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本文介紹了如何在物料日歷視圖的選定日期中設置顏色的處理方法，對大家解決問題具有一定的參考價值，需要的朋友們下面隨著小編來一起學習吧！

問題描述

我有這樣的材料日歷視圖

private RecyclerView recycler_month_event_lists;
private FirebaseRecyclerAdapter adapter;

我是這樣分配的

recycler_month_event_lists = (RecyclerView) view.findViewById(R.id.event_recycler_view);
calendar_view = (MaterialCalendarView) view.findViewById(R.id.calendar_view);

我已經通過Firebase RecillerAdapter列出了各自月份的事件，如下所示

recycler_month_event_lists.setLayoutManager(new LinearLayoutManager(getActivity()));
    adapter = new FirebaseRecyclerAdapter<Event, EventViewHolder>(Event.class, R.layout.row_event_list,
            EventViewHolder.class, mRef.child("events").child("1").child(month)) {

        @Override
        protected void populateViewHolder(EventViewHolder viewHolder, Event model, int position) {
            List<CalendarDay> list = new ArrayList<CalendarDay>();
            ArrayList<Integer> day = model.getDate();
            ArrayList<Date> markedDates = new ArrayList<>();
            Calendar calendar = Calendar.getInstance();

            //generating ArrayList<Date> 
            for (int i = 0; i < day.size(); ++i) {
                Calendar cal = Calendar.getInstance();
                Integer year = cal.get(Calendar.YEAR);
                cal.set(Calendar.YEAR, year);
                cal.set(Calendar.DAY_OF_MONTH, day.get(i));
                cal.set(Calendar.MONTH, Integer.valueOf(month));
                Date newdate = cal.getTime();
                markedDates.add(newdate);
            }
            //adding those generated ArrayList<Dates> in List<CalendarDays>
            for (Date date : markedDates) {
                // might be a more elegant way to do this part, but this is very explicit
                int year = date.getYear();
                int month = date.getMonth() -1; // months are 0-based in Calendar
                int newday = date.getDay();

                calendar.set(year, month, newday);
                CalendarDay calendarDay = CalendarDay.from(calendar);
                list.add(calendarDay);
            }

            //adding list of CalendarDays
            calendarDays = list;

            //code to decorate selected dates
            calendar_view.addDecorators(new EventDecorator(Color.parseColor("#00ff00"), calendarDays));



            if (!day.isEmpty()) {

                for(int i = 0; i < day.size();i++){
                    int z = i+1;
                    if(i == 0){
                        from = "From"+ " " +day.get(i);
                    }

                    if(z == day.size()){
                        to = "to"+ " " +day.get(i);
                    }
                }


            }

            viewHolder.ev_title.setText(model.getTitle());
            viewHolder.ev_description.setText(model.getDescription());
            viewHolder.ev_date.setText(from + " " + to);
            Glide.with(getActivity()).load(model.getIcon()).into(viewHolder.ev_image);


        }
    };
    recycler_month_event_lists.setAdapter(adapter);

}

此處ArrayList<Integer> day = model.getDate();返回需要上色的日期。一天的日志是這樣的

D/arra: [1, 2, 3]

我不能給我的約會對象涂上顏色。我不知道我的代碼出了什么問題。

我使用了

calendar_view.addDecorators(new EventDecorator(Color.parseColor("#00ff00"), calendarDays));

裝飾選定的日子
我的EventDecorator是這樣的

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));
}
}

我的日歷天數是這樣的

private Collection<CalendarDay> calendarDays = new Collection<CalendarDay>() {
    @Override
    public boolean add(CalendarDay object) {
        return false;
    }

    @Override
    public boolean addAll(Collection<? extends CalendarDay> collection) {
        return false;
    }

    @Override
    public void clear() {

    }

    @Override
    public boolean contains(Object object) {
        return false;
    }

    @Override
    public boolean containsAll(Collection<?> collection) {
        return false;
    }

    @Override
    public boolean isEmpty() {
        return false;
    }

    @NonNull
    @Override
    public Iterator<CalendarDay> iterator() {
        return null;
    }

    @Override
    public boolean remove(Object object) {
        return false;
    }

    @Override
    public boolean removeAll(Collection<?> collection) {
        return false;
    }

    @Override
    public boolean retainAll(Collection<?> collection) {
        return false;
    }

    @Override
    public int size() {
        return 0;
    }

    @NonNull
    @Override
    public Object[] toArray() {
        return new Object[0];
    }

    @NonNull
    @Override
    public <T> T[] toArray(T[] array) {
        return null;
    }
};

推薦答案

我看過您的代碼，我確信問題出在EventDecorator中的decorate方法中。

view.addSpan(new DotSpan(5, color));

在材料日期上不起作用(或者至少不會按您希望的方式更改顏色)。

您可以使用

view.addSpan(new ForegroundColorSpan(color));

或

view.addSpan(new BackgroundColorSpan(color));

改為。

請確保為正確的日期調用public void decorate(DayViewFacade view)。如果您可以確保這一點，則設置顏色范圍應該有效。

這篇關于如何在物料日歷視圖的選定日期中設置顏色的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，