Get publish permission for Facebook app for iOS with -openWithBehavior:completionHandler: - iphone

Question

In my application I need user to sign in to Facebook, get friend list in my table view and Post on feeds, but I don't want to redirect the user anywhere. so I used -openWithBehavior:completionHandler: ... Here is my code.
-(IBAction)loginAction:(id)sender {
[self deleteCookies];
// get the app delegate so that we can access the session property
DLAppDelegate *appDelegate = [[UIApplication sharedApplication]delegate];
// this button's job is to flip-flop the session from open to closed
if (appDelegate.session.isOpen) {
// if a user logs out explicitly, we delete any cached token information, and next
// time they run the applicaiton they will be presented with log in UX again; most
// users will simply close the app or switch away, without logging out; this will
// cause the implicit cached-token login to occur on next launch of the application
[appDelegate.session closeAndClearTokenInformation];
} else {
if (appDelegate.session.state != FBSessionStateCreated) {
// Create a new, logged out session.
appDelegate.session = [[FBSession alloc] init];
[self updateView];
}
// if the session isn't open, let's open it now and present the login UX to the user
[appDelegate.session openWithBehavior:FBSessionLoginBehaviorForcingWebView completionHandler:^(FBSession *session, FBSessionState status, NSError *error) {
switch (status) {
case FBSessionStateOpen:
// call the legacy session delegate
//Now the session is open do corresponding UI changes
{
FBCacheDescriptor *cacheDescriptor = [FBFriendPickerViewController cacheDescriptor];
[cacheDescriptor prefetchAndCacheForSession:session];
[FBSession openActiveSessionWithAllowLoginUI:NO];
[FBSession openActiveSessionWithPublishPermissions:[NSArray arrayWithObjects:#"publish_stream",#"publish_actions", nil] defaultAudience:FBSessionDefaultAudienceFriends allowLoginUI:NO completionHandler:nil];
}
break;
case FBSessionStateClosedLoginFailed:
{ // prefer to keep decls near to their use
// unpack the error code and reason in order to compute cancel bool
// call the legacy session delegate if needed
//[[delegate facebook] fbDialogNotLogin:userDidCancel];
}
break;
// presently extension, log-out and invalidation are being implemented in the Facebook class
default:
break; // so we do nothing in response to those state transitions
}
[self updateView];
}];
}
}
The user is successfully signed in and I can retrieve the friend list by using FQL. The problem is while posting to feeds. I know I need to get publish permissions to do it. But when I uses the following code to post...
- (IBAction)postAction:(id)sender {
DLAppDelegate *appDelegate = [[UIApplication sharedApplication]delegate];
if (appDelegate.session.isOpen) {
[FBSession openActiveSessionWithAllowLoginUI:NO];
NSMutableDictionary *postParams = [[NSMutableDictionary alloc] initWithObjectsAndKeys:
#"https://developers.facebook.com/ios", #"link",
#"https://developers.facebook.com/attachment/iossdk_logo.png", #"picture",
#"Facebook SDK for iOS", #"name",
#"Build great social apps and get more installs.", #"caption",
#"The Facebook SDK for iOS makes it easier and faster to develop Facebook integrated iOS apps.", #"description",
nil];
if ([_postText.text length]>0) {
[postParams setObject:[_postText text] forKey:#"message"];
}
if (([FBSession.activeSession.permissions
indexOfObject:#"publish_actions"] == NSNotFound) ||
([FBSession.activeSession.permissions
indexOfObject:#"publish_stream"] == NSNotFound)) {
// No permissions found in session, ask for it
[FBSession.activeSession
reauthorizeWithPublishPermissions:
[NSArray arrayWithObjects:#"publish_stream",#"publish_actions",nil]
defaultAudience:FBSessionDefaultAudienceFriends
completionHandler:^(FBSession *session, NSError *error) {
if (!error) {
// If permissions granted, publish the story
[self publishStory:postParams];
}
}];
} else {
// If permissions present, publish the story
[self publishStory:postParams];
}
}
}
-(void)publishStory:(NSDictionary *)postParams {
[FBRequestConnection startWithGraphPath:
#"me/feed" parameters:postParams HTTPMethod:#"POST"
completionHandler:^(FBRequestConnection *connection, id result, NSError *error)
{
if (!error) {
//Tell the user that it worked.
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Shared:"
message:[NSString stringWithFormat:#"Sucessfully posted to your wall."]
delegate:self
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
alertView.tag = 101;
[alertView show];
}
else {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Error:"
message:error.localizedDescription
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alertView show];
NSLog(#"%#",error);
}
}
];
}
This code redirects the user to Safari or Facebook App. Which I don't want to happen.
Definitely I need to get publish permissions while logging in. the question is HOW?

Answer 1

You have to set FBSessionLoginBehavior, to change it the only way is to use:
[session openWithBehavior:FBSessionLoginBehaviorWithNoFallbackToWebView
completionHandler:^(FBSession *session,
FBSessionState status,
NSError *error) {
// Respond to session state changes,
// ex: updating the view
}];
I see you use FBSessionLoginBehaviorForcingWebView, so to get what you want you have to choose from this enum:
typedef enum {
/*! Attempt Facebook Login, ask user for credentials if necessary */
FBSessionLoginBehaviorWithFallbackToWebView = 0,
/*! Attempt Facebook Login, no direct request for credentials will be made */
FBSessionLoginBehaviorWithNoFallbackToWebView = 1,
/*! Only attempt WebView Login; ask user for credentials */
FBSessionLoginBehaviorForcingWebView = 2,
/*! Attempt Facebook Login, prefering system account and falling back to fast app switch if necessary */
FBSessionLoginBehaviorUseSystemAccountIfPresent = 3,
} FBSessionLoginBehavior;
Now to solve this "Definitely I need to get publish permissions while logging in. the question is HOW?" you may - (id)initWithPermissions:(NSArray*)permissions; your Session :
NSArray *permissions = #[#"publish_stream", #"publish_actions"];
appDelegate.session = [[FBSession alloc] initWithPermissions:permissions];