React Native Timer Picker ⏰🕰️⏳

A simple, flexible, performant duration picker component for React Native apps 🔥

Great for timers, alarms and duration inputs.

Works with Expo and bare React Native apps.

• Demos 📱
• Peer Dependencies 👶
• Installation 🚀
• Examples 😎
  • Timer Picker Modal (Dark Mode) 🌚
  • Timer Picker Modal (Light Mode) 🌞
  • Timer Picker with Customisation (Dark Mode) 🌒
  • Timer Picker with Customisation (Light Mode) 🌔
• Props 💅
  • TimerPicker ⏲️
    • Custom Styles 👗
  • TimerPickerModal ⏰
    • Custom Styles 👕
• Methods 🔄
  • TimerPicker
  • TimerPickerModal
• Contributing 🧑‍🤝‍🧑
  • Dev Setup
  • GitHub Guidelines
• License 📝

Demos 📱

Try it out for yourself on Expo Snack! Make sure to run it on a mobile to see it working properly.

Peer Dependencies 👶

This component will work in your React Native Project without any peer dependencies.

If you want the numbers to fade in/out at the top and bottom of the picker, you will need to install either:

• expo-linear-gradient (if using Expo)
• react-native-linear-gradient (if using in a bare React Native project)

To enable the linear gradient, you need to supply the component as a prop to either TimerPickerModal or TimerPicker.

Installation 🚀

Supports React Native >= 0.59.0 and React >= 16.8.0.

Just run:

npm install react-native-timer-picker

or

yarn add react-native-timer-picker

Examples 😎

Timer Picker Modal (Dark Mode) 🌚

import { TimerPickerModal } from "react-native-timer-picker";
import { LinearGradient } from "expo-linear-gradient"; // or `import LinearGradient from "react-native-linear-gradient"`

....
const [showPicker, setShowPicker] = useState(false);
const [alarmString, setAlarmString] = useState<
        string | null
    >(null);

return (
    <View style={{backgroundColor: "#514242", alignItems: "center", justifyContent: "center"}}>
        <Text style={{fontSize: 18, color: "#F1F1F1"}}>
            {alarmStringExample !== null
                ? "Alarm set for"
                : "No alarm set"}
        </Text>
        <TouchableOpacity
            activeOpacity={0.7}
            onPress={() => setShowPicker(true)}>
            <View style={{alignItems: "center"}}>
                {alarmString !== null ? (
                    <Text style={{color: "#F1F1F1", fontSize: 48}}>
                        {alarmString}
                    </Text>
                ) : null}
                <TouchableOpacity
                    activeOpacity={0.7}
                    onPress={() => setShowPicker(true)}>
                    <View style={{marginTop: 30}}>
                        <Text
                            style={{
                                paddingVertical: 10,
                                paddingHorizontal: 18,
                                borderWidth: 1,
                                borderRadius: 10,
                                fontSize: 16,
                                overflow: "hidden",
                                borderColor: "#C2C2C2",
                                color: "#C2C2C2"
                                }}>
                            Set Alarm 🔔
                        </Text>
                    </View>
                </TouchableOpacity>
            </View>
        </TouchableOpacity>
        <TimerPickerModal
            visible={showPicker}
            setIsVisible={setShowPicker}
            onConfirm={(pickedDuration) => {
                setAlarmString(formatTime(pickedDuration));
                setShowPicker(false);
            }}
            modalTitle="Set Alarm"
            onCancel={() => setShowPicker(false)}
            closeOnOverlayPress
            LinearGradient={LinearGradient}
            styles={{
                theme: "dark",
            }}
            modalProps={{
                overlayOpacity: 0.2,
            }}
        />
    </View>
)

Timer Picker Modal (Light Mode) 🌞

import { TimerPickerModal } from "react-native-timer-picker";
import { LinearGradient } from "expo-linear-gradient"; // or `import LinearGradient from "react-native-linear-gradient"`

