CameraCaptureTask的用法

首先要引用相关的名字空间：using Microsoft.Phone.Tasks;

然后在Page里定义一个变量：CameraCaptureTask cameraCaptureTask;
然后要在Page的Constructor里添加实例化和关联Completed事件处理方法：

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

如下代码所示：

    public partial class MainPage : PhoneApplicationPage
    {
        CameraCaptureTask cameraCaptureTask;

        // Constructor
        public MainPage()
        {
            InitializeComponent();
            cameraCaptureTask = new CameraCaptureTask();
            cameraCaptureTask.Completed += new EventHandler<PhotoResult>(cameraCaptureTask_Completed);
        }
}

 

 

然后写Completed事件处理方法：

 

        void cameraCaptureTask_Completed(object sender, PhotoResult e)
        {
            if (e.TaskResult == TaskResult.OK)
            {
                BitmapImage bmp = new BitmapImage();
                bmp.SetSource(e.ChosenPhoto);

                //save the captured photo to settings
                (Application.Current as App).photoTaked = new BitmapImage();
                (Application.Current as App).photoTaked = bmp;
                //MessageBox.Show(e.OriginalFileName);
            }
            else
            {
                (Application.Current as App).photoTaked = null;
            }
        }

 

 

然后是在调用摄像头的地方加入show()方法：

        void retake_Click(object sender, EventArgs e)
        {
            cameraCaptureTask.Show();
        }