Get Facebook Friends list and display it in custom view? - ios

I'm trying to get FaceBook Friend list , and display it in custom view like "foresqure App"
what I mean "foursquare" ask for the permission and to post on your wall inside the app without leaving the app to the browser or to the app Facebook ? after that the app get all friends and display it in custom tableView.
here what I tried :
if (!FBSession.activeSession.isOpen) {
// if the session is closed, then we open it here, and establish a handler for state changes
[FBSession openActiveSessionWithReadPermissions:#[#"public_profile", #"user_friends"]
allowLoginUI:YES
completionHandler:^(FBSession *session,
FBSessionState state,
NSError *error) {
if (error) {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Error"
message:error.localizedDescription
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alertView show];
} else if (session.isOpen) {
//[self pickFriendsButtonClick:sender];
NSLog(#"aaaa");
FBRequest* friendsRequest = [FBRequest requestForMyFriends];
[friendsRequest startWithCompletionHandler: ^(FBRequestConnection *connection,
NSDictionary* result,
NSError *error) {
NSArray* friends = [result objectForKey:#"data"];
NSLog(#"Found: %i friends", friends.count);
for (NSDictionary<FBGraphUser>* friend in friends) {
NSLog(#"I have a friend named %# with id %#", friend.name, friend.id);
}
}];
}
}];
}
In this case it will open the safari to ask for permision not inside the app and friend array allows nill or count = 0.

Try this code ..
Firstly call this method like this ..
[self FBFriendList];
And add this two methods.
-(void)FBFriendList
{
if (!FBSession.activeSession.isOpen)
{
// if the session is closed, then we open it here, and establish a handler for state changes
[FBSession openActiveSessionWithReadPermissions:nil allowLoginUI:YES completionHandler:^(FBSession *session,FBSessionState state, NSError *error)
{
if (error)
{
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Error" message:error.localizedDescription delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil];
[alertView show];
[alertView release];
}
else if(session.isOpen)
{
[self FBFriendList];
[self fb_frnd_use_this_app];
}
}];
return;
}
}
-(void)fb_frnd_use_this_app
{
FBRequest *request = [FBRequest requestWithGraphPath:#"me/friends"
parameters:#{#"fields":#"name,installed,first_name,picture"}
HTTPMethod:#"GET"];
[request startWithCompletionHandler:^(FBRequestConnection *connection,
id result,
NSError *error)
{
NSLog(#"%#",result);
int count = 0;
NSMutableArray *frnd_arr = [result objectForKey:#"data"];
for (int i = 0; i < [frnd_arr count]; i++)
{
NSLog(#"%#",frnd_arr);
count++;
}
NSLog(#"%#",app.Arr_Facebook_Frnd);
app.fbfriendCount =[NSString stringWithFormat:#"%d",count];
}];
}
Hope this code is useful for you.

Related

Block UITableView not scrolling , when get Facebook Friend List - ios

I have implement a script to get list friends in my facebook include image, username....
But when it load to viewcontroller ( uitableview ) list friends has return but the tableview be block scrolling, please help
'- (void)getFriendsListWithCompleteBlock:(void (^)(NSArray *, NSString *))completed{
if (!FBSession.activeSession.isOpen)
{
NSLog(#"permissions::%#",FBSession.activeSession.permissions);
// if the session is closed, then we open it here, and establish a handler for state changes
[FBSession openActiveSessionWithReadPermissions:#[#"basic_info", #"user_friends"]
allowLoginUI:YES
completionHandler:^(FBSession *session,
FBSessionState state,
NSError *error) {
if (error)
{
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Error"
message:error.localizedDescription
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alertView show];
}
else if (session.isOpen)
{
[self showWithStatus:#""];
FBRequest *friendRequest = [FBRequest requestForGraphPath:#"me/friends?fields=name,picture,gender"];
[friendRequest startWithCompletionHandler:^(FBRequestConnection *connection, id result, NSError *error) {
NSArray *data = [result objectForKey:#"data"];
NSMutableArray *friendsList = [[NSMutableArray alloc] init];
for (FBGraphObject<FBGraphUser> *friend in data)
{
//NSLog(#"friend:%#", friend);
NSDictionary *picture = [friend objectForKey:#"picture"];
NSDictionary *pictureData = [picture objectForKey:#"data"];
//NSLog(#"picture:%#", picture);
FBData *fb = [[FBData alloc]
initWithData:(NSString*)[friend objectForKey:#"name"]
userID:(NSInteger)[[friend objectForKey:#"id"] integerValue]
gender:(NSString*)[friend objectForKey:#"gender"]
photoURL:(NSString*)[pictureData objectForKey:#"url"]
photo:(UIImage*)nil
isPhotoDownloaded:(BOOL)NO];
[friendsList addObject:fb];
}
NSString *message;
if (friendsList.count <1) {
message = #"Not Founds";
}
[self dismissStatus];
dispatch_async(dispatch_get_main_queue(), ^{
if (completed) {
completed(friendsList,message);
}
});
}];
}
}];
}
}
'

