Question

我正在尝试在Windows Phone 8.1的Runtime项目上打开FolderPicker，但是当我打电话时

await folderPicker.PickSingleFolderAsync();

我明白了：

不支持该请求。（来自HRESULT的异常：0x80070032）

这是完整的方法：

public async void openfolder()
        {
            FolderPicker folderPicker = new FolderPicker();
            folderPicker.SuggestedStartLocation = PickerLocationId.Desktop;
            folderPicker.ViewMode = PickerViewMode.List;
            folderPicker.FileTypeFilter.Add(".txt");
            StorageFolder folder = await folderPicker.PickSingleFolderAsync();
        }

该方法只被触发一次。请帮忙，谢谢，抱歉英语不好。

Answer 1

我解决了我的问题：在Windows Phone 8.1上

FolderPicker folderPicker = new FolderPicker();
folderPicker.SuggestedStartLocation = PickerLocationId.Desktop;
folderPicker.ViewMode = PickerViewMode.List;
folderPicker.FileTypeFilter.Add(".txt");
folderPicker.PickFolderAndContinue();

我必须使用PickFolderAndContinue（）而不是PickSingleFolderAsync（）

现在一切正常。

Answer 2

根据功能描述＆＃34; PickSingleFolderAsync＆＃34;在visual studio中说＆＃34; [已弃用]未在Windows Phone 8.1＆＃34;。

中实现

FolderPicker PickSingleFolderAsync（）后不支持该请求

2 个答案: