Android Open Source - holo-calendar Multi Calendar Adapter

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License

The source code is released under:

Apache License

Java Source Code

package com.vdesmet.lib.calendar;
// ww  w .ja  v a2 s .c o m
import android.content.Context;
import android.graphics.Typeface;
import android.support.v4.view.PagerAdapter;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.viewpagerindicator.TitleProvider;

import java.util.Calendar;

public class MultiCalendarAdapter extends PagerAdapter implements TitleProvider {
    private final Context mContext;
    private final MultiCalendarView mCalendarView;

    public MultiCalendarAdapter(final Context context, final MultiCalendarView calendarView) {
        super();
        this.mCalendarView = calendarView;
        this.mContext = context;
    }

    @Override
    public int getCount() {
        final MultiCalendarView calendarView = mCalendarView;

        final Calendar firstDay = calendarView.getFirstValidDay();
        final Calendar lastDay = calendarView.getLastValidDay();

        if(firstDay != null && lastDay != null) {
            // get the difference in years and in months
            // note that months may be smaller than zero,
            // for example, when firstDay is December 2012 and lastDay is January 2013: (1*12) + (0 - 11) = 1
            final int years = lastDay.get(Calendar.YEAR) - firstDay.get(Calendar.YEAR);
            final int months = lastDay.get(Calendar.MONTH) - firstDay.get(Calendar.MONTH);

            final int diffMonths = (years * 12) + months;

            // January - February is 1 month later, but we have 2 months to show
            return diffMonths + 1;
        }
        return 0;
    }

    @Override
    public void destroyItem(final ViewGroup container, final int position, final Object item) {
        if(item instanceof View) {
            container.removeView((View) item);
        }
    }

    @Override
    public View instantiateItem(final ViewGroup container, final int position) {

        // initialize variables
        final MultiCalendarView multiCalendarView = mCalendarView;
        final Context context = multiCalendarView.getContext();
        final Calendar firstDay = multiCalendarView.getFirstValidDay();
        final Calendar lastDay = multiCalendarView.getLastValidDay();
        final DayAdapter dayAdapter = multiCalendarView.getDayAdapter();
        final OnDayClickListener onDayClickListener = multiCalendarView.getOnDayClickListener();
        final int firstDayOfWeek = multiCalendarView.getFirstDayOfWeek();
        final int lastDayOfWeek = multiCalendarView.getLastDayOfWeek();
        final int dayStyle = multiCalendarView.getDayStyle();
        final Typeface typeface = multiCalendarView.getTypeface();
        final LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        // create first day of the monthView
        final Calendar firstMonthDay = Calendar.getInstance();
        firstMonthDay.setTimeInMillis(firstDay.getTimeInMillis());
        firstMonthDay.add(Calendar.MONTH, position);
        if(position != 0) {
            firstMonthDay.set(Calendar.DAY_OF_MONTH, 1);
        }

        // create the View. Note that we use a container around the CalendarView to support wrap_content
        final View monthViewContainer = inflater.inflate(R.layout.lib_calendar_single_month, container, false);
        final CalendarView monthView = (CalendarView) monthViewContainer.findViewById(R.id.lib_calendar_single_month);

        monthView.setFirstValidDay(firstMonthDay);

        if(lastDay.get(Calendar.MONTH) == firstMonthDay.get(Calendar.MONTH)) {
            // the last day is in this month
            monthView.setLastValidDay(lastDay);
        }
        // set typeface
        monthView.setTypeface(typeface);

        // add adapter and onClickListener
        monthView.setOnDayClickListener(onDayClickListener);
        monthView.setDayAdapter(dayAdapter);

        // set first and last day of week
        monthView.setFirstDayOfWeek(firstDayOfWeek);
        monthView.setLastDayOfWeek(lastDayOfWeek);

        // set day style
        monthView.setDayStyle(dayStyle);

        // return view
        container.addView(monthViewContainer);

        return monthViewContainer;
    }

    @Override
    public int getItemPosition(Object object) {
        return POSITION_NONE;
    }

    @Override
    public boolean isViewFromObject(final View view, final Object o) {
        return view == o;
    }

    /**
     * Get the title for the current position
     *
     * @param position - The position in the ViewPager
     * @return Title: MONTH YEAR -> MARCH 2013
     */
    @Override
    public String getTitle(final int position) {
        final Context context = mContext;
        final Calendar date = Calendar.getInstance();
        date.setTimeInMillis((mCalendarView.getFirstValidDay().getTimeInMillis()));
        date.add(Calendar.MONTH, position);

        final String month;
        switch(date.get(Calendar.MONTH)) {
            case Calendar.JANUARY:
                month = context.getString(R.string.lib_month_january);
                break;
            case Calendar.FEBRUARY:
                month = context.getString(R.string.lib_month_february);
                break;
            case Calendar.MARCH:
                month = context.getString(R.string.lib_month_march);
                break;
            case Calendar.APRIL:
                month = context.getString(R.string.lib_month_april);
                break;
            case Calendar.MAY:
                month = context.getString(R.string.lib_month_may);
                break;
            case Calendar.JUNE:
                month = context.getString(R.string.lib_month_june);
                break;
            case Calendar.JULY:
                month = context.getString(R.string.lib_month_july);
                break;
            case Calendar.AUGUST:
                month = context.getString(R.string.lib_month_august);
                break;
            case Calendar.SEPTEMBER:
                month = context.getString(R.string.lib_month_september);
                break;
            case Calendar.OCTOBER:
                month = context.getString(R.string.lib_month_october);
                break;
            case Calendar.NOVEMBER:
                month = context.getString(R.string.lib_month_november);
                break;
            default:
            case Calendar.DECEMBER:
                month = context.getString(R.string.lib_month_december);
                break;
        }

        return month + " " + date.get(Calendar.YEAR);
    }
}

Java Source Code List

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