Question

我正在使用Xam.Plugin.GeoLocator获取当前位置，但是它引发了下面提到的异常：

Theme.AppCompat.Light.DarkActionBar

我的代码在较低的android版本中运行良好，仅在像oreo这样的较高版本中出现问题。

我已经尝试Xamarin form Geolocation task cancelled exception了，但是对我没有用。

{System.Threading.Tasks.TaskCanceledException: A task was canceled.
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x00026] in <43dbbdc147f2482093d8409abb04c233>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <43dbbdc147f2482093d8409abb04c233>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <43dbbdc147f2482093d8409abb04c233>:0 
  at System.Runtime.CompilerServices.TaskAwaiter`1[TResult].GetResult () [0x00000] in <43dbbdc147f2482093d8409abb04c233>:0 
  at Plugin.Geolocator.GeolocatorImplementation+<GetPositionAsync>d__41.MoveNext () [0x004d3] in <e6cb69436f5b455fa0a66dc46ca4b792>:0 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0001a] in <43dbbdc147f2482093d8409abb04c233>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <43dbbdc147f2482093d8409abb04c233>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <43dbbdc147f2482093d8409abb04c233>:0 
  at System.Runtime.CompilerServices.TaskAwaiter`1[TResult].GetResult () [0x00000] in <43dbbdc147f2482093d8409abb04c233>:0 
  at MyApp.Droid.GetCurrentLocation+<SetLocation>d__2.MoveNext () [0x00089] in .cs:58 }

我的AndroidManifest代码：

    public async static void SetLocation()
    {
        var locator = CrossGeolocator.Current;
        locator.DesiredAccuracy = 50;
        if (locator.IsGeolocationAvailable && locator.IsGeolocationEnabled)
        {
            try
            {
                var position = await locator.GetPositionAsync(TimeSpan.FromMilliseconds(1000));
                var Latitude = position.Latitude;
                var Longitude = position.Longitude;
                currentLocation = Latitude + "," + Longitude;
            }
            catch (Exception ex)
            {
                return;
            }
        }
    }
}

我已经提供了运行时权限。

 <uses-sdk android:minSdkVersion="15" android:targetSdkVersion="22" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_INTERNAL_STORAGE" />
 <uses-permission android:name="android.permission.READ_INTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_USER_DICTIONARY" />
<uses-permission android:name="android.permission.WRITE_USER_DICTIONARY" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.FLASHLIGHT" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
 <uses-feature android:name="android.hardware.location.gps" />
 <uses-feature android:name="android.hardware.location.network" />

<application android:label="IRMS">
    <provider android:name="android.support.v4.content.FileProvider"
         android:authorities="com.myapp.test.fileprovider"
         android:exported="false"
         android:grantUriPermissions="true">
     <meta-data android:name="android.support.FILE_PROVIDER_PATHS"
     android:resource="@xml/file_paths"></meta-data>
   </provider>

 </application>

Xam.Plugin.GeoLocator中的System.Threading.Tasks.TaskCanceledException

0 个答案: