问在没有Fiori客户端的浏览器中使用sap.ndc.BarcodeScanner

EN

<Button icon="sap-icon://bar-code" press="scanBarcode"/>
<Label id="label" text="Null"/>

scanBarcode: function(oEvent) {
    sap.ndc.BarcodeScanner.scan(
        var that = this;
        function (mResult) {
             if (!mResult.cancelled) {
                 var code = mResult.text;
                 that.byId("label").setText(code);
             }
        },
        function (Error) {
            if (Error !== undefined) {
                MessageBox.error(Error.message);
            }
        }
    );
}