....
const [showPicker, setShowPicker] = useState(false);
const [alarmString, setAlarmString] = useState<
        string | null
    >(null);

return (
    <View style={{backgroundColor: "#F1F1F1", alignItems: "center", justifyContent: "center"}}>
        <Text style={{fontSize: 18, color: "#202020"}}>
            {alarmStringExample !== null
                ? "Alarm set for"
                : "No alarm set"}
        </Text>
        <TouchableOpacity
            activeOpacity={0.7}
            onPress={() => setShowPicker(true)}>
            <View style={{alignItems: "center"}}>
                {alarmString !== null ? (
                    <Text style={{color: "#202020", fontSize: 48}}>
                        {alarmString}
                    </Text>
                ) : null}
                <TouchableOpacity
                    activeOpacity={0.7}
                    onPress={() => setShowPicker(true)}>
                    <View style={{marginTop: 30}}>
                        <Text
                            style={{paddingVertical: 10,
                            paddingHorizontal: 18,
                            borderWidth: 1,
                            borderRadius: 10,
                            fontSize: 16,
                            overflow: "hidden",
                            borderColor: "#8C8C8C",
                            color: "#8C8C8C"
                            }}>
                            Set Alarm 🔔
                        </Text>
                    </View>
                </TouchableOpacity>
            </View>
        </TouchableOpacity>
        <TimerPickerModal
            visible={showPicker}
            setIsVisible={setShowPicker}
            onConfirm={(pickedDuration) => {
                setAlarmString(formatTime(pickedDuration));
                setShowPicker(false);
            }}
            modalTitle="Set Alarm"
            onCancel={() => setShowPicker(false)}
            closeOnOverlayPress
            use12HourPicker
            LinearGradient={LinearGradient}
            styles={{
                theme: "light",
            }}
        />
    </View>
)

Timer Picker with Customisation (Dark Mode) 🌒

import { TimerPicker } from "react-native-timer-picker";
import { LinearGradient } from "expo-linear-gradient"; // or `import LinearGradient from "react-native-linear-gradient"`

....
const [showPicker, setShowPicker] = useState(false);
const [alarmString, setAlarmString] = useState<
        string | null
    >(null);

return (
    <View style={{backgroundColor: "#202020", alignItems: "center", justifyContent: "center"}}>
        <TimerPicker
            padWithNItems={2}
            hourLabel=":"
            minuteLabel=":"
            secondLabel=""
            LinearGradient={LinearGradient}
            styles={{
                theme: "dark",
                backgroundColor: "#202020",
                pickerItem: {
                    fontSize: 34,
                },
                pickerLabel: {
                    fontSize: 32,
                    marginTop: 0,
                },
                pickerContainer: {
                    marginRight: 6,
                },
                pickerItemContainer: {
                    width: 100
                },
                pickerLabelContainer: {
                    right: -20,
                    top: 0,
                    bottom: 6,
                    width: 40,
                    alignItems: "center",
                },
            }}
        />
    </View>
)

Timer Picker with Customisation (Light Mode) 🌔

import { TimerPicker } from "react-native-timer-picker";
import { LinearGradient } from "expo-linear-gradient"; // or `import LinearGradient from "react-native-linear-gradient"`

....
const [showPicker, setShowPicker] = useState(false);
const [alarmString, setAlarmString] = useState<
        string | null
    >(null);

return (
    <View style={{backgroundColor: "#F1F1F1", alignItems: "center", justifyContent: "center"}}>
        <TimerPicker
            padWithNItems={3}
            hideHours
            minuteLabel="min"
            secondLabel="sec"
            LinearGradient={LinearGradient}
            styles={{
                theme: "light",
                pickerItem: {
                    fontSize: 34,
                },
                pickerLabel: {
                    fontSize: 26,
                    right: -20,
                },
                pickerLabelContainer: {
                    width: 60,
                },
                pickerItemContainer: {
                    width: 150,
                },
            }}
        />
    </View>
)

