🎈 React Native Camera Kit

A high performance, fully featured, rock solid
camera library for React Native applications

`	Cross Platform (iOS and Android) Optimized for performance and high photo capture rate QR / Barcode scanning support Camera preview support in iOS simulator

Installation (RN > 0.60)

yarn add react-native-camera-kit

cd ios && pod install && cd ..

Running the example project

• yarn bootstrap
• yarn example ios or yarn example android

APIs

Camera - Base Camera component

import { Camera } from 'react-native-camera-kit';

<Camera
  ref={(ref) => (this.camera = ref)}
  type={CameraType.Back} // front/back(default)
  style={{ flex: 1 }}
  cameraOptions={{
    flashMode: 'auto', // on/off/auto(default)
    focusMode: 'on', // off/on(default)
    zoomMode: 'on', // off/on(default)
    ratioOverlay: '1:1', // optional
    ratioOverlayColor: '#00000077', // optional
  }}
  resetFocusTimeout={0} // optional
  resetFocusWhenMotionDetected={true} // optional
  saveToCameraRole={false} // optional
  // Barcode Scanner Props
  scanBarcode={false} // optional
  showFrame={false} // Barcode only, optional
  laserColor='red' // Barcode only, optional
  frameColor='yellow' // Barcode only, optional
  surfaceColor='blue' // Barcode only, optional
  onReadCode={(
    event, // optional
  ) => console.log(event.nativeEvent.codeStringValue)}
/>

Prop	Type	Description
resetFocusTimeout	Number	iOS only. Dismiss tap to focus after this many milliseconds. Default 0 (disabled). Example: 5000 is 5 seconds.
resetFocusWhenMotionDetected	Boolean	iOS only. Dismiss tap to focus when focus area content changes. Native iOS feature, see documentation: https://developer.apple.com/documentation/avfoundation/avcapturedevice/1624644-subjectareachangemonitoringenabl?language=objc). Default true.
saveToCameraRoll	Boolean	Using the camera roll is slower than using regular files stored in your app. On an iPhone X in debug mode, on a real phone, we measured around 100-150ms processing time to save to the camera roll. Note: This only work on real devices. It will hang indefinitly on simulators.
saveToCameraRollWithPhUrl	Boolean	iOS only. If true, speeds up photo taking by about 5-50ms (measured on iPhone X) by only returning a rn-cameraroll-compatible ph://.. URL instead of a regular file://.. URL.
cameraOptions	Object	See cameraOptions below

cameraOptions

Attribute	Values	Description
flashMode	'on'/'off'/'auto'	Camera flash mode (default is auto)
focusMode	'on'/'off'	Camera focus mode (default is on)
zoomMode	'on'/'off'	Camera zoom mode
ratioOverlay	['int':'int', ...]	Show a guiding overlay in the camera preview for the selected ratio. Does not crop image as of v9.0. Example: ['16:9', '1:1', '3:4']
ratioOverlayColor	Color	Any color with alpha (default is '#ffffff77')

Camera API

capture({ ... }) - must have the wanted camera capture reference

Capture image ({ saveToCameraRoll: boolean }). Using the camera roll is slower than using regular files stored in your app. On an iPhone X in debug mode, on a real phone, we measured around 100-150ms processing time to save to the camera roll.

const image = await this.camera.capture();

checkDeviceCameraAuthorizationStatus (iOS only)

const isCameraAuthorized = await Camera.checkDeviceCameraAuthorizationStatus();

return values:

AVAuthorizationStatusAuthorized returns true

AVAuthorizationStatusNotDetermined returns -1

otherwise, returns false

requestDeviceCameraAuthorization (iOS only)

const isUserAuthorizedCamera = await Camera.requestDeviceCameraAuthorization();

AVAuthorizationStatusAuthorized returns true

otherwise, returns false

QR Code

import { CameraScreen } from 'react-native-camera-kit';

<CameraScreen
  actions={{ rightButtonText: 'Done', leftButtonText: 'Cancel' }}
  onBottomButtonPressed={(event) => this.onBottomButtonPressed(event)}
  scanBarcode={true}
  laserColor={'blue'}
  frameColor={'yellow'}
  onReadCode={(event) => Alert.alert('Qr code found')} //optional
  hideControls={false} //(default false) optional, hide buttons and additional controls on top and bottom of screen
  showFrame={true} //(default false) optional, show frame with transparent layer (qr code or barcode will be read on this area ONLY), start animation for scanner,that stoped when find any code. Frame always at center of the screen
  offsetForScannerFrame={10} //(default 30) optional, offset from left and right side of the screen
  heightForScannerFrame={300} //(default 200) optional, change height of the scanner frame
  colorForScannerFrame={'red'} //(default white) optional, change colot of the scanner frame
/>;

Contributing

• Pull Requests are welcome, if you open a pull request we will do our best to get to it in a timely manner
• Pull Request Reviews are even more welcome! we need help testing, reviewing, and updating open PRs
• If you are interested in contributing more actively, please contact us.

License

The MIT License.

See LICENSE