/// <summary>
/// Create new NFC object
/// </summary>
/// <param name="NFCId">The NFCId<see cref="string"/></param>
private void AddNewRecord(string NFCId)
{
Device.BeginInvokeOnMainThread(async() =>
{
var r = await UserDialogs.Instance.PromptAsync(AppResources.nfc_tag_name, inputType: InputType.Name);
await Task.Delay(500);
if (!r.Ok)
{
return;
}
var name = r.Text;
if (string.IsNullOrEmpty(name))
{
return;
}
App.ShowToast(AppResources.nfc_saved + " " + name);
var NFC = new NFCModel()
{
Id = NFCId,
Name = name,
Enabled = true,
};
_oListSource.Add(NFC);
SaveAndRefresh();
});
}
public void ShowBulletins()
{
if (App.IsForeground && Bulletins.Count > 0)
{
try
{
Device.BeginInvokeOnMainThread(async() =>
{
await RaisePropertyChanged(() => Bulletins);
if (!Accessibility.AccessibilityEnabled)
{
// make sure none are currently open
if (_page == null)
{
_page = new BulletinPopupPage();
await PopupNavigation.Instance.PushAsync(_page);
}
}
else
{
foreach (var b in Bulletins)
{
await UserDialogs.Instance.AlertAsync(b.Description, b.Title);
}
}
});
}
catch (Exception e)
{
Crashes.TrackError(e);
}
}
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
Tag = e.Parameter;
if (e.Parameter is FeedItem feed)
{
BindingContext.Title = "通知详情";
PrimaryMenu.Add(new AppBarButton {
Icon = new SymbolIcon(Symbol.Flag), Label = "详情", Command = new Command(() => Device.OpenUri(new Uri(feed.Link)))
});
Title = feed.Title;
Time = "时间：" + feed.PubDate;
Sender = "分类：" + feed.Category;
Body = feed.Description.Replace(' ', '\n');
}
else if (e.Parameter is IMessageItem msg)
{
BindingContext.Title = "消息详情";
PrimaryMenu.Add(new AppBarButton {
Icon = new SymbolIcon(Symbol.Delete), Label = "设为未读", Command = msg.SetUnread
});
PrimaryMenu.Add(new AppBarButton {
Icon = new SymbolIcon(Symbol.Delete), Label = "删除", Command = msg.Delete
});
Title = msg.Title;
Time = "时间：" + msg.Time.ToString();
Sender = "发件人：" + msg.Sender;
Body = msg.Body;
}
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
Tag = e.Parameter;
if (e.Parameter is FeedItem feed)
{
ViewModel.Title = "通知详情";
PrimaryMenu.Add(new AppBarButton {
Icon = new SymbolIcon(Symbol.Flag), Label = "详情", Command = new Command(() => Device.OpenUri(new Uri(feed.Link)))
});
Title = feed.Title;
Time = "时间：" + feed.PubDate;
Sender = "分类：" + feed.Category;
var desc = feed.Description.Trim();
while (desc.Contains(" "))
{
desc = desc.Replace(" ", " ");
}
Body = desc;
}
else if (e.Parameter is IMessageItem msg)
{
ViewModel.Title = "消息详情";
PrimaryMenu.Add(new AppBarButton {
Icon = new SymbolIcon(Symbol.Delete), Label = "删除", Command = msg.Delete
});
Title = msg.Title;
Time = "时间：" + msg.Time.ToString();
Sender = "发件人：" + msg.Sender;
Body = msg.Body;
}
}
void OnEvent(string msg) => Device.BeginInvokeOnMainThread(() =>
this.Output += msg + Environment.NewLine + Environment.NewLine
);
void BuildServer()
{
if (this.server != null)
{
return;
}
try
{
this.server = this.BleAdapter.CreateGattServer();
var service = this.server.AddService(Guid.NewGuid(), true);
var characteristic = service.AddCharacteristic(
Guid.NewGuid(),
CharacteristicProperties.Read | CharacteristicProperties.Write | CharacteristicProperties.WriteNoResponse,
GattPermissions.Read | GattPermissions.Write
);
var notifyCharacteristic = service.AddCharacteristic
(
Guid.NewGuid(),
CharacteristicProperties.Notify,
GattPermissions.Read | GattPermissions.Write
);
//var descriptor = characteristic.AddDescriptor(Guid.NewGuid(), Encoding.UTF8.GetBytes("Test Descriptor"));
notifyCharacteristic.WhenDeviceSubscriptionChanged().Subscribe(e =>
{
var @event = e.IsSubscribed ? "Subscribed" : "Unsubcribed";
this.OnEvent($"Device {e.Device.Uuid} {@event}");
this.OnEvent($"Charcteristic Subcribers: {notifyCharacteristic.SubscribedDevices.Count}");
if (this.notifyBroadcast == null)
{
this.OnEvent("Starting Subscriber Thread");
