Joh*_*n B 3 typescript reactjs material-ui
我有以下测试代码(按照Material UI打字稿文档中的指南进行操作)
import * as React from 'react';
import { Theme } from '@material-ui/core/styles/createMuiTheme';
import { WithStyles } from '@material-ui/core';
import { createStyles } from '@material-ui/core/styles';
import Drawer from '@material-ui/core/Drawer';
const drawerWidth = 240;
const styles = (theme: Theme) => createStyles({
root: {
flexGrow: 1,
height: 430,
zIndex: 1,
overflow: 'hidden',
position: 'relative',
display: 'flex',
},
appBar: {
zIndex: theme.zIndex.drawer + 1,
},
drawerPaper: {
position: 'relative',
width: drawerWidth,
},
content: {
flexGrow: 1,
backgroundColor: theme.palette.background.default,
padding: theme.spacing.unit * 3,
minWidth: 0,
},
toolbar: theme.mixins.toolbar,
});
interface Props extends WithStyles<typeof styles> {}
interface State {}
export class Sidebar extends React.Component<Props, State> {
render() {
const { classes } = this.props;
return (
<Drawer
style={{position: 'relative', width: drawerWidth}}
variant='permanent'
classes={{
paper: classes.drawerPaper,
}}
>
<div className={classes.toolbar} />
</Drawer>
);
}
}
export default Sidebar;
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现在,如果我尝试通过以下方式在其他地方使用此组件:
import * as React from 'react';
import Grid from '@material-ui/core/Grid';
import Sidebar from './Sidebar';
export class Main extends React.Component {
public render() {
return (
<Grid container>
<Grid container item xs={12}>
<Sidebar />
</Grid>
</Grid>
);
}
}
export default Main;
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我收到了classesMain组件和cannot read property drawerPaper of undefinedSideBar组件内缺少的错误。我extend WithStyles<typeof styles>以为可以解决该问题,但是在尝试导入和使用该SideBar组件时仍然无济于事。我对Material UI主题的经验很少,因此非常感谢您提供任何指导。
您尚未将样式附加到组件。在您创建的样式与其余代码之间,代码之间没有任何联系。
为此,您需要使用HOC withStyles。而不export default Sidebar;只是做export default withStyles(styles)(Sidebar);
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