Can't get Facebook friends with FBFriendPicker in iOS

I want to get Facebook friends in my project. I have tried the FBFriendPicker Method, but I can't get the friends. It shows empty list to me.
Here is my code.
- (IBAction)pickFriendsButtonClick:(id)sender {
if (!FBSession.activeSession.isOpen) {
[FBSession openActiveSessionWithReadPermissions:#[#"public_profile", #"user_friends"]
allowLoginUI:YES
completionHandler:^(FBSession *session,
FBSessionState state,
NSError *error) {
if (error) {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Error"
message:error.localizedDescription
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alertView show];
} else if (session.isOpen) {
[self pickFriendsButtonClick:sender];
}
}];
return;
}
if (self.friendPickerController == nil) {
// Create friend picker, and get data loaded into it.
self.friendPickerController = [[FBFriendPickerViewController alloc] init];
self.friendPickerController.title = #"Pick Friends";
self.friendPickerController.delegate = self;
}
[self.friendPickerController loadData];
[self.friendPickerController clearSelection];
[self presentModalViewController:self.friendPickerController animated:YES];
}
Try This...
-(IBAction)btnFacebookClick:(id)sender
{
NSArray *permissions = [[NSArray alloc] initWithObjects: #"user_about_me,user_birthday,user_hometown,user_location,email",#"read_mailbox",#"read_stream",nil];
[FBSession openActiveSessionWithReadPermissions:permissions allowLoginUI:YES completionHandler:^(FBSession *session,FBSessionState status,NSError *error)
{
if(error)
{
NSLog(#"session error %#",error);
}
else if(FB_ISSESSIONOPENWITHSTATE(status))
{
[self getFriendList];
}
}];
}
-(void)getFriendList
{
FBRequest *friendsRequest=[FBRequest requestForMyFriends];
[friendsRequest startWithCompletionHandler:^(FBRequestConnection *connection,NSDictionary* result,NSError *error)
{
friendsArr = [result objectForKey:#"data"];
NSLog(#"friends description :%#",[friendsArr description]);
}];
}
Try this code for get facebook friends....
FBRequest* friendsRequest = [FBRequest requestForMyFriends];
friendsRequest.session = FBSession.activeSession;
[friendsRequest startWithCompletionHandler: ^(FBRequestConnection *connection,
NSDictionary* result,
NSError *error) {
NSArray* friends = [result objectForKey:#"data"];
NSLog(#"Found: %lu friends", (unsigned long)friends.count);
for (NSDictionary<FBGraphUser>* friend in friends)
{
NSLog(#"I have a friend named %# ", friend.name);
}
}];
Please try below code :
[FBSession openActiveSessionWithReadPermissions:#[#"email"]
allowLoginUI:YES
completionHandler:^(FBSession *session, FBSessionState state, NSError *error) {
if (error) {
// Handle errors
[self handleAuthError:error];
}
else
{
// Check for publish permissions
FBRequest *req = [FBRequest requestForMyFriends];
[req startWithCompletionHandler:^(FBRequestConnection *connection,NSDictionary *result,NSError *error){
NSLog(#"Result:- %#",[result objectForKey:#"data"]);
}];
}
}];
With the new API version v2.0, you cannot get the complete list of friends just with user_friends. Your picker must be using /me/friends which will give you the list of friends using that app. So in your case none of your friends be using this app and that's why you are getting a blank response.
To get the complete list of friends you should use /me/taggable_friends API. But note that this permission needs to be reviewed first by facebook before you go live. See this answer for more info for using this permission.

