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react-native-animated-stopwatch-timer
Advanced tools
React Native Stopwatch component that smoothly animates the digits change
A React Native Stopwatch/Timer component that empowers reanimated worklets to smoothly animate the digit change. Cross-platform, performant, with all layout animations executed on the UI thread at 60FPS. Compatible with Expo.
https://user-images.githubusercontent.com/4982414/212443504-7c46a701-7e13-4504-8b39-88499fb17752.mp4
🧑💻 Run the snack example app to see it in action. The source code for the example is under the /example folder.
npm install react-native-animated-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.
You can use this component in two different modes:
mode
prop and set it to "timer"
.import { useRef } from 'react';
import StopwatchTimer, {
StopwatchTimerMethods,
} from 'react-native-animated-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} />;
};
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) |
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 |
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.
See the contributing guide to learn how to contribute to the repository and the development workflow.
MIT © Raul Gomez Acuna
If you found this project interesting, please consider following me on twitter
FAQs
React Native Stopwatch component that smoothly animates the digits change
The npm package react-native-animated-stopwatch-timer receives a total of 171 weekly downloads. As such, react-native-animated-stopwatch-timer popularity was classified as not popular.
We found that react-native-animated-stopwatch-timer demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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