Question

i am uploading photo to application(or like) profile page. But it will show error message

“error_code”:240,”error_msg”:”Requires a valid user is specified (either via the session or via the API parameter for specifying the user.”

i am using REST API for facebook.

And this code
NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
img, @”picture”,
kAppId,@”uid”,
nil];

[_facebook requestWithMethodName:@"photos.upload"
                       andParams:params
                   andHttpMethod:@"POST"
                     andDelegate:self];

where kAppId is applicatino ID.
if i remove @”Uid” parameter then photo uploaded to my(user) photo album.

this thing is possible in web that user can upload a photo to like page as news feed.
how we can do it through REST APi

Thanks

Answer 1

You may want to try urlencoding your params using

[params dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];