FBSession: an attempt was made reauthorize permissions on an unopened session in ios

Hi I am using facebook SDK 3.8 in my project. and using HelloFaceBookSample Code in my app but in my app i have no login button of facebook. I have implemented login flow of facebook and after login i have post on facebook. Now Post Status working fine but when i post image on facebook it give me error of
an attempt was made reauthorize permissions on an unopened session in ios
Code :
-(void) clickButtonFacebookUsingSDK
{
if (!appdelegate.session.isOpen)
{
appdelegate.session = [[FBSession alloc] init];
[appdelegate.session openWithCompletionHandler:^(FBSession *session,
FBSessionState status,
NSError *error) {
if(appdelegate.session.isOpen)
{
NSLog(#"calling postdata when session is not open******");
[self postData];
}
}];
}
else
{
NSLog(#"calling postdata when session is open******");
[self postData];
}
}
-(void) postData
{
[self showingActivityIndicator];
UIImage *img = [UIImage imageNamed:#"abc.jpg"];
[self performPublishAction:^{
FBRequestConnection *connection = [[FBRequestConnection alloc] init];
connection.errorBehavior = FBRequestConnectionErrorBehaviorReconnectSession
| FBRequestConnectionErrorBehaviorAlertUser
| FBRequestConnectionErrorBehaviorRetry;
FBRequest *req = [FBRequest requestForUploadPhoto:img];
[req.parameters addEntriesFromDictionary:[NSMutableDictionary dictionaryWithObjectsAndKeys:message3, #"message", nil]];
[connection addRequest:req
completionHandler:^(FBRequestConnection *connection, id result, NSError *error) {
// [self showAlert:#"Photo Post" result:result error:error];
[self showAlert:#"Photo Post" result:result resulterror:error];
if (FBSession.activeSession.isOpen) {
}
}];
[connection start];
}];
}
- (void) performPublishAction:(void (^)(void)) action {
// we defer request for permission to post to the moment of post, then we check for the permission
if ([FBSession.activeSession.permissions indexOfObject:#"publish_actions"] == NSNotFound)
{
// if we don't already have the permission, then we request it now
[FBSession.activeSession requestNewPublishPermissions:#[#"publish_actions"]
defaultAudience:FBSessionDefaultAudienceFriends
completionHandler:^(FBSession *session, NSError *error)
{
if (!error) {
action();
} else if (error.fberrorCategory != FBErrorCategoryUserCancelled){
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Permission denied"
message:#"Unable to get permission to post"
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alertView show];
}
}];
} else {
action();
}
}
// UIAlertView helper for post buttons
- (void)showAlert:(NSString *)message result:(id)result resulterror:(NSError *)error
{
NSString *alertMsg;
NSString *alertTitle;
if (error)
{
alertTitle = #"Error";
// Since we use FBRequestConnectionErrorBehaviorAlertUser,
// we do not need to surface our own alert view if there is an
// an fberrorUserMessage unless the session is closed.
if (FBSession.activeSession.isOpen) {
alertTitle = #"Error";
} else {
// Otherwise, use a general "connection problem" message.
alertMsg = #"Operation failed due to a connection problem, retry later.";
}
}
else
{
NSDictionary *resultDict = (NSDictionary *)result;
alertMsg = [NSString stringWithFormat:#"Successfully posted '%#'.", message];
NSString *postId = [resultDict valueForKey:#"id"];
if (!postId) {
postId = [resultDict valueForKey:#"postId"];
}
if (postId) {
alertMsg = [NSString stringWithFormat:#"%#\nPost ID: %#", alertMsg, postId];
}
alertTitle = #"Success";
}
if (alertTitle) {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:alertTitle
message:alertMsg
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alertView show];
[self dismissActivityIndicator];
}
}
it gives me error in performPublishAction method.
can anyone tell me what is the problem . i have a lot of search and also found many solution but no one work. Please help. Thanks in advance.
I think that you have to set to FBSession what is its active session :
FBSession *session = [[FBSession alloc] init];
[FBSession setActiveSession:session];

