c# - Windows Phone 8.1 相机初始化 - UnAuthorizedException

Question

我正在尝试在我的 Windows Phone 8.1 通用应用程序上使用 MediaCapture api 启动相机。该代码在 Windows 8.1 和 Windows Phone 8.1 模拟器上运行良好。我可以启动相机并拍照。

但它会在 Windows Phone 8.1 设备上引发 UnauthorizedException。问了类似的问题Here

但是，我不知道是否有人解决了这个问题。我正在设备上加载应用程序以进行测试。我的要求是在旁加载应用程序上启动相机。

代码片段:

初始化 MediaCapture:

                DeviceInformation cameraDevice = await GetCameraID();
                if (cameraDevice != null)
                {
                    mMediaManager_ = new Windows.Media.Capture.MediaCapture();
                    var settings = new Windows.Media.Capture.MediaCaptureInitializationSettings();
                    settings.StreamingCaptureMode = Windows.Media.Capture.StreamingCaptureMode.Video;
                    settings.MediaCategory = Windows.Media.Capture.MediaCategory.Other;
                    settings.AudioProcessing = Windows.Media.AudioProcessing.Default;
                    settings.VideoDeviceId = cameraDevice.Id;                       

                    await mMediaManager_.InitializeAsync(settings);
                    mMediaManager_.RecordLimitationExceeded += new Windows.Media.Capture.RecordLimitationExceededEventHandler(RecordLimitationExceeded);
                    mMediaManager_.Failed += new Windows.Media.Capture.MediaCaptureFailedEventHandler(RecordFailed);

                }

拍照:

                mMediaStorageFile_ = await folder.CreateFileAsync(fileName, CreationCollisionOption.GenerateUniqueName);
                ImageEncodingProperties imageProperties = ImageEncodingProperties.CreateJpeg();
                await mMediaManager_.CapturePhotoToStorageFileAsync(imageProperties, mMediaStorageFile_);                   
                mCameraScreen_.setPreviewImage(mMediaStorageFile_);

Answer 1

似乎这个错误已在上次更新中得到纠正。

正如我在开发者预览版 8.10.14176.243 上测试过的那样，MediaCapture.InitializeAsync 现在应该可以正常工作了。