c# - 如何从我的 Windows Phone 8 应用程序(XAML 和 C#)访问相机并将拍摄的照片保存在确定的文件夹中？

Question

我希望此时正在构建的 Windows Phone 8 应用程序能够在按下屏幕上的具体按钮时访问相机拍照，然后将已拍摄的图像保存到确定的 folfer(文件夹由我创建到 Windows Phone 项目中，而不是 Windows Phone 默认图像库)。

你能帮我访问相机，拍照并保存到我创建的文件夹中吗？我正在使用 XAML 和 C#。

非常感谢!!!

Answer 1

如果要在应用程序中的按钮上处理捕获，我会推荐 PhotoCamera 类

 PhotoCamera myCamera = new Microsoft.Devices.PhotoCamera(CameraType.Primary);
 //viewfinderBrush is a videobrush object declared in xaml
 viewfinderBrush.SetSource(myCamera);
 myCamera.Initialized += myCamera_Initialized;
 myCamera.CaptureCompleted += new EventHandler<CameraOperationCompletedEventArgs>(camera_CaptureCompleted);
 myCamera.CaptureImageAvailable += new EventHandler<Microsoft.Devices.ContentReadyEventArgs>(camera_CaptureImageAvailable);

//事件

   void myCamera_Initialized(object sender, CameraOperationCompletedEventArgs e)
    {
        try
        {
            if (e.Succeeded)
            {

            }
        }
        catch
        {
            MessageBox.Show("Problem occured in camera initialization.");
        }
    }

 void camera_CaptureCompleted(object sender, CameraOperationCompletedEventArgs e)
        {
            try
            {

            }
            catch
            {
                MessageBox.Show("Captured image is not available, please try again.");
            }
        }

void camera_CaptureImageAvailable(object sender, Microsoft.Devices.ContentReadyEventArgs e)
        {
            try
            {

            }
            catch (Exception ex)
            {
                MessageBox.Show("Captured image is not available, please try again.   " + ex.Message);
            }

        }

还有另一种选择叫做CameraCaptureTask

CameraCaptureTask cameraCaptureTask;
cameraCaptureTask = new CameraCaptureTask();
cameraCaptureTask.Completed += new EventHandler<PhotoResult>(cameraCaptureTask_Completed);
cameraCaptureTask.Show();

void cameraCaptureTask_Completed(object sender, PhotoResult e)
{
    if (e.TaskResult == TaskResult.OK)
    {
        MessageBox.Show(e.ChosenPhoto.Length.ToString());

        //Code to display the photo on the page in an image control named myImage.
        //System.Windows.Media.Imaging.BitmapImage bmp = new System.Windows.Media.Imaging.BitmapImage();
        //bmp.SetSource(e.ChosenPhoto);
        //myImage.Source = bmp;
    }
}

检查 this对于 PhotoCamera 类

和this对于 CameraCaptureTask