React Native Swipe Calendar

A swipeable calendar component for React Native.
Fully native interactions powered by Reanimated 2 and React Native Gesture Handler.

Install

1. Follow installation instructions for reanimated and react-native-gesture-handler
2. npm install or yarn add react-native-swipe-calendar
3. import Calendar from 'react-native-swipe-calendar'

Props

type HeaderComponent = (props: { date: Date }) => JSX.Element | null;

type DayLabelComponentType = (props: { date: Date }) => JSX.Element | null;

type DayComponentType = (props: {
  date: Date;
  isInDisplayedMonth: boolean;
  isSelected: boolean;
  isToday: boolean;
}) => JSX.Element | null;

export type WeekComponentType = (props: {
  days: Date[];
}) => JSX.Element | null;

export type MonthComponentType = (props: {
  weeks: Date[][];
  firstDayOfMonth: Date;
}) => JSX.Element | null;

export type PageInterval = "day" | "week" | "month";

export type CalendarProps = {
  selectedDate?: Date | null; 
  onDateSelect?: OnDateSelect;
  onPageChange?: (date: Date) => void;
  currentDate?: Date;
  HeaderComponent?: HeaderComponentType;
  DayLabelComponent?: DayLabelComponentType;
  DayComponent?: DayComponentType;
  WeekComponent?: WeekComponentType;
  MonthComponent?: MonthComponentType;
  theme?: Partial<typeof DEFAULT_THEME>;
  pageBuffer?: number;
  minDate?: Date;
  maxDate?: Date;
  pageInterpolator?: CalendarPageInterpolator;
  simultaneousGestures?: (ComposedGesture | GestureType)[];
  monthAnimCallbackNode?: Animated.SharedValue<number>;
  gesturesDisabled?: boolean;
  animationConfig?: Partial<WithSpringConfig>;
  weekStartsOn?: WeekDayIndex;
  pageInterval?: PageInterval;
};

Name	Type	Description
selectedDate	`Date	null`
onDateSelect	(date: Date) => void	Callback invoked when the a date is selected.
onPageChange	(date: Date) => void	Callback invoked when the month is changed.
currentDate	Date	Date to initialize the calendar with.
theme	Partial<typeof DEFAULT_THEME>	Overrides for default fonts and colors.
HeaderComponent	HeaderComponentType	Custom replacement for Header component.
DayComponent	DayComponentType	Custom replacement for Day compoent.
WeekComponent	WeekComponentType	Custom replacement for Week compoent.
MonthComponent	MonthComponentType	Custom replacement for Month compoent.
DayLabelComponent	DayLabelComponentType	Custom replacement for Day Label component ("Su", "Mo", etc).
minDate	Date	The minimum date the calendar will display
maxDate	Date	The maximum date the calendar will display
pageInterpolator	typeof defaultPageInterpolator	A worklet to customize page transition animations. Returns an animated style
animationConfig	Partial<WithSpringConfig>	An animation spring config object to customize how page transitions animate.
simultaneousGestures	`(ComposedGesture	GestureType)[]`
weekStartsOn	number	Index of the day week starts on.
pageInterval	`"month"	"week"

Imperative Api

Access the imperative api by passing a ref to the Calendar component:

type ImperativeApiOptions = {
  animated?: boolean;
}

type CalendarImperativeApi = {
  incrementPage: (options?: ImperativeApiOptions) => void;
  decrementPage: (options?: ImperativeApiOptions) => void;
  setPage: (date: Date, options?: ImperativeApiOptions) => void;
}

// Example
function MyComponent() {

  const calendarRef = useRef<CalendarImperativeApi>(null)
  const onIncrementButtonPress = () => calendarRef.current?.incrementPage()
  
  return (
    <>
     <Calendar ref={calendarRef} />
     <MyButton onPress={onIncrementButtonPress} />
    </>
  )
}

Name	Type	Description
incrementPage	(options: ImperativeApiOptions) => void	Go to next month.
decrementPage	(options: ImperativeApiOptions) => void	Go to previous month.
setPage	(date: Date, options: ImperativeApiOptions) => void	Go to given month.

Hooks

If you render your own components via DayComponent prop or other custom view, you may need access to more internal state than is available on props. This state may be accessed via the exported useCalendarContext() hook.

