react-native-camera-kit-mercafacil v14.0.0-beta3

Installation (RN > 0.60)

yarn add react-native-camera-kit

cd ios && pod install && cd ..

Android: Add Kotlin to your project

Permissions

Android

Add the following uses-permission to your AndroidManifest.xml (usually found at: android/src/main/)

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

iOS

Add the following usage descriptions to your Info.plist (usually found at: ios/PROJECT_NAME/)

<key>NSCameraUsageDescription</key>
<string>For taking photos</string>

<key>NSPhotoLibraryUsageDescription</key>
<string>For saving photos</string>

Running the example project

• yarn bootstrap
• yarn example ios or yarn example android

Components

CameraScreen

Full screen camera component that holds camera state and provides common camera controls. Works for most needs

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

<CameraScreen
  // All Camera props can be used here, including Barcode ones
  ...

  // Plus the following ones specific to CameraScreen
  actions={{ leftButtonText: 'Cancel', leftCaptureRetakeButtonText: 'Abandon' }}
  onBottomButtonPressed={(event) => this.onBottomButtonPressed(event)}
  flashImages={{
    // optional, images for flash state button
    on: require('path/to/image'),
    off: require('path/to/image'),
    auto: require('path/to/image'),
  }}
  flashImageStyle={} // optional, ImageStyle applied to flashImages
  cameraFlipImage={require('path/to/image')} // optional, image for flipping camera button
  cameraFlipImageStyle={} // optional, ImageStyle applied to cameraFlipImage
  captureButtonImage={require('path/to/image')} // optional, image capture button
  captureButtonImageStyle={} // optional, ImageStyle applied to captureButtonImage
  torchOnImage={require('path/to/image')} // optional, image for toggling on flash light
  torchOffImage={require('path/to/image')} // optional, image for toggling off flash light
  torchImageStyle={} // optional, ImageStyle applied to torchImage
  hideControls={false} // (default false) optional, hides camera controls
  showCapturedImageCount={false} // (default false) optional, show count for photos taken during that capture session
  cameraRatioOverlay // optional
  allowCaptureRetake={false} // (default false) optional, ask for picture validation
/>

Camera

Barebones camera component if you need advanced/customized interface

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

<Camera
  ref={(ref) => (this.camera = ref)}
  cameraType={CameraType.Back} // front/back(default)
  flashMode='auto'
/>

Barcode / QR Code Scanning

Additionally, the Camera / CameraScreen can be used for barcode scanning

<Camera
  ...
  // Barcode props
  scanBarcode={true}
  onReadCode={(event) => Alert.alert('QR code found')} // optional
  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
  laserColor='red' // (default red) optional, color of laser in scanner frame
  frameColor='white' // (default white) optional, color of border of scanner frame
/>

CameraScreen Props (Optional)

Camera Props (Optional)

Imperative API

Note: Must be called on a valid camera ref

capture()

Capture image as JPEG.

A temporary file is created. You must move this file to a permanent location (e.g. the app's 'Documents' folder) if you need it beyond the current session of the app as it may be deleted when the user leaves the app. You can move files by using a file system library such as react-native-fs or expo-filesystem. (On Android we currently have an unsupported outputPath prop but it's subject to change at any time).

Note that the reason you're getting a URL despite it being a file is because Android 10+ encourages URIs. To keep things consistent regardless of settings or platform we always send back a URI.

const { uri } = await this.camera.capture();
// uri = 'file:///data/user/0/com.myorg.myapp/cache/ckcap123123123123.jpg'

If you want to store it permanently, here's an example using react-native-fs:

import RNFS from 'react-native-fs';
// [...]
let { uri } = await this.camera.capture();
if (uri.startsWith('file://')) {
  // Platform dependent, iOS & Android uses '/'
  const pathSplitter = '/';
  // file:///foo/bar.jpg => /foo/bar.jpg
  const filePath = uri.replace('file://', '');
  // /foo/bar.jpg => [foo, bar.jpg]
  const pathSegments = filePath.split(pathSplitter);
  // [foo, bar.jpg] => bar.jpg
  const fileName = pathSegments[pathSegments.length - 1];

  await RNFS.moveFile(filePath, `${RNFS.DocumentDirectoryPath}/${fileName}`);
  uri = `file://${destFilePath}`;
}

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

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