Sample.java

package com.weekcalendar.sample;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;

import com.android.datetimepicker.date.DatePickerDialog;
import com.weekcalendar.WeekCalendarFragment;
import com.weekcalendar.listener.CalenderListener;
import com.weekcalendar.utils.WeekCalendarOptions;

import org.joda.time.LocalDateTime;

import java.util.ArrayList;
import java.util.Calendar;

/**
 * Created by rameshvoltella on 11/10/15.
 * Edit: Asi Mugrabi
 */

//## Licence of Date picker used in this sample

/**
 * Copyright 2014 Paul Stöhr
 * Copyright 2013 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

public class Sample extends AppCompatActivity implements DatePickerDialog.OnDateSetListener {
    private WeekCalendarFragment mWeekCalendarFragment;
    private TextView mDateSelectedTv;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.sample);

        mDateSelectedTv = (TextView) findViewById(R.id.txt_date);
        mWeekCalendarFragment = (WeekCalendarFragment) getSupportFragmentManager()
                .findFragmentByTag(WeekCalendarFragment.class.getSimpleName());

        if (mWeekCalendarFragment == null) {
            mWeekCalendarFragment = new WeekCalendarFragment();

            Bundle args = new Bundle();

            /* Must add this attribute if using ARGUMENT_NOW_BACKGROUND or ARGUMENT_SELECTED_DATE_BACKGROUND*/
            args.putString(WeekCalendarFragment.ARGUMENT_PACKAGE_NAME
                    , getApplicationContext().getPackageName());

            /* IMPORTANT: Customization for week calender fragment*/
//------------------------------------------------------------------------------------------------//
            //sets background drawable to the selected dates - null to disable
            args.putString(WeekCalendarFragment.ARGUMENT_SELECTED_DATE_BACKGROUND, "bg_select");
//            args.putString(WeekCalendarFragment.ARGUMENT_SELECTED_DATE_BACKGROUND, null);// disable

            //Sets background color to calender
            args.putInt(WeekCalendarFragment.ARGUMENT_CALENDER_BACKGROUND_COLOR
                    , ContextCompat.getColor(this, R.color.md_deep_purple_500));

            // Sets text color for the selected date
//            args.putInt(WeekCalendarFragment.ARGUMENT_SELECTED_DATE_HIGHLIGHT_COLOR
//                  , ContextCompat.getColor(this, R.color.md_pink_200));

            // Adds N weeks from the current week (53 or 52 week is one year)
            args.putInt(WeekCalendarFragment.ARGUMENT_WEEK_COUNT, 1000);

            // Cancels date picker
            args.putBoolean(WeekCalendarFragment.ARGUMENT_DISPLAY_DATE_PICKER, false);

            // Sets background resource drawable to nowView
//        args.putString(WeekCalendarFragment.ARGUMENT_NOW_BACKGROUND,"bg_now");

            // Sets text color to the current date
//        args.putInt(WeekCalendarFragment.ARGUMENT_CURRENT_DATE_TEXT_COLOR
//                    , ContextCompat.getColor(this, R.color.md_green_500));

            // Sets color to the primary views (Month name and dates)
//        args.putInt(WeekCalendarFragment.ARGUMENT_PRIMARY_TEXT_COLOR
//                   , ContextCompat.getColor(this,R.color.md_yellow_500));

            // Sets text size of dates
//        args.putInt(WeekCalendarFragment.ARGUMENT_DAY_TEXT_SIZE, 18);
//
            // Sets typeface style of date texts
//        args.putInt(WeekCalendarFragment.ARGUMENT_DAY_TEXT_STYLE, Typeface.BOLD_ITALIC);
//
            // Sets color to the secondary views (now view and week names)
   /*     args.putInt(WeekCalendarFragment.ARGUMENT_SECONDARY_TEXT_COLOR
                  , ContextCompat.getColor(this,R.color.md_green_500));*/

            // Sets typeface size of secondary text views (now view and week names)
//        args.putInt(WeekCalendarFragment.ARGUMENT_SECONDARY_TEXT_SIZE, 18);

            // Sets typeface style of secondary text views (now view and week names)
//        args.putInt(WeekCalendarFragment.ARGUMENT_SECONDARY_TEXT_STYLE, Typeface.ITALIC);

            // Picks between three or one date header letters ex. "Sun" or "S"
            // two options:
            // 1. WeekCalendarOptions.DAY_HEADER_LENGTH_THREE_LETTERS
            // 2. WeekCalendarOptions.DAY_HEADER_LENGTH_ONE_LETTER
            args.putString(WeekCalendarFragment.ARGUMENT_DAY_HEADER_LENGTH
                    , WeekCalendarOptions.DAY_HEADER_LENGTH_THREE_LETTERS);

            // Days that have events
            ArrayList<Calendar> eventDays = new ArrayList<>();
            eventDays.add(Calendar.getInstance());
            eventDays.add(Calendar.getInstance());
            eventDays.add(Calendar.getInstance());
            eventDays.get(1).add(Calendar.DAY_OF_MONTH, 1);
            eventDays.get(2).add(Calendar.WEEK_OF_MONTH, 1);
            args.putSerializable(WeekCalendarFragment.ARGUMENT_EVENT_DAYS, eventDays);

            // Sets the color of event dots
            // 5 options:
            // 1. WeekCalendarOptions.EVENT_COLOR_YELLOW, 2. WeekCalendarOptions.EVENT_COLOR_BLUE
            // 3. WeekCalendarOptions.EVENT_COLOR_GREEN, 4. WeekCalendarOptions.EVENT_COLOR_RED
            // 5. WeekCalendarOptions.EVENT_COLOR_WHITE
            args.putString(WeekCalendarFragment.ARGUMENT_EVENT_COLOR
                    , WeekCalendarOptions.EVENT_COLOR_YELLOW);

//------------------------------------------------------------------------------------------------//
            mWeekCalendarFragment.setArguments(args);

            // Attach to the activity
            FragmentTransaction t = getSupportFragmentManager().beginTransaction();
            t.replace(R.id.container, mWeekCalendarFragment, WeekCalendarFragment.class.getSimpleName());
            t.commit();
        }

        CalenderListener listener = new CalenderListener() {
            @Override
            public void onSelectPicker() {
                //User can use any type of pickers here the below picker is only Just a example
                DatePickerDialog.newInstance(Sample.this,
                        Calendar.getInstance().get(Calendar.YEAR),
                        Calendar.getInstance().get(Calendar.MONTH),
                        Calendar.getInstance().get(Calendar.DAY_OF_MONTH))
                        .show(getFragmentManager(), "datePicker");
            }

            @Override
            public void onSelectDate(LocalDateTime mSelectedDate) {
                //callback when a date is selcted
                mDateSelectedTv.setText(""
                        + mSelectedDate.getDayOfMonth()
                        + "-"
                        + mSelectedDate.getMonthOfYear()
                        + "-"
                        + mSelectedDate.getYear());
            }
        };
        //setting the listener
        mWeekCalendarFragment.setCalenderListener(listener);

        mWeekCalendarFragment.setPreSelectedDate(Calendar.getInstance());
    }

    @Override
    public void onDateSet(DatePickerDialog dialog, int year, int monthOfYear, int dayOfMonth) {
        //This is the call back from picker used in the sample. You can use custom or any other picker
        //IMPORTANT: get the year,month and date from picker you using and call setDateWeek method
        Calendar calendar = Calendar.getInstance();
        calendar.set(year, monthOfYear, dayOfMonth);
        mWeekCalendarFragment.setDateWeek(calendar);//Sets the selected date from Picker
    }
}