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react-native-updated-stopwatch-timer

v1.3.1

Published

React Native Stopwatch component that smoothly animates the digits change

Downloads

13

Readme

react-native-animated-stopwatch-timer

npm npm bundle size platforms: ios, android, web license MIT

Updates

  • Added hour option to the timer (looks better trailingZeros set to 0)
  • Added auto start type

How it is built

Want to learn about the inner workings? Check out this deep dive that delves into the beauty of custom layout animations: Custom Layout Animations with Reanimated

Features

  • :fire: Performant: all digit animations are executed on the UI thread
  • :gear: Highly configurable: easily control its behaviour via props, like animation parameters and styles
  • :watch: Dual mode: use it as a stopwatch or timer
  • :iphone: Expo compatible: no need to eject to enjoy this component
  • :hammer_and_wrench: Type safe: fully written in TS
  • :computer: Snack example: a snack link is provided so you can try it out in your browser

Preview

https://user-images.githubusercontent.com/4982414/212443504-7c46a701-7e13-4504-8b39-88499fb17752.mp4

Try it out

The source code for the example is under the /example folder.

Installation

npm install @umar4911/react-native-updated-stopwatch-timer

You also need to install react-native-reanimated 2.5.x or higher.

npm install react-native-reanimated

If you are installing reanimated on a bare React Native app, you should also follow these additional installation instructions.

Modes

You can use this component in two different modes:

  • Stopwatch: The timer starts counting up from 0 (default).
  • Timer: The timer starts counting down from a given time. Use the mode prop and set it to "timer".

Usage

import { useRef } from 'react';
import StopwatchTimer, {
  StopwatchTimerMethods,
} from 'react-native-updated-stopwatch-timer';

const App = () => {
  const stopwatchTimerRef = useRef<StopwatchTimerMethods>(null);

  // Methods to control the stopwatch
  function play() {
    stopwatchTimerRef.current?.play();
  }

  function pause() {
    stopwatchTimerRef.current?.pause();
  }

  function reset() {
    stopwatchTimerRef.current?.reset();
  }

  return <StopwatchTimer ref={stopwatchTimerRef} />;
};

Props

| Name | Required | Type | Description | | -------------------- | -------- | ---------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | mode | no | stopwatch or timer | Whether the component should work as a stopwatch or as a timer. Defaults to stopwatch | | initialTimeInMs | no | number | Initial time in miliseconds | | onFinish | no | () => void | Callback executed when the timer reaches 0 (only when working in timer mode and initialTimeInMs prop is provided) | | needHour | no | () => void | Adds hour to the stopwatch too | | trailingZeros | no | 0, 1 or 2 | If 0, the component will only display seconds and minutes. If 1, the component will display seconds, minutes, and a hundredth of ms. If 2, the component will display seconds, minutes, and tens of ms. Defaults to 1 | | animationDuration | no | number | The enter/exit animation duration in milliseconds of a digit. Defaults to 80 | | animationDelay | no | number | The enter/exit animation delay in milliseconds of a digit. Defaults to 0 | | animationDistance | no | number | The enter/exit animation vertical distance in dp of a digit. Defaults to 120 | | containerStyle | no | StyleProp<ViewStyle> | The style of the stopwatch/timer View container | | digitStyle | no | StyleProp<TextStyle> | Extra style applied to each digit, excluding separators (: and ,). This property is useful if the fontFamily has different widths per digit to avoid an unpleasant fluctuation of the total component width as it runs. Check the example app where this is used on iOS's default San Francisco font, which presents this issue. | | leadingZeros | no | 1 or 2 | The number of zeros for the minutes. Defaults to 1 | | enterAnimationType | no | 'slide-in-up' or 'slide-in-down' | Whether the new digit should enter from the top or the bottom | | separatorStyle | no | StyleProp<TextStyle> | Extra style applied only to separators. In this case, the colon (:) and the comma (,) | | textCharStyle | no | StyleProp<TextStyle> | The style applied to each individual character of the stopwatch/timer | | decimalSeparator | no | string | Decimal separator for formatting time. Defaults to a comma , | | intervalMs | no | number | The interval in milliseconds to update the stopwatch/timer. Defaults to 16 |

Methods

play: () => void

Starts the stopwatch/timer or resumes it if paused. It has no effect if it's already running.

stopwatchTimerRef.current?.play();

pause: () => number

Pauses the stopwatch/timer. It has no effect if it is either paused or reset. The method returns a snapshot of the time elapsed in ms.

stopwatchTimerRef.current?.pause();

reset: () => void

Resets the stopwatch/timer.

stopwatchTimerRef.current?.reset();

getSnapshot: () => number

Returns the current time elapsed in ms.

stopwatchTimerRef.current?.getSnapshot();

stopwatchTimerRef refers to the ref passed to the StopwatchTimer component.

Contributing

See the contributing guide to learn how to contribute to the repository and the development workflow.

License

MIT © Raul Gomez Acuna

If you found this project interesting, please consider following me on twitter