react-native-camerakit-tef
v14.0.0
Published
biblioteca de câmera react native para uso em maquininhas smart br
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Readme
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
oryarn example android
Components
CameraScreen
Full screen camera component that holds camera state and provides camera controls
import { CameraScreen } from 'react-native-camera-kit';
<CameraScreen
actions={{ rightButtonText: 'Done', leftButtonText: 'Cancel' }}
onBottomButtonPressed={(event) => this.onBottomButtonPressed(event)}
flashImages={{
// optional, images for flash state
on: require('path/to/image'),
off: require('path/to/image'),
auto: require('path/to/image'),
}}
cameraFlipImage={require('path/to/image')} // optional, image for flipping camera button
captureButtonImage={require('path/to/image')} // optional, image capture button
torchOnImage={require('path/to/image')} // optional, image for toggling on flash light
torchOffImage={require('path/to/image')} // optional, image for toggling off flash light
hideControls={false} // (default false) optional, hides camera controls
showCapturedImageCount={false} // (default false) optional, show count for photos taken during that capture session
/>
Barcode / QR Code Scanning
Additionally, the camera screen can be used for barcode scanning
<CameraScreen
...
// 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
/>
Camera
Barebones camera component
import { Camera, CameraType } from 'react-native-camera-kit';
<Camera
ref={(ref) => (this.camera = ref)}
cameraType={CameraType.Back} // front/back(default)
/>
Camera Props (Optional)
| Props | Type | Description |
| ------------------------------ | ----------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| flashMode
| 'on'
/'off'
/'auto'
| Camera flash mode. Default: auto
|
| focusMode
| 'on'
/'off'
| Camera focus mode. Default: on
|
| zoomMode
| 'on'
/'off'
| Enable pinch to zoom camera. Default: on
|
| torchMode
| 'on'
/'off'
| Toggle flash light when camera is active. Default: off
|
| 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: '#ffffff77'
|
| 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
. |
| onOrientationChange
| Function | Callback when physical device orientation changes. Returned event contains orientation
. Ex: onOrientationChange={(event) => console.log(event.nativeEvent.orientation)}
. Use import { Orientation } from 'react-native-camera-kit'; if (event.nativeEvent.orientation === Orientation.PORTRAIT) { ... }
to understand the new value |
Barcode Props (Optional)
| Props | Type | Description |
| -------------- | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| scanBarcode
| Boolean | Enable barcode scanner. Default: false
|
| showFrame
| Boolean | Show frame in barcode scanner. Default: false
|
| laserColor
| Color | Color of barcode scanner laser visualization. Default: red
|
| frameColor
| Color | Color of barcode scanner frame visualization. Default: yellow
|
| surfaceColor
| Color | Color of barcode scanner surface visualization. Default: blue
|
| onReadCode
| Function | Callback when scanner successfully reads barcode. Returned event contains codeStringValue
. Default: null
. Ex: onReadCode={(event) => console.log(event.nativeEvent.codeStringValue)}
|
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