Min SDK : 16

Price : Free

Language : Java


Link : Github

Owner : SpongeBobSun

Source Code : Download


Android Arsenal Customizable & Expandable Calendar Widget for Android

Project Components

mCalendarView provide below components.
  • mCalendarView, which is our customizable calendar widget.
  • ExpCalendarView, which is expandable calendar widget.
  • BaseCellView, an abstract view class for date cells.
  • BaseMarkView, an abstract view class for marked / highlighted date cells.
  • MarkStyle, provide built-in and default mark / highlight style values.
  • DefaultCellView, default view for date cells.
  • DefaultMarkView, dafault view for mark / highlight cells.
  • OnDateClickListener, which will be triggered when date cell is clicked.
  • OnMonthChangeListener, which will be triggered when changing month by sliding left / right.

Project Structure

After checkout this repo, you will get a sample project and the mCalendarView module is located in mcalendarview folder. Class mCalednarView is for normal calendar view. Class ExpCalendarView is for expandable calendar view. Expandable calendar view is contributed by my homie mBigMing. Big thank you for that.


I used Android built-in screenrecord command to get the screenshot. But for some reason I don't know, the screen color is weird... Alt Alt



Add dependency to your build.gradle
dependencies {
compile 'sun.bob:mcalendarview:1.0.0'

Add to Layout

To use mCalendarView, you need to add it in layout by using xml file or Java code.

Add normal calendarview

Make sure you specifiy an FragmentActivity or it's sub-class as mCalendarView's context.

Add expandable calendarview

tools:context=".MainActivity" />

Jump to Date

By default, mCalendarView will display current month. If you what to jump to another month, use travelTo(DateData date) function in mCalendarView.
mCalendarView calendarView = ((mCalendarView) findViewById(R.id.calendar));
calendarView.travelTo(new DateData(1992, 5, 5));

Mark / Highlight a Date

Android's built-in widget dosen't have this feature, that's why I'm writing this widget. There are two method in mCalendarViewClass to highlight a date.
  • markDate(int year, int month, int day);
  • markDate(DateData date);
To mark / highlight a date, use one of those two functions in mCalendarView. Below function will hightlight a date with default / global color and style.
mCalendarView calendarView = ((mCalendarView) findViewById(R.id.calendar));
calendarView.markDate(2015, 10, 7);
Below function will let you specify a customized hightlight style and color.
mCalendarView calendarView = ((mCalendarView) findViewById(R.id.calendar));
new DateData(2016, 3, 1).setMarkStyle(new MarkStyle(MarkStyle.DOT, Color.GREEN)

Use built-in Mark Styles

mCalendarView provide below built-in mark styles. Mark styles are defined in class MarkStyle.
  • Change Background Color.
  • Add a dot under date text.
  • Add a colored vertical bar on the left side of date text.
  • Add a colored vertical bar on the right side of date text.
To specify the default / global highlight style, use setMarkedStyle(int style) function in mCalendarView.
mCalendarView calendarView = ((mCalendarView) findViewById(R.id.calendar));
Default highlight style is change background color. To specify the default / global highlight style and color, use setMarkedStyle(int style, int color) function in mCalendarView. To specify a highlight style and color for one day, use setMarkStyle(MarkStyle markStyle) function in DateData. You can get screenshots of each mark styles in More ScreenShots Section

Use Customize Date Cell

mCalendarView allows you using your own views for date cells, but there are some restrictions.
  • Your customized view must extend BaseCellView, which inherit from LinearLayout.
  • Your customized view must implement setDisplayText. This function will be called when mCalendarView need to display something in the cell. Usually it's date number or day of week ('Sun', 'Mon'...'Sat').
      public class DateCellView extends BaseCellView {
    public DateCellView(Context context) {
    public DateCellView(Context context, AttributeSet attrs) {
    super(context, attrs);
    public void setDisplayText(String text) {
    ((TextView) this.findViewById(R.id.id_cell_text)).setText(text);
  • Create a layout xml in your project which root node is your customized view. For example, I created a layout_date_cell.xml in the sample project.
      <?xml version="1.0" encoding="utf-8"?>
  • Build your view and pass its id to mCalendarView by calling setDateCell(int dateCellResId).
      mCalendarView calendarView = ((mCalendarView) findViewById(R.id.calendar));

Use Customized Mark Cell

mCalendar allows you using your own views for marked / highlighted date cells. To use this feature, your view need to extend BaseMarkView. The rest parts are the same with Use Customized Date Cell.

Set OnMonthChangeListener

OnMonthChangeListener is an abstract class and will be invoked when user sliding right or left to change month. It will provide value of current year and month as parameter.
public abstract void onMonthChange(int year, int month);
To set an OnMonthChangeListener, extend this class and call setOnMonthChangeListener(OnMonthChangeListener l) function in mCalendarView.
calendarView.setOnMonthChangeListener(new OnMonthChangeListener() {
public void onMonthChange(int year, int month) {
Toast.makeText(MainActivity.this, String.format("%d-%d", year, month), Toast.LENGTH_SHORT).show();

Set OnDateClickListener

OnDateClickListener is an abstract class and will be invoked when use click on date cells. It will provide a DateData as parameter.
public abstract void onDateClick(View view,DateData date);
To set an OnDateClickListener, extend this class and call setOnDateClickListener(OnDateClickListener l) function in mCalendarView.
calendarView.setOnDateClickListener(new OnDateClickListener() {
public void onDateClick(View view, DateData date) {
Toast.makeText(MainActivity.this, String.format("%d-%d", date.getMonth(), date.getDay()), Toast.LENGTH_SHORT).show();

Expand & Shrink


More Screenshots











For Expandabel calendar view.

oong & Barry

For bug fix.

Rodrigo Arantes

For WeekColumnView Translate in ExpCalendarView.

APPs which using mCalendarView

Natural Family Planning (NFP)



Copyright 2015 Bob Sun 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. See LICENSE file for details.