It seems like the ability to post on other people's wall is being removed Feed story publishing to other users is disabled for this application. The SDK itself could potentially allow it
FBRequest *request = [[FBRequest alloc] initWithSession:FBSession.activeSession
graphPath:@"/**CHANGE_WITH_USER_ID**/feed"
parameters:params
HTTPMethod:@"POST"];
But trying I get the following error:
Error Domain=com.facebook.sdk Code=5 "The operation couldn’t be completed. (com.facebook.sdk error 5.)" UserInfo=0x175773d0 {com.facebook.sdk:HTTPStatusCode=403, com.facebook.sdk:ParsedJSONResponseKey={
body = {
error = {
code = 200;
message = "(#200) Feed story publishing to other users is disabled for this application";
type = OAuthException;
};
};
code = 403;
}, ...
As I was saying in the comment, as far as I know private messaging has been removed as well.
The Share Dialog seems to be used only for sharing on your own timeline. The API does not provide options to change the request URL (as in FBRequest). Share Dialog doc