Windows phone 崩溃 device.Sensors.ni.dll

Question

我的应用程序（有点类似于指南针应用程序）出现崩溃。 windows 崩溃报告告诉我：

frame 0: 
Microsoft.Devices.Sensors.ni.dll; Microsoft.Devices.Sensors.Accelerometer.Start; 0x0000006c    
frame 1:
PivotApp1.ni.DLL; PivotApp1.MainPage+_start_d__0.MoveNext; 0x000001d4    
frame 2: 
mscorlib.ni.dll; System.Runtime.CompilerServices.AsyncMethodBuilderCore._ThrowAsync_b__3; 0x00000036

我无法理解这里的确切含义。根据我从中得到的信息，这可能是因为加速度计。

这是我当前的代码，似乎错误是从这里的某个地方产生的：

private async void start()
    {
        //Check for the user agreement in use his position. If not, method returns.
        if ((bool)IsolatedStorageSettings.ApplicationSettings["LocationConsent"] != true)
        {
            // The user has opted out of Location.

            MessageBox.Show(AppResources.main_cantuse);

            Application.Current.Terminate();
        }

        else
        {
            //KOMPASS
            if (compass == null)
            {
                // Instantiate the compass.
                compass = new Compass();

                // Specify the desired time between updates. The sensor accepts
                // intervals in multiples of 20 ms.
                compass.TimeBetweenUpdates = TimeSpan.FromMilliseconds(20);

                compass.CurrentValueChanged +=
                new EventHandler<SensorReadingEventArgs<CompassReading>>(compass_CurrentValueChanged);
                compass.Calibrate +=
                new EventHandler<CalibrationEventArgs>(compass_Calibrate);
            }

            try
            {
                compass.Start();
                timer.Start();

                accelerometer = new Accelerometer();
                accelerometer.CurrentValueChanged +=
                    new EventHandler<SensorReadingEventArgs<AccelerometerReading>>(accelerometer_CurrentValueChanged);
                accelerometer.Start();
            }
            catch (InvalidOperationException)
            {
                MessageBox.Show(AppResources.main_unabletostart);                    
            }

我想问一下，我是否必须检查加速度计是否准备就绪（或空检查或其他）？

如有任何帮助或指导，我们将不胜感激。

Answer 1

这些崩溃可能来自没有指南针的设备（是的，有这样的设备）。

你应该用 Compass.IsSupported 检查罗盘，只有当 returns 为真时才使用它。

Windows phone 崩溃 device.Sensors.ni.dll

Windows phone crash device.Sensors.ni.dll

c#

crash

windows-phone-8.1