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如何在Windows 10移動應用中使用LumiaImagingSDK.UWP 3.0?

[英]How to work with LumiaImagingSDK.UWP 3.0 in windows 10 mobile app?

我使用適用於Windows 10的應用程序。我試圖制作一個用於圖像編輯的應用程序。

var client = new HttpClient();
var stream = await client.GetStreamAsync(ImageUrl);
var source = new StreamImageSource(stream);
var info = await source.GetInfoAsync();

我在var source = new StreamImageSource(stream);行中收到錯誤

引發異常:Lumia.Imaging.Managed.dll中的“ System.IO.FileNotFoundException”

引發異常:mscorlib.ni.dll中的“ System.IO.FileNotFoundException”

RenderImage錯誤:找不到指定的模塊。 (來自HRESULT的異常:0x8007007E)

我究竟做錯了什么? 我使用LumiaImagingSDK.UWP 3.0。

Imaging SDK的StreamImageSource ctor支持的格式為:Jpeg Png Gif Bmp Wbmp Tiff

檢查您的URL是否正確,並指向這些圖像格式之一。

正如我們在評論中討論的那樣,您想模糊圖像,並且LumiaImagingSDK.UWP 3.0中有內置的BlurEffect類 ,我使用這種效果在此處編寫了一個演示:

<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
    <Grid.RowDefinitions>
        <RowDefinition Height="500" />
        <RowDefinition Height="50" />
    </Grid.RowDefinitions>
    <Grid Grid.Row="0">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*" />
            <ColumnDefinition Width="*" />
        </Grid.ColumnDefinitions>
        <Image x:Name="originalimg" Grid.Column="0" />
        <SwapChainPanel x:Name="SwapChainPanelTarget" Grid.Column="1" />
    </Grid>
    <Button Content="Click Me" Click="Button_Click" Grid.Row="1" HorizontalAlignment="Center" />
</Grid>

后面的代碼:

private async void Button_Click(object sender, RoutedEventArgs e)
{
    Uri uri = new Uri("xxxx(uri address)");
    using (HttpClient client = new HttpClient())
    {
        try
        {
            HttpResponseMessage response = await client.GetAsync(uri);
            if (response != null && response.StatusCode == HttpStatusCode.Ok)
            {
                string filename = "test.jpg";
                var imageFile = await ApplicationData.Current.LocalFolder.CreateFileAsync(filename, CreationCollisionOption.ReplaceExisting);
                using (IRandomAccessStream stream = await imageFile.OpenAsync(FileAccessMode.ReadWrite))
                {
                    await response.Content.WriteToStreamAsync(stream);
                }
                StorageFile file = await ApplicationData.Current.LocalFolder.GetFileAsync(filename);

                //show original image in the Image control
                IRandomAccessStream inputStream1 = await file.OpenReadAsync();
                BitmapImage bitmap = new BitmapImage();
                bitmap.SetSource(inputStream1);
                originalimg.Source = bitmap;

                //use the blureffect
                IRandomAccessStream inputStream = await file.OpenReadAsync();
                BlurEffect blureffect = new BlurEffect();
                inputStream.Seek(0);
                blureffect.Source = new Lumia.Imaging.RandomAccessStreamImageSource(inputStream);
                var render = new SwapChainPanelRenderer(blureffect, SwapChainPanelTarget);
                await render.RenderAsync();
            }
        }
        catch
        {
        }
    }
}

我每次都將圖像存儲在本地文件夾中,並且使用Windows.Web.Http命名空間 ,而不是System.Net.Http命名空間 由於無法解決您的問題,因此可以將圖像保存到文件並在此處讀取文件流。

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