windows8 指南針感應器

指南針感應器樣本這個樣本示範了如何使用Windows.Devices.Sensors。 指南針的API。這個樣本允許使用者查看羅盤讀數作為一個magnetic-north,根據安裝感應器,一個true-north價值。你可以選擇一個或兩個方案:•指南針資料事件•當前羅盤讀數 private void ReadingChanged(object sender, CompassReadingChangedEventArgs e)
        {
            Dispatcher.InvokeAsync(CoreDispatcherPriority.Normal, (s, a) =>
            {
                CompassReading reading = (a.Context as CompassReadingChangedEventArgs).Reading;
                Scenario1Output_MagneticNorth.Text = String.Format("{0,5:0.00}", reading.HeadingMagneticNorth);
                if (reading.HeadingTrueNorth != null)
                {
                    Scenario1Output_TrueNorth.Text = String.Format("{0,5:0.00}", reading.HeadingTrueNorth);
                }
                else
                {
                    Scenario1Output_TrueNorth.Text = "No data";
                }
            }, this, e);

        } 

 完整樣本:/Files/risk/windows8/指南針感應器sample.rar