c# - 从IP摄像机，UWP获取位图图像

我想使用RaspberryPI3从IP摄像机获取图像，我编写了这段代码，但是当我单击“按钮”时，系统崩溃了，App.g.i.cs中抛出了异常，我该如何修复该代码？

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Net;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.Storage.Streams;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Media.Imaging;
using Windows.UI.Xaml.Navigation;
using Windows.Web.Http;


namespace App6
{
public sealed partial class MainPage : Page
{
    public MainPage()
    {
        this.InitializeComponent();
    }

    private async void Sample()
    {
        Windows.Storage.Streams.IRandomAccessStream random = await Windows.Storage.Streams.RandomAccessStreamReference.CreateFromUri(new Uri("http://192.168.1.253/SnapShotJPEG?Resolution=320x240&Quality=Motion")).OpenReadAsync();

        Windows.Graphics.Imaging.BitmapDecoder decoder = await Windows.Graphics.Imaging.BitmapDecoder.CreateAsync(random);
        Windows.Graphics.Imaging.PixelDataProvider pixelData = await decoder.GetPixelDataAsync();

        byte[] bytes = pixelData.DetachPixelData();


        BitmapImage image = new BitmapImage();
        using (InMemoryRandomAccessStream stream = new InMemoryRandomAccessStream())
        {
            await stream.WriteAsync(bytes.AsBuffer());
            stream.Seek(0);
            await image.SetSourceAsync(stream);
        }
            IpCamera_1.Source = image; //IpCamera_1 is Image.

    }

    private void Hello_Click(object sender, RoutedEventArgs e)
    {
        Sample();
    }
}
}

是否存在另一种解决方案，将视频从IP摄像机流传输到Raspberry-Pi？我正在使用Windows-10-iot-core。

最佳答案

因为您正在连接到本地网络，所以应该向Package.appxmanifest添加一些必需的功能。在解决方案资源管理器中右键单击该文件，选择View code，然后在<Capabilities>元素中添加以下内容：

<Capabilities>
  <Capability Name="internetClient" />
  <Capability Name="internetClientServer" />
  <Capability Name="privateNetworkClientServer" />
</Capabilities>

关于c# - 从IP摄像机，UWP获取位图图像，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/48915748/