在运行时c＃（uwp）上向资源添加图像-Java 学习之路

我正在尝试制作添加图像功能 . 用户可以上传项目的图片，并将该图片添加到项目的资产中以备将来使用 . 这是我的代码：

private async void PickAFileButton_ClickAsync(object sender, RoutedEventArgs e)
    {
        FileOpenPicker openPicker = new FileOpenPicker();
        openPicker.ViewMode = PickerViewMode.Thumbnail;
        openPicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
        openPicker.FileTypeFilter.Add(".jpg");
        openPicker.FileTypeFilter.Add(".jpeg");
        openPicker.FileTypeFilter.Add(".png");

        StorageFile file = await openPicker.PickSingleFileAsync();
        if (file != null)
        {
            // Application now has read/write access to the picked file
            String a = "ms-appx:///Assets/" + file.Name;
            theItem.Source = new BitmapImage(new Uri(a));
        }
        else
        {
            theImage.Text = "Operation cancelled.";
        }
    }

如何将给定的图片添加到项目的assets文件夹中，以便我可以在侧面显示它，并将其用于其他内容？

我将非常感谢任何帮助 .

1 回答

如何将给定图片添加到项目的assets文件夹中

uwp项目的assets文件夹只在运行时模型中读取，我们无法在运行时添加图片 . 我们建议使用Local文件夹替换 Assets 文件夹 .

private async void PickAFileButton_ClickAsync(object sender, RoutedEventArgs e)
{
    FileOpenPicker openPicker = new FileOpenPicker();
    openPicker.ViewMode = PickerViewMode.Thumbnail;
    openPicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
    openPicker.FileTypeFilter.Add(".jpg");
    openPicker.FileTypeFilter.Add(".jpeg");
    openPicker.FileTypeFilter.Add(".png");

    StorageFile file = await openPicker.PickSingleFileAsync();
    if (file != null)
    {   await file.CopyAsync( ApplicationData.Current.LocalFolder );
        // Application now has read/write access to the picked file
        String a = "ms-appdata:///local/" + file.Name;
        theItem.Source = new BitmapImage(new Uri(a));
    }
    else
    {
        theImage.Text = "Operation cancelled.";
    }
}

回复于 2024-05-19T06:29:33+08:00

在运行时c＃（uwp）上向资源添加图像

1 回答

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