mui实现扫码并返回信息
时间: 2023-08-15 12:09:51 浏览: 34
要实现扫码并返回信息,可以使用 `react-native-camera` 和 `react-native-qrcode-scanner` 这两个库。
首先,安装这两个库:
```bash
npm install react-native-camera react-native-qrcode-scanner --save
```
然后,引入这两个库:
```jsx
import React, { Component } from 'react';
import { StyleSheet, Text, View } from 'react-native';
import QRCodeScanner from 'react-native-qrcode-scanner';
import { RNCamera } from 'react-native-camera';
```
接下来,在 `render` 方法中添加一个 `QRCodeScanner` 组件:
```jsx
render() {
return (
<QRCodeScanner
onRead={this.onSuccess.bind(this)}
flashMode={RNCamera.Constants.FlashMode.torch}
topContent={
<Text style={styles.centerText}>
Go to{' '}
<Text style={styles.textBold}>wikipedia.org/wiki/QR_code</Text> on
your computer and scan the QR code.
</Text>
}
bottomContent={
<TouchableOpacity style={styles.buttonTouchable}>
<Text style={styles.buttonText}>OK. Got it!</Text>
</TouchableOpacity>
}
/>
);
}
```
在 `onSuccess` 方法中,可以获取到扫描得到的信息:
```jsx
onSuccess(e) {
console.log(e.data);
}
```
完整示例代码:
```jsx
import React, { Component } from 'react';
import { StyleSheet, Text, View, TouchableOpacity } from 'react-native';
import QRCodeScanner from 'react-native-qrcode-scanner';
import { RNCamera } from 'react-native-camera';
export default class App extends Component {
onSuccess(e) {
console.log(e.data);
}
render() {
return (
<QRCodeScanner
onRead={this.onSuccess.bind(this)}
flashMode={RNCamera.Constants.FlashMode.torch}
topContent={
<Text style={styles.centerText}>
Go to{' '}
<Text style={styles.textBold}>wikipedia.org/wiki/QR_code</Text> on
your computer and scan the QR code.
</Text>
}
bottomContent={
<TouchableOpacity style={styles.buttonTouchable}>
<Text style={styles.buttonText}>OK. Got it!</Text>
</TouchableOpacity>
}
/>
);
}
}
const styles = StyleSheet.create({
centerText: {
flex: 1,
fontSize: 18,
padding: 32,
color: '#777',
},
textBold: {
fontWeight: '500',
color: '#000',
},
buttonText: {
fontSize: 21,
color: 'rgb(0,122,255)',
},
buttonTouchable: {
padding: 16,
},
});
```