public TemperaturePage(BleDevice device)
{
InitializeComponent();
temperaturePageViewModel = new TemperaturePageViewModel(device);
BindingContext = temperaturePageViewModel;
// Initialize the refresh rate picker.
List <string> rates = new List <string>
{
"1 second",
"2 seconds",
"5 seconds",
"10 seconds",
"30 seconds",
"60 seconds"
};
ratePicker.ItemsSource = rates;
ratePicker.SelectedIndex = 2;
// Register the back button action.
if (EnableBackButtonOverride)
{
CustomBackButtonAction = async() =>
{
// Ask the user if wants to close the connection.
if (await DisplayAlert("Disconnect device", "Do you want to disconnect the XBee device?", "Yes", "No"))
{
temperaturePageViewModel.DisconnectDevice();
}
};
}
}
/// <summary>
/// Class constructor. Instantiates a new <c>TemperaturePageViewModel</c> object with the
/// given Bluetooth device.
/// </summary>
/// <param name="device">Bluetooth device.</param>
public TemperaturePageViewModel(BleDevice device)
{
BleDevice = device;
IsRunning = false;
TemperatureValue = "-";
HumidityValue = "-";
ValuesColor = COLOR_DEFAULT;
}
public override bool Equals(object obj)
{
if (obj == null || GetType() != obj.GetType())
{
return(false);
}
BleDevice dev = (BleDevice)obj;
return(Id == dev.Id);
}
public void OnItemSelected(object sender, SelectedItemChangedEventArgs e)
{
BleDevice selectedDevice = e.SelectedItem as BleDevice;
// Clear selection.
((ListView)sender).SelectedItem = null;
if (selectedDevice == null)
{
return;
}
mainPageViewModel.StopScan();
mainPageViewModel.SelectedDevice = selectedDevice;
mainPageViewModel.AskForPassword(false);
}
/// <summary>
/// Class constructor. Instantiates a new <c>MainPageViewModel</c> object.
/// </summary>
public MainPageViewModel()
{
devices = new ObservableCollection <BleDevice>();
// Initialize Bluetooth stuff.
adapter = CrossBluetoothLE.Current.Adapter;
// Subscribe to device advertisements.
adapter.DeviceAdvertised += (object sender, DeviceEventArgs e) =>
{
BleDevice advertisedDevice = new BleDevice(e.Device);
// If the device is not discovered, add it to the list.
if (!Devices.Contains(advertisedDevice))
{
Devices.Add(advertisedDevice);
}
};
// Subscribe to device connection lost.
adapter.DeviceConnectionLost += (object sender, DeviceErrorEventArgs e) =>
{
if (SelectedDevice == null || CrossBluetoothLE.Current.State != BluetoothState.On)
{
return;
}
// Close the connection with the device.
SelectedDevice.XBeeDevice.Close();
// Return to main page and prompt the disconnection error.
Device.BeginInvokeOnMainThread(async() =>
{
await Application.Current.MainPage.Navigation.PopToRootAsync();
ShowErrorDialog("Device disconnected", "Bluetooth connection lost with the device.");
});
};
}
