[WP8.1] [c＃] [xaml]从SD卡获取文件&通过选择器进行内部存储 [英] [WP8.1][c#][xaml] getting files from SD card & internal storage through picker

问题描述

我使用下面的代码UWP版本没有任何问题，但在Windows Phone 8.1中显示为obselete，如何在选择SD卡或文件夹时获取所有文件，我在UWP中使用的代码应用程序低于

i am using below code UWP version with out any issues but in windows phone 8.1 it is showing as obselete, how can i get all files when SD card or a folder is selected, the code i am using in UWP apps is below

internal static async void GetFilesResult(string ftype)
{
            FolderPicker folderpicker = new FolderPicker();
            folderpicker.FileTypeFilter.Add("*");

            StorageFolder tmpfolder = await folderpicker.PickSingleFolderAsync();


QueryOptions options;

if (ftype == "Aud")
            {
                options = new QueryOptions(CommonFileQuery.DefaultQuery, new[] { ".mp3" });
                options.FolderDepth = FolderDepth.Deep;
                StorageFileQueryResult k = tmpfolder.CreateFileQueryWithOptions(options);

                var files = await k.GetFilesAsync();
            }
}

推荐答案

Hello kranthi88，

Hello kranthi88,

在Windows Phone 8.1中，此方法未实现。您应该使用
PickFolderAndContinue（）方法。可以在PickFolderAndContinue回调方法上检索该文件夹。

In windows phone 8.1, this method isn’t implemented. You should use PickFolderAndContinue() method. The folder could be retrieved on PickFolderAndContinue callback method.

public void ContinueFolderPicker(FolderPickerContinuationEventArgs args)
        {
            StorageFolder folder = args.Folder;
            if (folder != null)
            {
                // Application now has read/write access to all contents in the picked folder (including other sub-folder contents)
                StorageApplicationPermissions.FutureAccessList.AddOrReplace("PickedFolderToken", folder);
                OutputTextBlock.Text = "Picked folder: " + folder.Name;
            }
            else
            {
                OutputTextBlock.Text = "Operation cancelled.";
            }
        }

 

您可以从以下网址查看更多详细信息：  文件选择器示例

最好的问候，

Xavier Eoro

Xavier Eoro

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