Props 💅

TimerPicker ⏲️

| Prop | Description | Type | Default | Required | | :------------------------------: | :------------------------------------------------------------------------------ | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------: | :-----: | :------: | | onDurationChange | Callback when the duration changes | (duration: { hours: number, minutes: number, seconds: number }) => void | - | false | | initialHours | Initial value for hours | Number | - | false | | initialMinutes | Initial value for minutes | Number | - | false | | initialSeconds | Initial value for seconds | Number | - | false | | hideHours | Hide the hours picker | Boolean | false | false | | hideMinutes | Hide the minutes picker | Boolean | false | false | | hideSeconds | Hide the seconds picker | Boolean | false | false | | hoursPickerIsDisabled | Disable the hours picker picker | Boolean | false | false | | minutesPickerIsDisabled | Disable the minutes picker picker | Boolean | false | false | | secondsPickerIsDisabled | Disable the seconds picker picker | Boolean | false | false | | hourLimit | Limit on the hours it is possible to select | { max?: Number, min?: Number } | - | false | | minuteLimit | Limit on the minutes it is possible to select | { max?: Number, min?: Number } | - | false | | secondLimit | Limit on the seconds it is possible to select | { max?: Number, min?: Number } | - | false | | hourLabel | Label for the hours picker | String | React.ReactElement | h | false | | minuteLabel | Label for the minutes picker | String | React.ReactElement | m | false | | secondLabel | Label for the seconds picker | String | React.ReactElement | s | false | | padWithNItems | Number of items to pad the picker with on either side | Number | 1 | false | | aggressivelyGetLatestDuration | Set to True to ask DurationScroll to aggressively update the latestDuration ref | Boolean | false | false | | allowFontScaling | Allow font in the picker to scale with accessibility settings | Boolean | false | false | | use12HourPicker | Switch the hour picker to 12-hour format with an AM / PM label | Boolean | false | false | | amLabel | Set the AM label if using the 12-hour picker | String | am | false | | pmLabel | Set the PM label if using the 12-hour picker | String | pm | false | | disableInfiniteScroll | Disable the infinite scroll feature | Boolean | false | false | | LinearGradient | Linear Gradient Component | expo-linear-gradient.LinearGradient or react-native-linear-gradient.default | - | false | | pickerContainerProps | Props for the picker container | React.ComponentProps<typeof View> | - | false | | pickerGradientOverlayProps | Props for both gradient overlays | Partial<LinearGradientProps> | - | false | | topPickerGradientOverlayProps | Props for the top gradient overlay | Partial<LinearGradientProps> | - | false | | bottomPickerGradientOverlayProps | Props for the bottom gradient overlay | Partial<LinearGradientProps> | - | false | | styles | Custom styles for the timer picker | CustomTimerPickerStyles | - | false |

Custom Styles 👗

The following custom styles can be supplied to re-style the component in any way. Various styles are applied by default - you can take a look at these here.

| Style Prop | Description | Type | | :---------------------: | :------------------------------------------- | :---------------: | | theme | Theme of the component | "light" | "dark" | | backgroundColor | Main background color | string | | text | Base text style | TextStyle | | pickerContainer | Main container for the picker | ViewStyle | | pickerLabelContainer | Container for the picker's labels | ViewStyle | | pickerLabel | Style for the picker's labels | TextStyle | | pickerAmPmContainer | Style for the picker's labels | ViewStyle | | pickerAmPmLabel | Style for the picker's labels | TextStyle | | pickerItemContainer | Container for each number in the picker | ViewStyle | | pickerItem | Style for each individual picker number | TextStyle | | disabledPickerItem | Style for any numbers outside any set limits | TextStyle | | disabledPickerContainer | Style for disabled pickers | ViewStyle | | pickerGradientOverlay | Style for the gradient overlay (fade out) | ViewStyle |

TimerPickerModal ⏰

The TimerPickerModal component accepts all TimerPicker props, and the below additional props.