adding a Post To Facebook Timeline from iOS APP

HI Im trying to enable a IBAction to post on an user's timeline while they have an active section. I am getting an error message stating; Implicit declaration of function "x" is invalid C99. I been reading posts about the issue but no luck and honestly I am not sure if I am doing this right at all. I updated the permissions on my fb app and got the object code from the Graph API Explorer but I dont know if Im implementing it right on my code.
Here is my post method:
-(void) aPost
{
NSMutableDictionary<FBGraphObject> *object =
[FBGraphObject openGraphObjectForPostWithType:#"website"
title:#"CR Taxi APP"
image:#"http://a4.mzstatic.com/us/r1000/047/Purple4/v4/05/cc/f2/05ccf23f-a409-1e73-a649-a5e6afc4e6eb/mzl.llffzfbp.175x175-75.jpg"
url:#"https://itunes.apple.com/cr/app/cr-taxi/id674226640?mt=8"
description:#"La nueva aplicación para llamar taxis!"];;
[FBRequestConnection startForPostWithGraphPath:#"{id_from_create_call}"
graphObject:object
completionHandler:^(FBRequestConnection *connection,
id result,
NSError *error) {
// handle the result
}];
}
and this is my action method
- (IBAction)publishAction:(id)sender {
if ([FBSession.activeSession.permissions
indexOfObject:#"publish_actions"] == NSNotFound) {
NSArray *writepermissions = [[NSArray alloc] initWithObjects:
#"publish_stream",
#"publish_actions",
nil];
[[FBSession activeSession]requestNewPublishPermissions:writepermissions defaultAudience:FBSessionDefaultAudienceFriends completionHandler:^(FBSession *aSession, NSError *error){
if (error) {
NSLog(#"Error on public permissions: %#", error);
}
else {
**not on the code //( error on this one) aPost(aSession, error);
}
}];
}
else {
// If permissions present, publish the story
**not on the code //(not an error on this one) aPost(FBSession.activeSession, nil);
}
}
Please help!
Thank you!
I'd guess the compiler error is actually "Implicit declaration of function 'aPost' is invalid C99", although the formatting of your action method code is wonky as written. The compiler is only going to produce that error message the first time it encounters the function call to aPost.
aPost is written as a method that has no return and takes no arguments. You are trying to call it as a C function, passing it two arguments, which the compiler interprets as an entirely new function. As aPost is written with all the hard-coded strings, you probably just want to change the calls to aPost(arg1, arg2); to [self aPost]; (provided aPost and publishAction are in the same class).
Try this: might helps you
//Write This Line in your ViewController.h File
#property (strong, nonatomic) NSMutableDictionary *postParams;
//in View Controller.m File
- (void)viewDidLoad
{
self.postParams =
[[NSMutableDictionary alloc] initWithObjectsAndKeys:
[UIImage imageNamed:#"Default.png"], #"picture",
#"Facebook SDK for iOS", #"name",
#"build apps.", #"caption",
#"testing for my app.", #"description",
nil];
[self.postParams setObject:#"hgshsghhgsls" forKey:#"message"];
}
- (IBAction)SharePressed:(id)sender {
#try {
[self openSession];
NSArray *permissions =[NSArray arrayWithObjects:#"publish_actions",#"publish_stream",#"manage_friendlists",#"read_stream", nil];
[[FBSession activeSession] reauthorizeWithPublishPermissions:permissions defaultAudience:FBSessionDefaultAudienceFriends
