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https://github.com/CleverPumpkin/CrunchyCalendar

A beautiful material calendar with endless scroll, range selection and a lot more!
https://github.com/CleverPumpkin/CrunchyCalendar

android calendar calendar-view custom-view java jcenter kotlin material-calendar material-design range-selection

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A beautiful material calendar with endless scroll, range selection and a lot more!

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README 

        
[![Maven Central](https://maven-badges.herokuapp.com/maven-central/ru.cleverpumpkin/crunchycalendar/badge.svg)](https://maven-badges.herokuapp.com/maven-central/ru.cleverpumpkin/crunchycalendar/)



![alt text](images/Cover.png)



# CrunchyCalendar



A **light**, **powerful** and **easy to use** Calendar Widget with a number out of the box features:

* Infinite vertical scrolling in both directions;

* Setting date boundaries to restrict scrolling inside of a specific time period;

* Single / multiple / range dates selection;

* Pre-selecting dates;

* Color customization;

* Displaying color indicators;

* Setting own custom ItemDecoration;

* Presented as a View subclass which can be displayed everywhere: in Activity, Fragment or Dialog, 

or can be integrated into another custom View.



![alt text](images/calendar.jpg)



## Dependency



This library is available on [Maven Central](https://search.maven.org/artifact/ru.cleverpumpkin/crunchycalendar) (Previously on [jCenter](https://bintray.com/cleverpumpkin/maven/CrunchyCalendar)).



#### Gradle



```

implementation 'ru.cleverpumpkin:crunchycalendar:2.6.1'

```



#### Maven



```xml



  ru.cleverpumpkin

  crunchycalendar

  2.6.1

  pom



```



## Usage



Here's a basic example of Calendar usage.

 

First of all, you should declare `CalendarView` in your layout XML file.



```xml

  

```



Perform Calendar setup in your `Activity` or `Fragment` class.



```kotlin



val calendarView = view.findViewById(R.id.calendar_view)

val calendar = Calendar.getInstance()



// Initial date

calendar.set(2018, Calendar.JUNE, 1)

val initialDate = CalendarDate(calendar.time)



// Minimum available date

calendar.set(2018, Calendar.MAY, 15)

val minDate = CalendarDate(calendar.time)



// Maximum available date

calendar.set(2018, Calendar.JULY, 15)

val maxDate = CalendarDate(calendar.time)



// List of preselected dates that will be initially selected

val preselectedDates: List = getPreselectedDates()



// The first day of week

val firstDayOfWeek = java.util.Calendar.MONDAY



// Set up calendar with all available parameters

calendarView.setupCalendar(

    initialDate = initialDate, 

    minDate = minDate,

    maxDate = maxDate,

    selectionMode = SelectionMode.NONE,

    selectedDates = preselectedDates,

    firstDayOfWeek = firstDayOfWeek,

    showYearSelectionView = true

)

                

```



**Note:** all parameters in `setupCalendar()` method are optional and have default values. 



To handle date click / long click with custom action, you can do this:



```kotlin



// Set date click callback 

calendarView.onDateClickListener = { date ->



    // Do something ... 

    // for example get list of selected dates

    val selectedDates = calendarView.selectedDates 

}



// Set date long click callback 

calendarView.onDateLongClickListener = { date ->



    // Do something ... 

}



```



## Saving and Restoring state  

Calendar takes care of saving and restoring its internal state (selected dates, selection mode, etc.),

so there's no need to save it manually and call `CalendarView.setupCalendar()` method every time, 

when `Activity` or `Fragment` is recreated.



If a Calendar was set up with `CalendarView.setupCalendar()` method **before** restoring state, previous saved 

state will be ignored. 



## Dates Selection

Calendar supports several selection modes: **single**, **multiple** and **range**.



**Note:** You can restrict selection of some dates by implementing your own filtration logic:



```kotlin



// Here we make weekends unavailable for selection

calendarView.dateSelectionFilter = { date ->

    date.dayOfWeek != Calendar.SATURDAY && date.dayOfWeek != Calendar.SUNDAY

}

```



#### Single date selection 

Only one date can be selected at a time.



```kotlin



// Set up calendar with SelectionMode.SINGLE

calendarView.setupCalendar(selectionMode = SelectionMode.SINGLE)



...



// Get selected date or null

val selectedDate: CalendarDate? = calendarView.selectedDate



// Get list with single selected date or empty list

val selectedDates: List = calendarView.selectedDates

```



#### Multiple dates selection 

A number of dates can be selected. Pressing an already selected date will unselect it.



```kotlin



// Set up calendar with SelectionMode.MULTIPLE

calendarView.setupCalendar(selectionMode = SelectionMode.MULTIPLE)



...



// Get all selected dates in order they were added or empty list

val selectedDates: List = calendarView.selectedDates



```



#### Range date selection 

Allows you to select a date range. Previous selected range is cleared when you select another one.



```kotlin



// Set up calendar with SelectionMode.RANGE

calendarView.setupCalendar(selectionMode = SelectionMode.RANGE)



... 



// Get all selected dates in range (includes start and end date) or empty list

val selectedDates: List = calendarView.selectedDates



```



## Color Indicators

The Calendar is able to display simple color indicators (dots) on the date cell.



Color indicator represents as simple interface, which you can implement in your classes.  



```kotlin



interface DateIndicator {

    val date: CalendarDate // indicator date

    val color: Int // indicator color

}



```



Here's an example of setting indicators to display on the Calendar.