| Prop | Description | Type | Default | Required | | :-------------------------: | :---------------------------------------------------- | :------------------------------------------------------------------------------------------: | :-----: | :------: | | visible | Determines if the modal is visible | Boolean | - | true | | setIsVisible | Callback to set modal visibility | (isVisible: boolean) => void | - | true | | onConfirm | Callback when the user confirms the selected time | ({ hours, minutes, seconds }: { hours: number, minutes: number, seconds: number }) => void | - | true | | onCancel | Callback when the user cancels the selection | () => void | - | false | | closeOnOverlayPress | Determines if the modal should close on overlay press | Boolean | false | false | | hideCancelButton | Hide the cancel button within the modal | Boolean | false | false | | confirmButtonText | Text for the confirm button | String | Confirm | false | | cancelButtonText | Text for the cancel button | String | Cancel | false | | modalTitle | Title text for the modal | String | - | false | | modalProps | Props for the main modal component | React.ComponentProps<typeof Modal> | - | false | | containerProps | Props for the main container | React.ComponentProps<typeof View> | - | false | | contentContainerProps | Props for the content container | React.ComponentProps<typeof View> | - | false | | buttonContainerProps | Props for the button containers | React.ComponentProps<typeof View> | - | false | | buttonTouchableOpacityProps | Props for the button touchable opacities | React.ComponentProps<typeof TouchableOpacity> | - | false | | modalTitleProps | Props for the modal title text component | React.ComponentProps<typeof Text> | - | false | | styles | Custom styles for the timer picker modal | CustomTimerPickerModalStyles | - | false |

Custom Styles 👕

The following custom styles can be supplied to re-style the component in any way. You can also supply all of the styles specified in CustomTimerPickerStyles. Various styles are applied by default - you can take a look at these here.

| Style Prop | Description | Type | | :--------------: | :----------------------------------------- | :-------: | | container | Main container's style | ViewStyle | | contentContainer | Style for the content's container | ViewStyle | | buttonContainer | Style for the container around the buttons | ViewStyle | | button | General style for both buttons | TextStyle | | cancelButton | Style for the cancel button | TextStyle | | confirmButton | Style for the confirm button | TextStyle | | modalTitle | Style for the title of the modal | TextStyle |

Methods 🔄

TimerPicker

The library exposes a TimerPickerRef type, which can be used to type your ref to the picker:

const timerPickerRef = useRef < TimerPickerRef > null;

It has the following available methods:

reset - imperative method to reset the selected duration to their initial values.

timerPickerRef.current.reset(options?: { animated: boolean });

setValue - imperative method to set the selected duration to a particular value

timerPickerRef.current.setValue({ hours: number, minutes: number, seconds: number }, options?: { animated: boolean });

It also exposes the following ref object:

latestDuration - provides access to the latest duration (even during scrolls). This only works if aggressivelyGetLatestDuration is set to True (as in TimerPickerModal). It is used internally to ensure that the latest duration is returned in TimerPickerModal on pressing the confirm button, even if the inputs are still scrolling.

const latestDuration = timerPickerRef.current?.latestDuration;
const newDuration = {
    hours: latestDuration?.hours?.current,
    minutes: latestDuration?.minutes?.current,
    seconds: latestDuration?.seconds?.current,
};

TimerPickerModal

An identical ref is also exposed for the TimerPickerModal component.

Contributing 🧑‍🤝‍🧑

Contributions to this project are more than welcome.

Dev Setup

To get this project running locally:

1. Clone the Git repo.
2. Run yarn setup from the project root (this installs the dev dependencies and the example's additional dependencies)
3. Run yarn start to start the example in Expo Go.
4. Start adding cool stuff! Your changes should be immediately reflected in the Expo Go app.

GitHub Guidelines

There are two permenant branches: main and develop. You should never work directly on either of these branches.

1. Create a new branch off develop for your work using the pattern feature/{DESCRIPTION}.
2. When you think your work is ready for review, submit a PR from your branch back to develop.
3. Once the PR is resolved, your work will be merged into develop, and will be included in the next major/minor release.

License 📝

This project is licensed under the MIT License.