获取文件列表在谷歌驱动器中的特定文件夹 [英] Get list of files from a specific folder in google drive

问题描述

我使用谷歌Play服务SDK。

I am using Google Play Services SDK.

和尝试演示从开发者网站。

有没有办法从一个特定的文件夹得到（下载）的所有文件？

Is there a way to get(download) all the files from a specific folder?

任何指针将有很大的帮助。整个样本code似乎不完整的。

Any pointer will be of great help. The whole sample code doesn't seem to be complete.

推荐答案

下面是做类似的东西（必须在非UI线程中运行）方法的等待的版本。

Here is the 'await' version of a method that does something similar (must be run on non-ui thread).

//  list / search all non-trashed files in a folder (globally if 'fldr' is null) 
GoogleApiClient _gac;
public void findAll(String title, String mime, DriveFolder fldr) {
  ArrayList<Filter> fltrs = new ArrayList<Filter>();
  fltrs.add(Filters.eq(SearchableField.TRASHED, false));
  if (title != null)  
    fltrs.add(Filters.eq(SearchableField.TITLE, title));
  if (mime != null)  
    fltrs.add(Filters.eq(SearchableField.MIME_TYPE, mime));
  Query qry = new Query.Builder().addFilter(Filters.and(fltrs)).build(); 
  MetadataBufferResult rslt = (fldr == null) ? Drive.DriveApi.query(_gac, qry).await() : 
                                               fldr.queryChildren(_gac, qry).await();
  if (rslt.getStatus().isSuccess()) {
    MetadataBuffer mdb = null;
    try { 
      mdb = rslt.getMetadataBuffer();
      if (mdb == null) return null;
      for (Metadata md : mdb) {
        if ((md == null) || (!md.isDataValid()) || md.isTrashed()) continue;
        // md gives you the file info    
      }
    } finally { if (mdb != null) mdb.close(); } 
  }
}

希望它能帮助，对的 Github上这里，但我还没有碰过它一段时间了（即无担保）。

Hope it helps, there is a bunch of code on the same theme on Github here, but I haven't touched it for awhile now (i.e. no warranties).

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