React Native QR扫描仪不扫描

Question

我正在尝试为反应原生的android构建一个QR扫描程序。我有以下代码，但它不扫描任何东西。代码中我需要什么才能使它工作？

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import React, { Component } from 'react';

import {
  AppRegistry,
  StyleSheet,
  View,
  Text,
  TouchableHighlight,
  TouchableOpacity,
  Image,
  Button
} from 'react-native';
import BarcodeScanner from 'react-native-barcodescanner';

export default class test extends React.Component {
  constructor(props) {
    super(props);

    this.state = {
      torchMode: 'off',
      cameraType: 'back',
    };
  }

  barcodeReceived(e) {
    console.log('Barcode: ' + e.data);
    console.log('Type: ' + e.type);
  }

  render() {
    return (
      <View style={{flex: 1, flexDirection: 'row'}}>
      <BarcodeScanner
        onBarCodeRead={this.barcodeReceived}
        style={{ flex: 1 }}
        torchMode={this.state.torchMode}
        cameraType={this.state.cameraType}
      />
      </View>
    );
  }
}


AppRegistry.registerComponent('test', () => test);

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How it looks on phone

Answer 1

使用以便您可以对功能进行分类

onBarCodeRead={this.barcodeReceived.bind(this)}

可能这可以帮到你!!