completionHandler:^(FBSession *session, NSError *error) {
/* handle success + failure in block */
if (![session isOpen]) {
[self openSession];
}
}];
[FBRequestConnection startWithGraphPath:#"me/feed" parameters:self.postParams HTTPMethod:#"POST"
completionHandler:^(FBRequestConnection *connection,id result,NSError *error) {
NSString *alertText;
if (error) {
alertText = [NSString stringWithFormat:#"error: domain = %#, code = %d, des = %#",error.domain, error.code,error.description];
}
else
{
alertText=#"Uploaded Successfully";
[self ResetAllcontent];
}
// Show the result in an alert
[[[UIAlertView alloc] initWithTitle:#"Result" message:alertText delegate:self cancelButtonTitle:#"OK!"
otherButtonTitles:nil]show];
}];
}
#catch (NSException *exception) {
UIAlertView *alert=[[UIAlertView alloc] initWithTitle:#"Please Login" message:#"For Sharing on facbook please login with facbook" delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:nil, nil];
[alert show];
}
#finally {
}
}
- (void)openSession
{
AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication]delegate];
[FBSession openActiveSessionWithReadPermissions:nil
allowLoginUI:YES
completionHandler:
^(FBSession *session,
FBSessionState state, NSError *error) {
[appDelegate sessionStateChanged:session state:state error:error];
}];
ACAccountStore *accountStore;
ACAccountType *accountTypeFB;
if ((accountStore = [[ACAccountStore alloc] init]) &&
(accountTypeFB = [accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierFacebook] ) ){
NSArray *fbAccounts = [accountStore accountsWithAccountType:accountTypeFB];
id account;
if (fbAccounts && [fbAccounts count] > 0 &&
(account = [fbAccounts objectAtIndex:0])){
[accountStore renewCredentialsForAccount:account completion:^(ACAccountCredentialRenewResult renewResult, NSError *error) {
//we don't actually need to inspect renewResult or error.
if (error){
}
}];
}
}
}
}
//=====in your plist file do
URLTypes=>Item 0=> URL Schemes =>Item 0=>fbyourfacebookId
FacebookAppID-your facebookID
And yes dont forget to create facebook id at developer.facebook.com
and also give permissions as your need
- (IBAction)shareViaFacebook:(id)sender {
if (FBSession.activeSession.isOpen) {
NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
[NSString stringWithFormat:#"%#. Join on Linute.",self.userNameLabel.text], #"name",
//#"Build great social apps and get more installs.", #"caption",
locationString, #"description",
//#"http://www.linute.com/", #"link",
eventPicString, #"picture",//imageURL
nil];
// Make the request
[FBRequestConnection startWithGraphPath:#"/me/feed"
parameters:params
HTTPMethod:#"POST"
completionHandler:^(FBRequestConnection *connection, id result, NSError *error) {
if (!error) {
// Link posted successfully to Facebook
NSLog(#"result: %#", result);
} else {
// An error occurred, we need to handle the error
// See: https://developers.facebook.com/docs/ios/errors
NSLog(#"%#", error.description);
}
}];
}else{
FBSession *session = [[FBSession alloc] initWithPermissions:#[#"public_profile", #"email",#"user_friends",#"publish_actions"]];
[FBSession setActiveSession:session];
[session openWithBehavior:FBSessionLoginBehaviorWithFallbackToWebView completionHandler:^(FBSession *session, FBSessionState status, NSError *error) {
if (FBSession.activeSession.isOpen) {
[self shareViaFacebook:nil];
}else{
[self shareViaFacebook:nil];
}
}];
}

