探索前沿科技：React Native百度相机OCR扫描组件

import React, { useState } from 'react';
import { StyleSheet, Text, View, Button } from 'react-native';
import RNCamera from 'react-native-camera';
import BaiduOCR, { RecognizeType } from 'react-native-baidu-ocr';
 
export default function App() {
  const [cameraType, setCameraType] = useState(RNCamera.Constants.Type.back);
 
  const onBarCodeRead = ({ data }) => console.log('Bar code: ', data);
 
  const toggleCamera = () => {
    setCameraType(cameraType === RNCamera.Constants.Type.back
      ? RNCamera.Constants.Type.front
      : RNCamera.Constants.Type.back);
  };
 
  const recognizeText = async () => {
    const result = await BaiduOCR.recognizeText({
      image: {
        data: {
          path: 'path_to_image', // 替换为图片路径
          mode: BaiduOCR.ImageMode.origin,
        },
        camera: {
          type: cameraType,
        },
      },
      recognizeType: RecognizeType.detect,
    });
    console.log('OCR Result: ', result);
  };
 
  return (
    <View style={styles.container}>
      <RNCamera
        style={styles.preview}
        type={cameraType}
        onBarCodeRead={onBarCodeRead}
      />
      <View style={styles.buttonContainer}>
        <Button title="切换摄像头" onPress={toggleCamera} />
        <Button title="识别文本" onPress={recognizeText} />
      </View>
    </View>
  );
}
 
const styles = StyleSheet.create({
  container: {
    flex: 1,
    flexDirection: 'column',
    backgroundColor: 'black',
  },
  preview: {
    flex: 1,
    justifyContent: 'flex-end',
    alignItems: 'center',
  },
  buttonContainer: {
    flex: 1,
    backgroundColor: 'transparent',
    flexDirection: 'row',
    justifyContent: 'center',
    alignItems: 'center',
  },
});

这段代码展示了如何使用React Native和百度OCR服务来实现一个简单的文本识别应用。它包括了摄像头预览、切换摄像头和识别文本功能。需要注意的是，该代码只是一个示例，并且需要实现必要的依赖和API密钥配置。