47 lines
1.2 KiB
JavaScript
47 lines
1.2 KiB
JavaScript
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import * as React from 'react';
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import { Dimensions } from 'react-native'; // This is similar to the new useWindowDimensions hook in react-native
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// However, we have a custom implementation to support older RN versions
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export default function useWindowDimensions() {
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const [dimensions, setDimensions] = React.useState(() => {
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// `height` and `width` maybe undefined during SSR, so we initialize them
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const {
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height = 0,
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width = 0
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} = Dimensions.get('window');
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return {
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height,
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width
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};
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});
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React.useEffect(() => {
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const onChange = ({
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window
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}) => {
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const {
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width,
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height
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} = window;
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setDimensions(d => {
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if (width === d.width && height === d.height) {
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return d;
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}
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return {
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width,
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height
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};
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});
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}; // We might have missed an update before the listener was added
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// So make sure to update the dimensions
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onChange({
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window: Dimensions.get('window')
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});
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Dimensions.addEventListener('change', onChange);
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return () => Dimensions.removeEventListener('change', onChange);
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}, []);
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return dimensions;
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}
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//# sourceMappingURL=useWindowDimensions.js.map
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