Windows Phone 8.1中的屏幕录制

Question

我正在开发Windows Phone 8.1应用程序。此应用程序的工作是记录屏幕活动并将mp4文件存储在存储中。我没有得到任何编译时错误。但

var screenCapture = ScreenCapture.GetForCurrentView();

行返回我UnauthorizedAccessException。我已经为Microphone和Webcam添加了清单文件的功能。我也尝试在页面构造函数和单独的类中调用此代码。我在Windows Phone 8.1操作系统中使用HTC 8x设备

以下是我的代码块：

async private void Button_Tapped(object sender, TappedRoutedEventArgs e)
{
                var screenCapture = ScreenCapture.GetForCurrentView();

                mediaCapture = new MediaCapture();
                await mediaCapture.InitializeAsync(new MediaCaptureInitializationSettings
                {
                    VideoSource = screenCapture.VideoSource,
                    AudioSource = screenCapture.AudioSource,
                });

                var file = await KnownFolders.VideosLibrary.CreateFileAsync("screenrecording.mp4", CreationCollisionOption.ReplaceExisting);
                await mediaCapture.StartRecordToStorageFileAsync(MediaEncodingProfile.CreateMp4(VideoEncodingQuality.Auto), file);

                //sr.StartRecording();}

我提到了这个：http://msdn.microsoft.com/en-us/library/windows/apps/xaml/dn642093.aspx 我也读过这个：https://social.msdn.microsoft.com/Forums/sqlserver/en-US/8840d597-34ad-497f-9a5b-ea1cab6057f9/unauthorizedaccessexception-with-windowsmediacapturescreencapturegetforcurrentview?forum=winappswithcsharp

Answer 1

您还需要检查访问视频库的功能。

希望这有帮助！