Photocapture設備相機掛在Windows Phone 8

Question

我正在開發Windows Phone 8中的應用程序。基本上在我的應用程序中，我使用PhotoCaptureDevice API來拍攝快照並掃描條碼。當我繼續使用硬件後退按鈕返回到相機頁面時，有時相機頁面會掛起，無法繼續進行。

The code snippet used is : 

//Passing Videobrush to PhotoCapturedevice 

VideoBrush brush; 

brush.SetSource(_device); 

//PhotoCapture Device Intialization 

internal PhotoCaptureDevice _device; 

CameraSensorLocation cameraLocation; 

    if (PhotoCaptureDevice.AvailableSensorLocations.Contains(CameraSensorLocation.Back)) 
    { 
      var supportedResolutions = PhotoCaptureDevice.GetAvailableCaptureResolutions(CameraSensorLocation.Back); 
      _initRes = GetBestResolution(supportedResolutions); 
      cameraLocation = CameraSensorLocation.Back; 

    } 
    else if (PhotoCaptureDevice.AvailableSensorLocations.Contains(CameraSensorLocation.Front)) 
    { 
      var supportedResolutions = PhotoCaptureDevice.GetAvailableCaptureResolutions(CameraSensorLocation.Front); 
      _initRes = GetBestResolution(supportedResolutions); 
      cameraLocation = CameraSensorLocation.Front; 

    } 

你能幫我在這

Answer 1

調用brush.SetSource（_device）之前，您必須初始化捕捉對象;