使用 Google Drive Api 列出 GDrive 的文件和文件夹 [英] Listing files and folders of GDrive using Google Drive Api

问题描述

我想使用 Google Drive API 列出 Google Drive 上某个目录的所有文件和文件夹.但我只得到文件的元数据对象，而不是目录中存在的文件夹.我正在使用以下代码

I want to list all files and folders of a directory on Google Drive using Google Drive API. But I am only getting Metadata object of files not of the folders present in the directory. I am using the following code

DriveFolder folder = Drive.DriveApi.getRootFolder(getClient());
folder.listChildren(getClient())
 .setResultCallback(new ResultCallback < DriveApi.MetadataBufferResult > () {@
     Override
     public void onResult(DriveApi.MetadataBufferResult result) {
         if (!result.getStatus().isSuccess()) {
             L.c("Error in listing root folder");
             return;
         }
         MetadataBuffer metadataBuffer = result.getMetadataBuffer();
         Metadata filedata;
         ListItem[] items = new ListItem[metadataBuffer.getCount()];
         L.c("Count :" + metadataBuffer.getCount());
         for (int i = 0; i < metadataBuffer.getCount(); i++) {
             items[i] = new ListItem(metadataBuffer.get(i));
         }
         listAdapter = new ArrayAdapter < ListItem > (ExplorerClass.this, android.R.layout.simple_list_item_1, items);
         mainList.setAdapter(listAdapter);
     }
 });

推荐答案

如果目录中的文件夹或文件(在您的情况下为根目录)不是由您的应用程序创建或之前由您的应用程序打开，您将不会能够通过您的应用程序看到它们.这是因为您可能正在使用 Drive.FILE 范围:https://developers.google.com/drive/web/scopes

If the folders or files present in the directory (in your case root) were not created by your app or opened by your app before, you won't be able to see them with your app. This is because you are probably using Drive.FILE scope: https://developers.google.com/drive/web/scopes

不幸的是，google drive android API 目前仅支持 drive.file 和 drive.appfolder 范围.如果您需要 drive.readonly.metadata 范围，您可以使用 Google Drive REST API.

Unfortunately, the google drive android API currently supports only drive.file and drive.appfolder scopes. You can use the Google Drive REST API if you need drive.readonly.metadata scope.

这篇关于使用 Google Drive Api 列出 GDrive 的文件和文件夹的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！