checkConnected method
connect let you connect to a bluetooth printer
Implementation
Future<bool> checkConnected() async {
try {
if (Platform.isAndroid || Platform.isIOS) {
var device = themal.BluetoothDevice(printer.name, printer.address);
return (await bluetooth.isDeviceConnected(device)) ?? false;
}
} catch (e) {}
return Future<bool>.value(false);
}