本文整理匯總了TypeScript中nativescript-barcodescanner.BarcodeScanner.scan方法的典型用法代碼示例。如果您正苦於以下問題：TypeScript BarcodeScanner.scan方法的具體用法？TypeScript BarcodeScanner.scan怎麽用？TypeScript BarcodeScanner.scan使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類nativescript-barcodescanner.BarcodeScanner的用法示例。
在下文中一共展示了BarcodeScanner.scan方法的4個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的TypeScript代碼示例。
示例1: doContinuousScan
public doContinuousScan() {
this.barcodeScanner.scan({
reportDuplicates: true,
continuousScanCallback: function (result) {
console.log(`${result.format}: ${result.text} @ ${new Date().getTime()}`);
},
closeCallback: () => {
console.log("Scanner closed @ " + new Date().getTime());
}
});
}示例2:
let scan = () => {
this.barcodeScanner.scan({
formats: "QR_CODE, EAN_13",
beepOnScan: true,
reportDuplicates: true,
preferFrontCamera: false
// continuousScanCallback: scanResult => {
// console.log("result: " + JSON.stringify(scanResult));
// this.barcodeScanner.stop();
// }
})
.then(result => console.log(JSON.stringify(result)))
.catch(error => console.log(error));
};示例3: doContinuousScanMax3
public doContinuousScanMax3() {
let count = 0;
let self = this;
this.barcodeScanner.scan({
reportDuplicates: false,
closeCallback: () => {
console.log("Scanner closed @ " + new Date().getTime());
},
continuousScanCallback: function (result) {
count++;
console.log(result.format + ": " + result.text + " (count: " + count + ")");
if (count === 3) {
self.barcodeScanner.stop();
setTimeout(function () {
alert({
title: "Scanned 3 codes",
message: "Check the log for the results",
okButtonText: "Sweet!"
});
}, 1000);
}
}
});
}示例4: scan
private scan(front: boolean, flip: boolean, torch?: boolean, orientation?: string) {
this.barcodeScanner.scan({
formats: "QR_CODE",
cancelLabel: "EXIT. Also, try the volume buttons!", // iOS only, default 'Close'
cancelLabelBackgroundColor: "#333333", // iOS only, default '#000000' (black)
message: "Use the volume buttons for extra light", // Android only, default is 'Place a barcode inside the viewfinder rectangle to scan it.'
preferFrontCamera: front, // Android only, default false
showFlipCameraButton: flip, // default false
showTorchButton: torch, // iOS only, default false
torchOn: false, // launch with the flashlight on (default false)
resultDisplayDuration: 500, // Android only, default 1500 (ms), set to 0 to disable echoing the scanned text
orientation: orientation, // Android only, default undefined (sensor-driven orientation), other options: portrait|landscape
beepOnScan: true, // Play or Suppress beep on scan (default true)
openSettingsIfPermissionWasPreviouslyDenied: true, // On iOS you can send the user to the settings app if access was previously denied
closeCallback: () => {
console.log("Scanner closed @ " + new Date().getTime());
}
}).then(
function (result) {
console.log("--- scanned: " + result.text);
// Note that this Promise is never invoked when a 'continuousScanCallback' function is provided
setTimeout(function () {
// if this alert doesn't show up please upgrade to {N} 2.4.0+
alert({
title: "Scan result",
message: "Format: " + result.format + ",\nValue: " + result.text,
okButtonText: "OK"
});
}, 500);
},
function (errorMessage) {
let er = new Error();
console.log('Error', er.stack);
console.log("No scan. " + errorMessage);
}
);
}