下面有一些代码,可让我根据窗口大小更改组件的高度。
在重新加载时可以使用,但是我不确定如何实时反映该值。我该怎么办?
更改窗口大小后
数字已更改,但网格高度(带有棕色背景)仍然相同。
// WindowSizeManager.tsx
import React, { createContext, useContext, ReactNode } from 'react';
import { useWindowSize } from 'react-use';
interface IProps {
children: ReactNode;
size?: { width: number; height: number };
}
export const WindowSizeContext = createContext({ width: 0, height: 0 });
const WindowSizeManager = ({ children }: IProps) => {
const size = useWindowSize();
return (
<WindowSizeContext.Provider value={size}>
{children}
</WindowSizeContext.Provider>
);
};
export const useWindowSizeManager = () => {
return useContext(WindowSizeContext);
};
export default WindowSizeManager;
// SomeComponent.tsx
import React from 'react';
import Container from '@material-ui/core/Container';
import { Grid, makeStyles, Theme, createStyles } from '@material-ui/core';
import { height } from '@material-ui/system';
import { useWindowSizeManager } from './WindowSizemanager';
const useStyles = makeStyles((theme: Theme) =>
createStyles({
screen: {
margin: 0,
padding: 0
},
surface: {
backgroundColor: theme.palette.primary.main,
height: useWindowSizeManager().height - 100,
fontSize: '48px'
}
})
);
const SomeComponent: React.FC = props => {
const classes = useStyles(props);
return (
<Container fixed className={classes.screen}>
<Grid container className={classes.surface}>
{useWindowSizeManager().height}
</Grid>
</Container>
);
};
export default SomeComponent;