Task <ControlClient> ConnectAsync(IAdapter adapter)
{
var tcs = new TaskCompletionSource <ControlClient> ();
adapter.DeviceDiscovered += (object sender, DeviceDiscoveredEventArgs e) => {
Device.BeginInvokeOnMainThread(async() => {
// Look for a specific device
if (e.Device.ID.ToString().StartsWith("af18", StringComparison.OrdinalIgnoreCase))
{
// Connect to the device
await adapter.ConnectAsync(e.Device);
// Establish the control client
using (var stream = new LEStream(e.Device)) {
var client = new ControlClient(stream);
client.RunAsync(CancellationToken.None); // Don't await to run in background
tcs.SetResult(client);
}
// Update the UI
connectLabel.Text = "Yay " + e.Device + "!";
}
});
};
adapter.StartScanningForDevices();
return(tcs.Task);
}
async Task RunControlAsync()
{
var cts = new CancellationTokenSource();
try
{
await adapter.ConnectAsync(Robot);
using (var s = new LEStream(Robot))
{
client = new ControlClient(s);
await client.RunAsync(cts.Token);
}
}
catch (Exception ex)
{
Debug.WriteLine("Stream failed");
Debug.WriteLine(ex);
InvokeOnMainThread(() =>
{
new UIAlertView("Unable to connect", "Please try to select a device again.", null, "OK").Show();
});
}
finally
{
//client = null;
}
}
async Task RunControlAsync()
{
var cts = new CancellationTokenSource();
try {
var device = await ConnectAsync();
using (var s = new LEStream(device)) {
client = new ControlClient(s);
variablesList.ItemsSource = client.Variables;
commandsList.ItemsSource = client.Commands;
await client.RunAsync(cts.Token);
}
} catch (Exception ex) {
Debug.WriteLine("Stream failed");
Debug.WriteLine(ex);
} finally {
client = null;
}
}