//Start searching for printers
private void StartBluetoothDiscovery()
{
Debug.WriteLine("Discovering Bluetooth Printers");
IDiscoveryEventHandler bthandler = DiscoveryHandlerFactory.Current.GetInstance();
bthandler.OnDiscoveryError += DiscoveryHandler_OnDiscoveryError;
bthandler.OnDiscoveryFinished += DiscoveryHandler_OnDiscoveryFinished;
bthandler.OnFoundPrinter += DiscoveryHandler_OnFoundPrinter;
Debug.WriteLine("Starting Bluetooth Discovery");
DependencyService.Get <IPrinterDiscovery>().FindBluetoothPrinters(bthandler);
}
private void StartBluetoothDiscovery()
{
IDiscoveryEventHandler bthandler = DiscoveryHandlerFactory.Current.GetInstance();
bthandler.OnDiscoveryError += DiscoveryHandler_OnDiscoveryError;
bthandler.OnDiscoveryFinished += DiscoveryHandler_OnDiscoveryFinished;
bthandler.OnFoundPrinter += DiscoveryHandler_OnFoundPrinter;
connetionType = ConnectionType.Bluetooth;
System.Diagnostics.Debug.WriteLine("Starting Bluetooth Discovery");
DependencyService.Get <IPrinterDiscovery>().FindBluetoothPrinters(bthandler);
}
//Start searching for printers
private void StartBluetoothDiscovery()
{
IDiscoveryEventHandler bthandler = DiscoveryHandlerFactory.Current.GetInstance();
bthandler.OnDiscoveryError += DiscoverError;
bthandler.OnDiscoveryFinished += DiscoveryFinished;
bthandler.OnFoundPrinter += DiscoveryHandler_OnFoundPrinter;
IPrinterDiscovery ip = new PrinterDiscovery();
ip.FindBluetoothPrinters(bthandler, this);
BluetoothDiscoverer.Current.FindPrinters(Android.App.Application.Context, bthandler);
// DependencyService.Get<IPrinterDiscovery>().FindBluetoothPrinters(bthandler);
}
private void StartNetworkDiscovery()
{
try
{
IDiscoveryEventHandler nwhandler = DiscoveryHandlerFactory.Current.GetInstance();
nwhandler.OnDiscoveryError += DiscoveryHandler_OnDiscoveryError;
nwhandler.OnDiscoveryFinished += DiscoveryHandler_OnDiscoveryFinished;
nwhandler.OnFoundPrinter += DiscoveryHandler_OnFoundPrinter;
Debug.WriteLine("Starting Network Discovery");
NetworkDiscoverer.Current.LocalBroadcast(nwhandler);
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine("Network Exception: " + e.Message);
}
}
public LinkOsVm()
{
this.Title = "Link-OS";
_handler = LinkOS.Plugin.DiscoveryHandlerFactory.Current.GetInstance();
_foundPrinters = new ObservableCollection <FoundPrinter>();
LoadPrinters =
new Command(
async _ => {
try {
FoundPrinters.Clear();
SearchingForPrinters = true;
CurrentStatus = "Searching For Printers...";
_handler.OnFoundPrinter += Handler_OnFoundPrinter;
await Task.Run(() => LinkOS.Plugin.NetworkDiscoverer.Current.FindPrinters(_handler));
} catch (Exception ex) {
System.Diagnostics.Debug.WriteLine(ex);
} finally {
_handler.OnFoundPrinter += Handler_OnFoundPrinter;
SearchingForPrinters = false;
CurrentStatus = "Finished Searching...";
}
},
_ => !SearchingForPrinters);
PrintSample =
new Command(
_ => {
var selectedPrinters = FoundPrinters.Where(x => x.Selected).ToList();
foreach (var printer in selectedPrinters)
{
var conn = LinkOS.Plugin.ConnectionBuilder.Current.Build(printer.IpAddress);
try {
conn.Open();
conn.Write(Encoding.UTF8.GetBytes(SampleZpl));
} catch (Exception ex) {
CurrentStatus = ex.Message;
}
finally {
conn.Close();
}
}
});
}
private void StartUSBDiscovery()
{
try
{
IDiscoveryEventHandler usbhandler = DiscoveryHandlerFactory.Current.GetInstance();
usbhandler.OnDiscoveryError += DiscoveryHandler_OnDiscoveryError;
usbhandler.OnDiscoveryFinished += DiscoveryHandler_OnDiscoveryFinished;
usbhandler.OnFoundPrinter += DiscoveryHandler_OnFoundPrinter;
Debug.WriteLine("Starting USB Discovery");
DependencyService.Get <IPrinterDiscovery>().FindUSBPrinters(usbhandler);
}
catch (NotImplementedException)
{
// USB not availible on iOS, so handle the exeption and move on to Bluetooth discovery
StartBluetoothDiscovery();
}
}
private void StartUSBDiscovery()
{
OnStatusMessage("Discovering USB Printers");
try
{
IDiscoveryEventHandler usbhandler = DiscoveryHandlerFactory.Current.GetInstance();
usbhandler.OnDiscoveryError += DiscoveryHandler_OnDiscoveryError;
usbhandler.OnDiscoveryFinished += DiscoveryHandler_OnDiscoveryFinished;
usbhandler.OnFoundPrinter += DiscoveryHandler_OnFoundPrinter;
connetionType = ConnectionType.USB;
System.Diagnostics.Debug.WriteLine("Starting USB Discovery");
Xamarin.Forms.DependencyService.Get <IPrinterDiscovery>().FindUSBPrinters(usbhandler);
}
catch (NotImplementedException)
{
// USB not availible on iOS, so handle the exeption and move on to Bluetooth discovery
StartBluetoothDiscovery();
}
}
