IPhone facebook整合应用响应错误

Question

当我尝试在iphone应用程序的facebook墙上发布时，我在消息对话框中收到以下消息:

Application response error.
The attachment was either missing or its improperly formatted. you can see this because you are one of the developers of the app.

这是我用来在facebook墙上张贴的代码

FBStreamDialog *dialog = [[[FBStreamDialog alloc] init] autorelease];
dialog.userMessagePrompt=@"Enter your message:";
dialog.attachment = [NSString stringWithFormat:@"Testing"];
[[FBRequest requestWithDelegate:self] call:@"facebook.photos.upload" params:[NSDictionary dictionaryWithObjectsAndKeys:@"AppName",@"caption",nil] dataParam:UIImageJPEGRepresentation([UIImage imageNamed:@"AppImage.png"],1.0)];
[dialog show];

Answer 1

我找到了答案对话框。附件是字符串，应该在一个适当的格式有所有必要的字段，如appname，超链接，描述，媒体的图像等和属性。如果它只是一个简单的字符串，这是不够的。

dialog.attachment = [NSString stringWithFormat:@"{"name":"AppName","""href":"Hyperlink","description"‌ ​ :"DescriptionOfApp","""media":[{"type":"image","""src":"HyperlinkOfApp‌ ​ Image","""href":"Hyperlink"}],"""properties":{"PropertiesIfAny":{"text"‌ ​:"Property","href":"Hyperlink"}}}"]; 

Answer 2

我认为下面的代码有问题

[NSDictionary dictionaryWithObjectsAndKeys:@"AppName",@"caption",nil]

你应该像这样输入值和键

[NSDictionary dictionaryWithObjectsAndKeys:value1,key1,value2,key2,...,nil]