箱：15067596185@163.com

*/

public class HighlightWeekendsDecorator implements DayViewDecorator {

private final Calendar calendar = Calendar.getInstance();

@Override

public boolean shouldDecorate(CalendarDay day) {

day.copyTo(calendar);

int weekDay = calendar.get(Calendar.DAY_OF_WEEK);

return weekDay == Calendar.SATURDAY || weekDay == Calendar.SUNDAY;

}

@Override

public void decorate(DayViewFacade view) {

view.addSpan(new ForegroundColorSpan(Color.parseColor("#fd755c")));

}

}

2.给日历当天进行圆背景修饰：

/**

* 作者：徐敏敏 on 2016/12/20 0020 14:27

* 邮箱：15067596185@163.com

*/

public class SameDayDecorator implements DayViewDecorator {

@Override

public boolean shouldDecorate(CalendarDay day) {

Date date = new Date();

String dateStr = TimeUtils.date2String(date, "yyyy-MM-dd");

Date parse = TimeUtils.string2Date(dateStr, "yyyy-MM-dd");

if (day.getDate().equals(parse)) {

return true;

}

return false;

}

@Override

public void decorate(DayViewFacade view) {

view.addSpan(new CircleBackGroundSpan());

}

}

/**

* 作者：徐敏敏 on 2016/12/20 0020 14:27

* 邮箱：15067596185@163.com

*/

public class CircleBackGroundSpan implements LineBackgroundSpan {

@Override

public void drawBackground(Canvas c, Paint p, int left, int right, int top, int baseline, int bottom, CharSequence text, int start, int end, int lnum) {

Paint paint = new Paint();

paint.setColor(Color.parseColor("#def0ef"));

c.drawCircle((right - left) / 2, (bottom - top) / 2 + dip2px(4), dip2px(18), paint);

}

}

3.给日历每一天下方添加农历字体：

/**

* 作者：徐敏敏 on 2016/12/20 0020 14:27

* 邮箱：15067596185@163.com

*/

public class LunarDecorator implements DayViewDecorator {

private String year;

private String month;

public LunarDecorator(String year, String month) {

this.year = year;

this.month = month;

}

@Override

public boolean shouldDecorate(CalendarDay day) {

return true;

}

@Override

public void decorate(DayViewFacade view) {

view.addSpan(new LunarSpan(year,month));

}

}

/**

* 作者：徐敏敏 on 2016/12/20 0020 14:27

* 邮箱：15067596185@163.com

*/

public class LunarSpan implements LineBackgroundSpan {

private String year;

private String month;

public LunarSpan(String year, String month) {

this.year = year;

this.month = month;

}

@Override

public void drawBackground(Canvas c, Paint p, int left, int right, int top, int baseline, int bottom, CharSequence text, int start, int end, int lnum) {

StringBuffer buffer = new StringBuffer();

buffer.append(year).append("-").append(month).append("-").append(text);

Date parse = TimeUtils.string2Date(buffer.toString(), "yyyy-MM-dd");

Calendar calendar = Calendar.getInstance();

calendar.setTime(parse);

Lunar lunar = new Lunar(calendar);

String chinaDayString = lunar.getChinaDayString();

Paint paint = new Paint();

paint.setTextSize(dip2px(10));

paint.setColor(Color.parseColor("#cccccc"));

c.drawText(chinaDayString, (right - left) / 2 - dip2px(10), (bottom - top) / 2 + dip2px(17), paint);

}

}

4.对特定日期增加圆环修饰:

/**

* 作者：徐敏敏 on 2016/12/20 0020 14:27

* 邮箱：15067596185@163.com

*/

public class EventDecorator implements DayViewDecorator {

private List dates;

public EventDecorator(List dates) {

this.dates = dates;

}

@Override

public boolean shouldDecorate(CalendarDay day) {

return dates.contains(day.getDate());

}

@Override

public void decorate(DayViewFacade view) {

view.addSpan(new AnnulusSpan());

}

}

/**

* 作者：徐敏敏 on 2016/12/20 0020 14:27

* 邮箱：15067596185@163.com

*/

public class AnnulusSpan implements LineBackgroundSpan {

@Override

public void drawBackground(Canvas c, Paint p, int left, int right, int top, int baseline, int bottom, CharSequence text, int start, int end, int lnum) {

Paint paint = new Paint();

paint.setAntiAlias(true); //消除锯齿

paint.setStyle(Paint.Style.STROKE);//绘制空心圆或 空心矩形

int ringWidth = dip2px(1);//圆环宽度

//绘制圆环

paint.setColor(Color.parseColor("#00bcbe"));

paint.setStrokeWidth(ringWidth);

c.drawCircle((right - left) / 2, (bottom - top) / 2 + dip2px(4), dip2px(18), paint);

}

}