摄像头在android应用React Native中不起作用的权限

npm install react-native-permissions --save

import { PermissionsAndroid } from 'react-native';
import { check, request, PERMISSIONS, RESULTS } from 'react-native-permissions';

const checkCameraPermission = async () => {
  const permissionStatus = await check(PERMISSIONS.ANDROID.CAMERA);
  if (permissionStatus === RESULTS.GRANTED) {
    // 权限已授予，可以使用摄像头
  } else {
    // 权限未授予，需要请求权限
    requestCameraPermission();
  }
};

const requestCameraPermission = async () => {
  try {
    const granted = await PermissionsAndroid.request(
      PermissionsAndroid.PERMISSIONS.CAMERA,
      {
        title: 'Camera Permission',
        message: 'App needs access to your camera',
        buttonPositive: 'OK',
        buttonNegative: 'Cancel',
      },
    );
    if (granted === PermissionsAndroid.RESULTS.GRANTED) {
      // 权限已授予，可以使用摄像头
    } else {
      // 权限被拒绝，无法使用摄像头
    }
  } catch (error) {
    console.warn(error);
  }
};

<uses-permission android:name="android.permission.CAMERA" />