NOTE: Be careful about performance! Lots of instances of DayComponent are rendered at any given time. You may need to wrap memoized inner wrappers around your custom components.

type CalendarContextValue = {
  referenceDate: Date,
  selectedDate: Date | null | undefined,
  onDateSelect: OnDateSelect,
  DayComponent:  DayComponentType | undefined,
  WeekComponent:  WeekComponentType | undefined,
  MonthComponent:  MonthComponentType | undefined,
  DayLabelComponent: DayLabelComponentType | undefined,
  HeaderComponent: HeaderComponentType | undefined,
  theme: typeof DEFAULT_THEME,
  pageInterpolator: typeof defaultPageInterpolator,
  weekStartsOn: number,
}

// Example
function MyCustomDayComponent({ date, isSelected }) {
  const { onDateSelect } = useCalendarContext()
  
  // Forward to the `onDateSelect` prop
  const onDayPress = () => onDateSelect(date, { isSelected })
  
  return (
  <TouchableOpacity onPress={onDayPress}>
    <Text>
      {date.getDate()}
    </Text>
  </TouchableOpacity>
  )
}

Custom pageInterpolator

The pageInterpolator prop enables customization of page animations using a Reanimated "worklet" function. For example, the following pageInterpolator will scale up upcoming months and fade in as they enter, then rotate and fade out as they leave:

// Example
function pageInterpolator({ focusAnim }: CalendarPageInterpolatorParams) {
  "worklet"
  
  const inputRange = [-1, 0, 1]
  
  // Ensure the current month has a higher zIndex than the surrounding months
  const zIndex = interpolate(focusAnim.value, inputRange, [0, 99, 0])
  
  // Fade the current month as it enters/leaves focus
  const opacity = interpolate(focusAnim.value, inputRange, [0, 1, 0])
  
  // Rotate the current month as it leaves focus
  const rotationDeg = interpolate(focusAnim.value, inputRange, [360, 0, 0])
  
  // Scale up the incoming month
  const scale = interpolate(focusAnim.value, inputRange, [2, 1, 0.25])
  
  return {
    opacity,
    zIndex,
    transform: [{ rotate: `${rotationDeg}deg` }, { scale }]
  }
}

Example

https://snack.expo.dev/@computerjazz/react-native-swipe-calendar

import React, {
  useState,
  useRef,
} from "react";
import {
  Text,
  View,
  StyleSheet,
  LayoutAnimation,
  TouchableOpacity,
  Platform,
  UIManager,
} from "react-native";
import Calendar from "react-native-swipe-calendar";

if (Platform.OS === "android") {
  UIManager.setLayoutAnimationEnabledExperimental &&
    UIManager.setLayoutAnimationEnabledExperimental(true);
}

export default function App() {

  const [currentDate, setCurrentDate] = useState(new Date());
  const [selectedDate, setSelectedDate] = useState<Date | null>(null);
  const calendarRef = useRef(null);
  
  return (
    <View style={styles.container}>
      <Calendar
        theme={{ todayIndicatorDotColor: "blue" }}
        ref={calendarRef}
        currentDate={currentDate}
        onDateSelect={(date, { isSelected }) => setSelectedDate(isSelected ? null : date )}
        selectedDate={selectedDate}
        onPageChange={(date) => {
          setCurrentDate(date);
          LayoutAnimation.configureNext(LayoutAnimation.Presets.easeInEaseOut);
        }}
      />
      <View style={styles.controlBar}>
        <TouchableOpacity
          style={styles.incDec}
          onPress={() => calendarRef.current?.decrementPage()}
        >
          <Text>{"<"}</Text>
        </TouchableOpacity>
        <TouchableOpacity
          style={styles.incDec}
          onPress={() => calendarRef.current?.incrementPage()}
        >
          <Text>{">"}</Text>
        </TouchableOpacity>
      </View>
    </View>
  );
}

const styles = StyleSheet.create({
  container: { 
    flex: 1, 
    backgroundColor: "white", 
    paddingTop: 100 
  },
  incDec: {
    paddingHorizontal: 20,
    padding: 10,
    backgroundColor: "lightgrey",
    alignItems: "center",
    justifyContent: "center",
    borderRadius: 5,
  },
  controlBar: {
    position: "absolute",
    top: 100,
    left: 0,
    right: 0,
    flexDirection: "row",
    justifyContent: "space-between",
  },
});