Android Drive API getWebViewLink 返回 null

Question

我正在尝试使用 Android 应用程序和 Drive API 以编程方式在驱动器上创建文件，然后创建一个公共链接。我设法制作了文件，但 getWebViewLink、getAlternateLink、getEmbedLink 总是返回 null。我想不通，也没有找到任何有用的文档。

我的代码：

private GoogleSignInClient buildGoogleSignInClient() {
        GoogleSignInOptions signInOptions =
                new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                        .requestScopes(Drive.SCOPE_APPFOLDER)
                        .requestServerAuthCode(AUTH_CODE)
                        .build();
        return GoogleSignIn.getClient(this, signInOptions);
    }

private void createFile() {
final Task<DriveFolder> rootFolderTask = mDriveResourceClient.getRootFolder();
        final Task<DriveContents> createContentsTask = mDriveResourceClient.createContents();
        Tasks.whenAll(rootFolderTask, createContentsTask)
                .continueWithTask(task -> {
                    DriveFolder parent = rootFolderTask.getResult();
                    DriveContents contents = createContentsTask.getResult();
                    OutputStream outputStream = contents.getOutputStream();
                    try (Writer writer = new OutputStreamWriter(outputStream)) {
                        writer.write("Hello World 1!");
                    }
                    MetadataChangeSet changeSet = new MetadataChangeSet.Builder()
                            .setTitle("HelloWorld 1.txt")
                            .setMimeType("text/plain")
                            .setStarred(true)
                            .build();
                    return mDriveResourceClient.createFile(parent, changeSet, contents);

                })
                .addOnSuccessListener(this,
                        driveFile -> {
                            Log.d(TAG, "file created");
                            getMetaData(driveFile);

                        })
                .addOnFailureListener(this, e -> {
                    Log.e(TAG, "Unable to create file", e);

                });
    }

    private void getMetaData(DriveFile driveFile) {
        Task<Metadata> metadataTask = mDriveResourceClient.getMetadata(driveFile);
        metadataTask
                .addOnSuccessListener(this,
                        metadata -> {
                            Log.e(TAG, "metadata.getWebViewLink() " + metadata.getWebViewLink());
                        })
                .addOnFailureListener(this, e -> {
                    Log.d(TAG, "Unable to retrieve metadata", e);

                });
    }

Answer 1

您可以参考这个link。建议在files属性中添加webViewLink。

$files = $drive->files->listFiles(array(
      'q' => "'root' in parents",
      'fields' => 'nextPageToken, files(id, name, webViewLink, mimeType)'
))->getFiles();