Top 10 Examples of "expo-barcode-scanner in functional component" in JavaScript
Dive into secure and efficient coding practices with our curated list of the top 10 examples showcasing 'expo-barcode-scanner' in functional components in JavaScript. Our advanced machine learning engine meticulously scans each line of code, cross-referencing millions of open source libraries to ensure your implementation is not just functional, but also robust and secure. Elevate your React applications to new heights by mastering the art of handling side effects, API calls, and asynchronous operations with confidence and precision.
it('should raises an error when call with invalid args', () => {
// $ExpectError: first argument is required
BarCodeScanner.scanFromURLAsync();
// $ExpectError: first argument must be a string
BarCodeScanner.scanFromURLAsync(123);
// $ExpectError: second argument must be an array
BarCodeScanner.scanFromURLAsync('url', 123);
BarCodeScanner.scanFromURLAsync('url', [
// $ExpectError: invalid barcode type
123,
]);
});
});it('should raises an error when call with invalid args', () => {
// $ExpectError: first argument is required
BarCodeScanner.scanFromURLAsync();
// $ExpectError: first argument must be a string
BarCodeScanner.scanFromURLAsync(123);
// $ExpectError: second argument must be an array
BarCodeScanner.scanFromURLAsync('url', 123);
BarCodeScanner.scanFromURLAsync('url', [
// $ExpectError: invalid barcode type
123,
]);
});
});it('should raises an error when call with invalid args', () => {
// $ExpectError: first argument is required
BarCodeScanner.scanFromURLAsync();
// $ExpectError: first argument must be a string
BarCodeScanner.scanFromURLAsync(123);
// $ExpectError: second argument must be an array
BarCodeScanner.scanFromURLAsync('url', 123);
BarCodeScanner.scanFromURLAsync('url', [
// $ExpectError: invalid barcode type
123,
]);
});
});it('should pass when call with valid array of BarCodeType', () => {
BarCodeScanner.scanFromURLAsync('url', [
Constants.BarCodeType.qr,
Constants.BarCodeType.aztec,
]);
});onCameraReady={this.collectPictureSizes}
type={this.state.type}
flashMode={this.state.flash}
autoFocus={this.state.autoFocus}
zoom={this.state.zoom}
whiteBalance={this.state.whiteBalance}
ratio={this.state.ratio}
pictureSize={this.state.pictureSize}
onMountError={this.handleMountError}
onFacesDetected={this.state.faceDetecting ? this.onFacesDetected : undefined}
faceDetectorSettings={{
tracking: true,
}}
barCodeScannerSettings={{
barCodeTypes: [
BarCodeScanner.Constants.BarCodeType.qr,
BarCodeScanner.Constants.BarCodeType.pdf417,
],
}}
onBarCodeScanned={this.state.barcodeScanning ? this.onBarCodeScanned : undefined}>
{this.renderTopBar()}
{this.renderBottomBar()}
{this.state.faceDetecting && this.renderFaces()}
{this.state.faceDetecting && this.renderLandmarks()}
{this.state.showMoreOptions && this.renderMoreOptions()}
);case PermissionState.Denied:
return ;
case PermissionState.Granted:
return (
);
default:
const _: never = this.state.cameraPermission;
return _;
}
}ref={ref => (this.camera = ref)}
style={styles.camera}
onCameraReady={this.collectPictureSizes}
type={this.state.type}
flashMode={this.state.flash}
autoFocus={this.state.autoFocus}
zoom={this.state.zoom}
whiteBalance={this.state.whiteBalance}
ratio={this.state.ratio}
pictureSize={this.state.pictureSize}
onMountError={this.handleMountError}
onFacesDetected={this.state.faceDetecting ? this.onFacesDetected : undefined}
barCodeScannerSettings={{
barCodeTypes: [
BarCodeScanner.Constants.BarCodeType.qr,
BarCodeScanner.Constants.BarCodeType.pdf417,
],
}}
onBarCodeScanned={this.state.barcodeScanning ? this.onBarCodeScanned : undefined}>
{this.renderTopBar()}
{this.renderBottomBar()}
{this.state.faceDetecting && this.renderFaces()}
{this.state.faceDetecting && this.renderLandmarks()}
{this.state.showMoreOptions && this.renderMoreOptions()}
);Requesting camera permission to scan a league code.
);
} else if (this.state.hasCameraPermission === false) {
content = (
eLadder needs camera permission to scan a league code.
);
} else {
content = (
);
}
return {content};
}
}toggleType = () =>
this.setState({
type:
this.state.type === BarCodeScanner.Constants.Type.back
? BarCodeScanner.Constants.Type.front
: BarCodeScanner.Constants.Type.back,
})width: number;
height: number;
};
};
}
export default class BarcodeScannerExample extends React.Component<{}, State> {
static navigationOptions = {
title: '',
};
canChangeOrientation = false;
readonly state: State = {
isPermissionsGranted: false,
type: BarCodeScanner.Constants.Type.back,
alerting: false,
haveDimensions: false,
};
componentDidFocus = async () => {
const { status } = await Permissions.askAsync(Permissions.CAMERA);
this.setState({ isPermissionsGranted: status === 'granted' });
}
toggleAlertingAboutResult = () => {
this.setState({ alerting: !this.state.alerting });
}
toggleScreenOrientationState = () => {
if (this.canChangeOrientation) {
ScreenOrientation.lockAsync(ScreenOrientation.OrientationLock.PORTRAIT_UP);