init method
Future<void>
init({
- required String macAddress,
- OnPrinterConnectionChange? onPrinterConnectionChange,
- OnPrinterOperationChange? onDocPrinted,
override
Initializes the Rongta printer with the provided parameters.
The macAddress
parameter specifies the MAC address of the printer.
The onPrinterConnectionChange
parameter (optional) is a callback function
that will be invoked when the printer connection status changes.
The onDocPrinted
parameter (optional) is a callback function that will be
invoked when a document is successfully printed.
Returns a Future that completes when the initialization is finished.
Implementation
@override
Future<void> init({
required String macAddress,
OnPrinterConnectionChange? onPrinterConnectionChange,
OnPrinterOperationChange? onDocPrinted,
}) async {
// Set the method call handler to handle platform method calls.
methodChannel.setMethodCallHandler((call) {
switch (call.method) {
case 'on_printer_connected':
if (onPrinterConnectionChange != null) {
onPrinterConnectionChange(PrinterConnectionStatus.connected);
}
break;
case 'on_printer_disconnected':
if (onPrinterConnectionChange != null) {
onPrinterConnectionChange(PrinterConnectionStatus.disconnected);
}
break;
case 'on_printer_write_completion':
if (onDocPrinted != null) {
onDocPrinted(PrinterOperationStatus.idle);
}
break;
}
return Future.value();
});
// Invoke the platform method 'init' with the provided parameters.
return await methodChannel.invokeMethod(
'init',
{
'mac_address': macAddress,
},
);
}