Gyrometer.ReadingChanged Evento

Definição

Namespace:

Windows.Devices.Sensors

Ocorre sempre que o girômetro relata a leitura atual do sensor.

// Register
event_token ReadingChanged(TypedEventHandler<Gyrometer, GyrometerReadingChangedEventArgs const&> const& handler) const;

// Revoke with event_token
void ReadingChanged(event_token const* cookie) const;

// Revoke with event_revoker
Gyrometer::ReadingChanged_revoker ReadingChanged(auto_revoke_t, TypedEventHandler<Gyrometer, GyrometerReadingChangedEventArgs const&> const& handler) const;

public event TypedEventHandler<Gyrometer,GyrometerReadingChangedEventArgs> ReadingChanged;

function onReadingChanged(eventArgs) { /* Your code */ }
gyrometer.addEventListener("readingchanged", onReadingChanged);
gyrometer.removeEventListener("readingchanged", onReadingChanged);
- or -
gyrometer.onreadingchanged = onReadingChanged;

Public Custom Event ReadingChanged As TypedEventHandler(Of Gyrometer, GyrometerReadingChangedEventArgs) 

Tipo de evento

TypedEventHandler<Gyrometer,GyrometerReadingChangedEventArgs>

Exemplos

O exemplo a seguir demonstra como um aplicativo UWP criado com C# e XAML registra seu manipulador de eventos ReadingChanged .

private void ScenarioEnable(object sender, RoutedEventArgs e)
{
    if (_gyrometer != null)
    {
        // Establish the report interval
        _gyrometer.ReportInterval = _desiredReportInterval;

        Window.Current.VisibilityChanged += new WindowVisibilityChangedEventHandler(VisibilityChanged);
        _gyrometer.ReadingChanged += new TypedEventHandler<Gyrometer, GyrometerReadingChangedEventArgs>(ReadingChanged);

        ScenarioEnableButton.IsEnabled = false;
        ScenarioDisableButton.IsEnabled = true;
    }
    else
    {
        rootPage.NotifyUser("No gyrometer found", NotifyType.StatusMessage);
    }
}

O exemplo a seguir mostra o manipulador de eventos ReadingChanged.

async private void ReadingChanged(object sender, GyrometerReadingChangedEventArgs e)
{
    await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
    {
        GyrometerReading reading = e.Reading;
        ScenarioOutput_X.Text = String.Format("{0,5:0.00}", reading.AngularVelocityX);
        ScenarioOutput_Y.Text = String.Format("{0,5:0.00}", reading.AngularVelocityY);
        ScenarioOutput_Z.Text = String.Format("{0,5:0.00}", reading.AngularVelocityZ);
    });
}

Comentários

Um aplicativo pode registrar esse manipulador de eventos para obter leituras de sensor. O aplicativo deve estabelecer um ReportInterval desejado. Isso informa ao driver do sensor que os recursos devem ser alocados para atender aos requisitos do aplicativo.

Os aplicativos podem definir a frequência desse evento definindo a propriedade ReportInterval .