thumbnailLink不会使用iOS Google Drive API返回任何文件 [英] thumbnailLink not returning for anyfile using iOS Google Drive API

问题描述

理想情况下，我想显示存储在用户Google云端硬盘上的图片的缩略图。我使用的代码是：

$ pre $ GT $查询=
query.pageSize = 50;
query.fields = @nextPageToken，文件（id，name，thumbnailLink，imageMediaMetadata）;
query.q = @（mimeType ='image / jpeg'或mimeType ='image / png'）;
[self.service executeQuery：query
delegate：self
didFinishSelector：@selector（displayResultWithTicket：finishedWithObject：error :)];

不幸的是，即使我删除了mimetype条件（列出所有文件），返回的GTLDrive记录也不包含thumbnailLink 。有什么我错过了吗？

解决方案

简单的解决方案是，l使用了不正确的作用域，这意味着API只能访问驱动器元数据。将范围更新为以下解决了我的问题：

  https://www.googleapis.com/auth/drive.photos。只读
  

Ideally l want to display the thumbnails for images stored on a users Google Drive. The code l'm using is:

GTLQueryDrive *query = [GTLQueryDrive queryForFilesList];
query.pageSize = 50;
query.fields = @"nextPageToken, files(id, name, thumbnailLink, imageMediaMetadata)";
query.q = @"(mimeType='image/jpeg' or mimeType='image/png')";
[self.service executeQuery:query
                  delegate:self
       didFinishSelector:@selector(displayResultWithTicket:finishedWithObject:error:)];

Unfortunately even if l remove the mimetype condition (to list ALL files), no GTLDrive record returned contains thumbnailLink. Is there something l'm missing?

解决方案

Simple solution, l was using the incorrect scope, which meant the API only had access to the Drives metadata. Updating the scope to the following solved my issue:

https://www.googleapis.com/auth/drive.photos.readonly

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