MaterialCalendarView使用时遇到的问题

一、概述

MaterialCalendarView是一个开源项目。功能强大支持多选、单选、标注等。

二、问题

1、其继承自ViewGroup，故与CalendarView半毛钱关系都没有，完全是一个新的类

2、其子类CalendarDay是经过调整的

CalendarDay date = new CalendarDay();
......
Log.e(LOG_TAG, "Date选中日期：" + date.getDate().getYear() + "-" + date.getDate().getMonth() + "-" + date.getDate().getDay());
Log.e(LOG_TAG, "Calendar选中日期：" + date.getCalendar().get(Calendar.YEAR) + "-" + (date.getCalendar().get(Calendar.MONTH) + 1) + "-" + date.getCalendar().get(Calendar.DAY_OF_MONTH));

得到的结果为

Date选中日期：116-3-6
Calendar选中日期：2016-4-30

即：

CalendarDay.getDate().getYear()得到的年份 = 真实年份 - 1900
CalendarDay.getDate().getMonth()得到的月份 = 真实年份 - 1
CalendarDay.getDate().getDay()得到的日 = 星期数 - 1

3、关于DayViewDecorator类

此类为抽象类，定义如下

/**
 * Decorate Day views with drawables and text manipulation
 */
public interface DayViewDecorator {

    /**
     * Determine if a specific day should be decorated
     *
     * @param day {@linkplain CalendarDay} to possibly decorate
     * @return true if this decorator should be applied to the provided day
     */
    boolean shouldDecorate(CalendarDay day);

    /**
     * Set decoration options onto a facade to be applied to all relevant days
     *
     * @param view View to decorate
     */
    void decorate(DayViewFacade view);

}

实际使用时，只需实现上述两个方法即可，例如

public class EventDecorator implements DayViewDecorator {

    private final int color;
    private final HashSet<CalendarDay> dates;

    public EventDecorator(int color, Collection<CalendarDay> dates) {
        this.color = color;
        this.dates = new HashSet<>(dates);
    }

    @Override
    public boolean shouldDecorate(CalendarDay day) {
        return dates.contains(day);
    }

    @Override
    public void decorate(DayViewFacade view) {
        view.addSpan(new DotSpan(5, color));
    }
}