Facebook iOS SDK 3.1 | "You have already authorized YOUR_APP" appears every time user tries to login

I'm currently trying to implement the Facebook-Login-Flow with iOS Facebook SDK 3.1.
But there is a little Problem with it. Every time the user logs in with facebook the webview will open up and says
"You have already authorized YOUR_APP.."
The code I wrote based on the following example: click here
Now my question is, how can I avoid this behaviour and what I am doing wrong?
Please see this code ,it may help
postParams=
[#{
#"link" :link,
#"picture" :picture link , //[NSString stringWithFormat:#"%#%#",KBaseImageUrl,#"/assets/img/logo-small.jpg"],
#"name" : #“name”,
#"caption" : caption title,
#"description" :discription
} mutableCopy];
title=[[arrayEventInfo valueForKey:#"info"] valueForKey:#"eventname"];
if ([[FBSession activeSession]isOpen])
{
if ([[[FBSession activeSession]permissions]indexOfObject:#"publish_actions"] == NSNotFound)
{
[[FBSession activeSession] requestNewPublishPermissions:[NSArray arrayWithObject:#"publish_action"] defaultAudience:FBSessionDefaultAudienceFriends
completionHandler:^(FBSession *session,NSError *error){
// If permissions granted, publish the story
[FBRequestConnection
startWithGraphPath:#"me/feed"
parameters:postParams
HTTPMethod:#"POST"
completionHandler:^(FBRequestConnection *connection,
id result,
NSError *error)
{
NSString *alertText;
if (error)
{
alertText = [NSString stringWithFormat:
#"error: domain = %#, code = %d",
error.domain, error.code];
}
else
{
alertText = #"Posted successfully on your wall.";//[NSString stringWithFormat:
//#"Posted action, id: %#",
// result[#"id"]];
}
//Show the result in an alert
[[[UIAlertView alloc] initWithTitle:title
message:alertText
delegate:self
cancelButtonTitle:#"OK" otherButtonTitles:nil]show];
[FBSession.activeSession closeAndClearTokenInformation];
[FBSession.activeSession close];
}];
UIActivityIndicatorView *activityView=(UIActivityIndicatorView*)[self.view viewWithTag:111];
if(activityView)
{
[activityView removeFromSuperview];
}
[self.view setUserInteractionEnabled:YES];
[self.navigationController.navigationBar setUserInteractionEnabled:YES];
}];
}else
{
// If permissions granted, publish the story
[FBRequestConnection
startWithGraphPath:#"me/feed"
parameters:postParams
HTTPMethod:#"POST"
completionHandler:^(FBRequestConnection *connection,
id result,
NSError *error)
{
NSString *alertText;
if (error)
{
alertText = [NSString stringWithFormat:
#"error: domain = %#, code = %d",
error.domain, error.code];
}
else
{
alertText = #"Posted successfully on your wall.";//[NSString stringWithFormat:
//#"Posted action, id: %#",
// result[#"id"]];
}
//Show the result in an alert
[[[UIAlertView alloc] initWithTitle:title
message:alertText
delegate:self
cancelButtonTitle:#"OK" otherButtonTitles:nil]show];
[FBSession.activeSession closeAndClearTokenInformation];
[FBSession.activeSession close];
}];
}
}
else
{
[FBSession openActiveSessionWithPublishPermissions:[NSArray arrayWithObject:#"publish_actions"]
defaultAudience:FBSessionDefaultAudienceOnlyMe
allowLoginUI:YES
completionHandler:^(FBSession *session, FBSessionState status, NSError *error) {
if (!error && status == FBSessionStateOpen) {
if (!error)
{
// If permissions granted, publish the story
[FBRequestConnection
startWithGraphPath:#"me/feed"
parameters:postParams
HTTPMethod:#"POST"
completionHandler:^(FBRequestConnection *connection,
id result,
NSError *error)
{
NSString *alertText;
if (error)
{
alertText = [NSString stringWithFormat:
#"error: domain = %#, code = %d",
error.domain, error.code];
}
else
{
alertText = #"Posted successfully on your wall.";//[NSString stringWithFormat:
//#"Posted action, id: %#",
// result[#"id"]];
}
//Show the result in an alert
[[[UIAlertView alloc] initWithTitle:title
message:alertText
delegate:self
cancelButtonTitle:#"OK" otherButtonTitles:nil]show];
[FBSession.activeSession closeAndClearTokenInformation];
[FBSession.activeSession close];
}];
}
}else{
NSLog(#"%#",[error description]);
UIActivityIndicatorView *activityView=(UIActivityIndicatorView*)[self.view viewWithTag:111];
if(activityView)
{
[activityView removeFromSuperview];
}
[self.view setUserInteractionEnabled:YES];
[self.navigationController.navigationBar setUserInteractionEnabled:YES];
}
}];
}
If you are testing the code in dev then the first time you log in it will store that session on Facebook.
So, you try to test it again but it is already authorized.
If you want to test the login process again then go to Facebook and de-authorize your app (it will be in your list of apps).
Then you can log in again on the device.

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