this.notifyBroadcast = Observable
.Interval(TimeSpan.FromSeconds(1))
.Where(x => notifyCharacteristic.SubscribedDevices.Count > 0)
.Subscribe(_ =>
{
try
{
var dt = DateTime.Now.ToString("g");
var bytes = Encoding.UTF8.GetBytes(dt);
notifyCharacteristic
.BroadcastObserve(bytes)
.Subscribe(x =>
{
var state = x.Success ? "Successfully" : "Failed";
var data = Encoding.UTF8.GetString(x.Data, 0, x.Data.Length);
this.OnEvent($"{state} Broadcast {data} to device {x.Device.Uuid} from characteristic {x.Characteristic}");
});
}
catch (Exception ex)
{
Debug.WriteLine("Error during broadcast: " + ex);
}
});
}
});
characteristic.WhenReadReceived().Subscribe(x =>
{
var write = this.CharacteristicValue;
if (String.IsNullOrWhiteSpace(write))
{
write = "(NOTHING)";
}
x.Value = Encoding.UTF8.GetBytes(write);
this.OnEvent("Characteristic Read Received");
});
characteristic.WhenWriteReceived().Subscribe(x =>
{
var write = Encoding.UTF8.GetString(x.Value, 0, x.Value.Length);
this.OnEvent($"Characteristic Write Received - {write}");
});
this.server
.WhenRunningChanged()
.Catch <bool, ArgumentException>(ex =>
{
this.Dialogs.Alert("Error Starting GATT Server - " + ex);
return(Observable.Return(false));
})
.Subscribe(started => Device.BeginInvokeOnMainThread(() =>
{
if (!started)
{
this.ServerText = "Start Server";
this.OnEvent("GATT Server Stopped");
}
else
{
this.notifyBroadcast?.Dispose();
this.notifyBroadcast = null;
this.ServerText = "Stop Server";
this.OnEvent("GATT Server Started");
foreach (var s in this.server.Services)
{
this.OnEvent($"Service {s.Uuid} Created");
foreach (var ch in s.Characteristics)
{
this.OnEvent($"Characteristic {ch.Uuid} Online - Properties {ch.Properties}");
}
}
}
}));
this.server
.WhenAnyCharacteristicSubscriptionChanged()
.Subscribe(x =>
this.OnEvent($"[WhenAnyCharacteristicSubscriptionChanged] UUID: {x.Characteristic.Uuid} - Device: {x.Device.Uuid} - Subscription: {x.IsSubscribing}")
);
//descriptor.WhenReadReceived().Subscribe(x =>
// this.OnEvent("Descriptor Read Received")
//);
//descriptor.WhenWriteReceived().Subscribe(x =>
//{
// var write = Encoding.UTF8.GetString(x.Value, 0, x.Value.Length);
// this.OnEvent($"Descriptor Write Received - {write}");
//});
}
catch (Exception ex)
{
this.Dialogs.Alert("Error building gatt server - " + ex);
}
}
/// <summary>
/// Add new qr code to system
/// </summary>
/// <param name="sender">The sender<see cref="object"/></param>
/// <param name="e">The e<see cref="EventArgs"/></param>
private async void ToolbarItem_Activated(object sender, EventArgs e)
{
if (!App.AppSettings.QRCodeEnabled)
{
return;
}
if (await ValidatePermissions())
{
if (Device.RuntimePlatform == Device.iOS)
{
var scanner = new ZXing.Mobile.MobileBarcodeScanner();
var result = await scanner.Scan();
if (result == null)
{
return;
}
try
{
var qrCodeId = result.Text.GetHashCode() + "";
if (_oListSource.Any(o => string.Compare(o.Id, qrCodeId, StringComparison.OrdinalIgnoreCase) == 0))
{
App.ShowToast(AppResources.qrcode_exists);
}
else
{
AddNewRecord(qrCodeId);
}
}
catch (Exception ex)
{
App.AddLog(ex.Message);
}
}
else
{
const BarcodeFormat expectedFormat = BarcodeFormat.QR_CODE;
var opts = new ZXing.Mobile.MobileBarcodeScanningOptions
{
PossibleFormats = new List <BarcodeFormat> {
expectedFormat
}
};
System.Diagnostics.Debug.WriteLine("Scanning " + expectedFormat);
var scanPage = new ZXingScannerPage(opts);
scanPage.OnScanResult += (result) =>
{
scanPage.IsScanning = false;
Device.BeginInvokeOnMainThread(async() =>
{
await Navigation.PopAsync();
try
{
var qrCodeId = result.Text.GetHashCode() + "";
if (_oListSource.Any(
o => string.Compare(o.Id, qrCodeId, StringComparison.OrdinalIgnoreCase) == 0))
{
App.ShowToast(AppResources.qrcode_exists);
}
else
{
AddNewRecord(qrCodeId);
}
}
catch (Exception ex)
{
App.AddLog(ex.Message);
}
});
};
await Navigation.PushAsync(scanPage);
}
}
}
