GData Picasa 相册 iPhone

Question

我希望有人能帮助我解决这个问题。我正在尝试从我的 iPhone 应用程序访问 Picasa 网络相册。我之前曾将 GData 与 Google Calendar 一起使用，并获取事件和与之相关的数据，因此我以类似的方式设置了我的方法。然而，我收到一个错误，告诉我以下内容

serviceBase:<GDataServiceGooglePhotos: 0x4d4e6d0> objectFetcher:<GDataHTTPFetcher: 0xbaa35c0> failedWithStatus:400 data:Too many results requested

我认为我已经缩小了与我正在使用的票有关的问题范围，在下面的行中

ticket = [service fetchFeedWithURL:[NSURL URLWithString:kGDataGooglePhotosAllFeed]
                          delegate:self
                 didFinishSelector:@selector(photosListTicket:finishedWithFeed:error:)];

我但是我无法解决这个问题。有谁有解决这个问题的建议。我做错了什么吗？

我用于检索图片的完整代码如下所示。凡是有 picAlbum 的地方，都是一个预定义的 NSArray 来保存信息。

- (GDataServiceGooglePhotos *)photoService {

    static GDataServiceGooglePhotos* service = nil;
    if (!service) {
        service = [[GDataServiceGooglePhotos alloc] init];
        [service setShouldCacheDatedData:YES];
        [service setServiceShouldFollowNextLinks:YES];
    }

    [service setUserCredentialsWithUsername:@"username"
                                   password:@"password"];
    return service;
}


-(void)loadGooglePhotos {
    [self fetchAllPhotos];
}

-(void)fetchAllPhotos {
    NSLog(@"In fetchAllPhotos");
    GDataServiceGooglePhotos *service = [self photoService];
    GDataServiceTicket *ticket;

    ticket = [service fetchFeedWithURL:[NSURL URLWithString:kGDataGooglePhotosKindAlbum]
                              delegate:self
                     didFinishSelector:@selector(photosListTicket:finishedWithFeed:error:)];
}

- (void)photosListTicket:(GDataServiceTicket *)ticket finishedWithFeed:(GDataFeedPhotoAlbum *)feed error:(NSError *)error {

    NSLog(@"In photosListTicket");
    NSArray *photos = [feed entries];
    if ([photos count] != 0){
        self.picAlbum = [photos objectAtIndex:0];
        NSLog(@"fetching photos");
        [self fetchPhotos];
    }
    else {
        NSLog(@"User has no photos...");
    }
}

- (void)fetchPhotos {

    NSLog(@"In fetchPhotos");
    if (self.picAlbum) {
        NSURL *feedURL = [[self.picAlbum alternateLink] URL];
        if (feedURL) {
            NSLog(feedURL);
            GDataQueryGooglePhotos *query = [GDataQueryGooglePhotos photoQueryWithFeedURL:feedURL];
            [query setMaxResults:1000];
            GDataServiceGooglePhotos *service = [self photoService];
            GDataServiceTicket *ticket;
            ticket = [service fetchFeedWithQuery:query delegate:self didFinishSelector:@selector(photosEventsTicket:finishedWithFeed:error:)];
        }
    }
}

- (void)photosEventsTicket:(GDataServiceTicket *)ticket finishedWithFeed:(GDataFeedPhotoAlbum *)feed error:(NSError *)error {

    NSLog(@"In photosEventsTicket");
    NSArray *photos = [feed entries];
    NSLog([NSString stringWithFormat:@"%i",[photos count]]);
}

预先感谢您提供的任何信息或帮助。

Answer 1

如果服务器说“请求的结果太多”，则表明最大结果查询参数太大。

代码片段中的提取似乎不起作用。 kGDataGooglePhotosKindAlbum 和相册的alternateLink 都不是提要的URL。