Question

使用UWP应用程序。该应用程序的一部分是根据打包成Zip文件的图片创建主题。这是文件选择器和解压缩过程。

private async void FilePickerWallpaperDynamic(object sender, RoutedEventArgs e)
{
    try
    {
        FileOpenPicker pickerWallpaperDynamic = new FileOpenPicker
        {
            ViewMode = PickerViewMode.Thumbnail,
            SuggestedStartLocation = PickerLocationId.PicturesLibrary
        };
        pickerWallpaperDynamic.FileTypeFilter.Add(".zip");

        StorageFolder localFolder = Windows.Storage.ApplicationData.Current.LocalFolder;
        StorageFolder createdynamicFolder = await localFolder.CreateFolderAsync("Dynamic", CreationCollisionOption.OpenIfExists);
        StorageFolder dynamicFolder = await localFolder.GetFolderAsync("Dynamic");
        StorageFile fileName = await pickerWallpaperDynamic.PickSingleFileAsync();
        if (fileName != null)
        {
            selectedDynamicThemeName = Path.GetFileNameWithoutExtension(fileName.Name);
            StorageFolder addedTheme = await dynamicFolder.CreateFolderAsync(selectedDynamicThemeName, CreationCollisionOption.ReplaceExisting);
            await ExtractToDirectoryAsync(fileName.Path, addedTheme.Path);
        }
        else
        {

        }
    }
    catch (Exception exception)
    {
    }
}


public static async Task ExtractToDirectoryAsync(string zipFilePath, string destinationDir)
{
    await Task.Run(() => ZipFile.ExtractToDirectory(zipFilePath, destinationDir));
}

该应用程序已成功设置正确的路径和名称。但是，当从内部存储器的本地库中选择一个zip文件时，我会看到一条消息，指出访问被拒绝。从可移动存储中尝试时，应用程序崩溃。

Answer 1

问题在于该文件太大，无法使用Zip函数。这是要走的路：

settings.Values["Theme"] = selectedDynamicThemeName;
Stream themeZipFile = await fileName.OpenStreamForReadAsync(); ;
ZipArchive archive = new ZipArchive(themeZipFile);

如何在内部提取ZIP文件并将新名称添加到Observable Collection？

1 个答案: