react-native-vision-camera-zxing/lib/module/hooks/useCameraDevices.js

A powerful, high-performance React Native Camera library.

import { useEffect, useState } from 'react';
import { CameraDevices } from '../CameraDevices';

/**
 * Get all available Camera Devices this phone has.
 *
 * Camera Devices attached to this phone (`back` or `front`) are always available,
 * while `external` devices might be plugged in or out at any point,
 * so the result of this function might update over time.
 */
export function useCameraDevices() {
  const [devices, setDevices] = useState(() => CameraDevices.getAvailableCameraDevices());
  useEffect(() => {
    const listener = CameraDevices.addCameraDevicesChangedListener(newDevices => {
      setDevices(newDevices);
    });
    return () => listener.remove();
  }, []);
  return devices;
}
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