 

```kotlin



// Set up calendar

calendarView.setupCalendar()



val indicators: List = getDatesIndicators()



// Set List of indicators that will be displayed on the calendar 

calendarView.datesIndicators = indicators



````



To get all indicators for specific date, you can do this:



```kotlin



// Set date click callback 

calendarView.onDateClickListener = { date ->



    // Get all indicators for the date

    val indicatorsForDate = calendarView.getDateIndicators(date)

    

    // do something ... 

}



```



## Additional text on date cell

The Calendar is able to display additional text on the date cell.



Additional text represents as simple interface, which you can implement in your classes.



```kotlin



interface AdditionalText {

    val date: CalendarDate // text's date

    val text: String // text to display

    val color: Int // text's color

}



```



Here's an example of setting additional text to display on the Calendar.



```kotlin



// Set up calendar

calendarView.setupCalendar()



val additionalTexts: List = generateAdditionalTexts()



// Set List of additional texts that will be displayed on the calendar 

calendarView.datesAdditionalTexts = additionalTexts



````



## Using default or root locale on digits

The Calendar is able to display digits using default or root locale.



```kotlin



// Set true for root locale or false for default locale. If nothing is set default locale will be used.

setUseRootLocale(true)



// Then set up calendar

calendarView.setupCalendar()



````



## View Customization

Calendar appearance open for customization.



#### Styling using XML



Calendar appearance can be customized with XML attributes. Here's an example of applying custom style to change Calendar appearance.



Define your custom style for the Calendar.

```xml



    <item name="android:background">@android:color/white</item>

    <item name="calendar_date_background">@drawable/custom_date_bg_selector</item>

    <item name="calendar_date_text_color">@color/custom_date_text_selector</item>

    <item name="calendar_day_bar_background">@color/custom_calendar_days_bar_background</item>

    <item name="calendar_day_bar_text_color">@color/custom_calendar_days_bar_text_color</item>

    <item name="calendar_day_bar_weekend_text_color">@color/custom_calendar_days_bar_text_color</item>

    <item name="calendar_grid_color">@color/custom_calendar_grid_color</item>

    <item name="calendar_grid_on_selected_dates">false</item>

    <item name="calendar_month_text_color">@color/custom_calendar_month_text_color</item>

    <item name="calendar_year_selection_arrows_color">

        @color/custom_calendar_year_selection_arrows_color

    </item>

    <item name="calendar_year_selection_background">

        @color/custom_calendar_year_selection_background

    </item>

    <item name="calendar_year_selection_text_color">

        @color/custom_calendar_year_selection_text_color

    </item>



```



Apply your custom style.

```xml



```



To define custom styles for all Calendars in your app at once you can do this:

```xml



    <!-- ...snip... -->

    

    <item name="calendarViewStyle">@style/CalendarViewCustomStyle</item>

    

    <!-- ...etc... -->



```



#### Styling using code

You can also set styles and colors programmatically:



```kotlin

 with(calendarView) {

     setDrawGridOnSelectedDates(drawGrid = true)

     setGridColorRes(R.color.custom_calendar_grid_color)

     setYearSelectionBarBackgroundColorRes(R.color.custom_calendar_year_selection_background)

     setYearSelectionBarArrowsColorRes(R.color.custom_calendar_year_selection_arrows_color)

     setYearSelectionBarTextColorRes(R.color.custom_calendar_year_selection_text_color)

     setDaysBarBackgroundColorRes(R.color.custom_calendar_days_bar_background)

     setDaysBarTextColorRes(R.color.custom_calendar_days_bar_text_color)

     setDaysBarWeekendTextColorRes(R.color.custom_calendar_days_bar_text_color)

     setMonthTextColorRes(R.color.custom_calendar_month_text_color)

     setDateCellBackgroundRes(R.drawable.custom_date_bg_selector)

     setDateCellTextColorRes(R.color.custom_date_text_selector)

}

```



If you need to add some custom drawing logic for Calendar, you can implement standard 

`RecyclerView.ItemDecoration` and add it for Calendar using `addCustomItemDecoration()` method.



```kotlin

// Set up calendar

calendarView.setupCalendar()



// Some custom decoration logic 

val customItemDecoration = CustomItemDecoration()



// Add custom item decoration for calendar

calendarView.addCustomItemDecoration(customItemDecoration)



```    



There is an abstract helper class `AbsDateItemDecoration` that you can extend to implement custom 

drawing logic for specific dates cells.



## Sample app

The Sample app is available for download from [Google Play](https://play.google.com/store/apps/details?id=ru.cleverpumpkin.calendar.sample).



## Sketch file



Wouldn’t it be a real pain for your designer to ignore Calendar View in your apps mockups? Or for them to try and explain to you, which colors you should use by adding them to Jira task in _plain text_?



That is lame. That’s why we’ve added a `.sketch`-file to this repository [here](Calendar%20for%20Android.sketch). Have fun!



## License



```



MIT License



Copyright (c) 2018 CleverPumpkin Ltd.



Permission is hereby granted, free of charge, to any person obtaining a copy

of this software and associated documentation files (the "Software"), to deal

in the Software without restriction, including without limitation the rights

to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

copies of the Software, and to permit persons to whom the Software is

furnished to do so, subject to the following conditions:



The above copyright notice and this permission notice shall be included in all

copies or substantial portions of the Software.



THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

SOFTWARE.



```



## Maintainers



![alt text](images/cleverpumpkin.png)



CrunchyCalendar is maintained and developed by [CleverPumpkin](https://cleverpumpkin.ru).