ios - Facebook iOS SDK 从 App 分享图片

Question

我尝试将图片分享到 Facebook。这是工作。

 NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                   kAppId, @"app_id",
                                   url, @"link",
                                  @"http://yandex.st/morda-logo/i/logo.png", @"picture",
                                   title, @"name",
                                   produc, @"caption",
                                   tempString, @"description",
                                   message, @"message",
                                   nil];

但我想从我的应用程序分享图片。我试试

NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                   kAppId, @"app_id",
                                   url, @"link",
                                  [UIImage imageNamed:@"nav.png"], @"picture",
                                   title, @"name",
                                   produc, @"caption",
                                   tempString, @"description",
                                   message, @"message",
                                   nil];

但是我有问题:

:frame:decisionListener: delegate: -[UIImage length]: unrecognized selector sent to instance 0xc98b1d0

我做错了什么？非常感谢

Answer 1

尝试使用“来源”而不是“图片”。图片需要 url 字符串。

NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                   kAppId, @"app_id",
                                   url, @"link",
                                  [UIImage imageNamed:@"nav.png"], @"source",
                                   title, @"name",
                                   produc, @"caption",
                                   tempString, @"description",
                                   message, @"message",
                                   nil];