I am not able to fetch user data from Facebook in iOS

Question

I am new to iPhone programming.Using below code i am login into Facebook and fetching data.But here problem is if click on the Loginwithfacebook button Facebook dialog box o

Answer 1

if you are checking sample code of provide by Facebook in FacebookSDK there is one sample SessionLoginSampleplease check how did work:-

You have to configur you app like this:-

in Native iOS app you have to set you app Bundle Id that you are using in to you Project for example(com.compame.projecname)

For implement in to your Project Here i put the explain.

in .h file create One Button with IBOutlet and connect this button in to xib as we did normally

#import 


@interface LoginViewController : UIViewController
{
    IBOutlet UIButton *FB_login; // just connect IBoutlate no need to give IBAction
    FBLoginView *loginview;

}
@property (strong, nonatomic) id loggedInUser;
@property (strong, nonatomic) IBOutlet FBProfilePictureView *profilePic; //this is for show profile pic or logged in user

in .m File @implementation LoginViewController @synthesize profilePic = _profilePic;

- (void)viewDidLoad
{
    loginview = [[FBLoginView alloc] init];
    loginview =
    [[FBLoginView alloc] initWithPublishPermissions:[NSArray arrayWithObjects:@"publish_actions",@"email",nil] defaultAudience:FBSessionDefaultAudienceFriends];

    loginview.frame =FB_login.frame;//CGRectMake(90,149, 280, 55);
    for (id obj in loginview.subviews)
    {
        if ([obj isKindOfClass:[UIButton class]])
        {
            UIButton * loginButton =  obj;

            UIImage *loginImage = [UIImage imageNamed:@"btn_fb_login.png"];
            [loginButton setBackgroundImage:loginImage forState:UIControlStateNormal];
            [loginButton setBackgroundImage:nil forState:UIControlStateSelected];
            [loginButton setBackgroundImage:nil forState:UIControlStateHighlighted];
            [loginButton sizeToFit];
        }
        if ([obj isKindOfClass:[UILabel class]])
        {
            UILabel * loginLabel =  obj;
            loginLabel.text =@""; //@"Log in to facebook";
            loginLabel.textAlignment = NSTextAlignmentCenter;
            loginLabel.frame =CGRectMake(123,149, 280, 55);// CGRectMake(0, 0, 271, 37);
        }
    }

    loginview.delegate = self;

    [self.view addSubview:loginview];

    [super viewDidLoad];

}

-(void)LogOut:(NSNotification *)notif
{
    [self loginViewShowingLoggedOutUser:loginview];
    NSHTTPCookieStorage *cookieStorage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
    for (NSHTTPCookie *each in cookieStorage.cookies) {
        // put a check here to clear cookie url which starts with twitter and then delete it
        [cookieStorage deleteCookie:each];
    }
}

#pragma  mark------ FaceBook Sign In method------------

- (void)loginViewShowingLoggedInUser:(FBLoginView *)loginView {

    NSLog(@"Logged In");


}

- (void)loginViewFetchedUserInfo:(FBLoginView *)loginView
                            user:(id)user {

    NSLog(@"%@",user);
    self.profilePic.profileID = user.id;





}
- (void)loginViewShowingLoggedOutUser:(FBLoginView *)loginView {
    // Called after logout
    NSLog(@"Logged out");

    self.profilePic.profileID = nil;
    [FBSession.activeSession closeAndClearTokenInformation];


}
- (void)loginView:(FBLoginView *)loginView handleError:(NSError *)error {
    // see https://developers.facebook.com/docs/reference/api/errors/ for general guidance on error handling for Facebook API
    // our policy here is to let the login view handle errors, but to log the results
    NSLog(@"FBLoginView encountered an error=%@", error);
}

NOTE:- If you are trying to set Image of logged in user using FBProfilePictureView do not forget add [FBProfilePictureView class]; in to app Delegate like Bellow

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    [FBProfilePictureView class];
    // Override point for customization after application launch.
    return YES;
}

Here it is a sample code for you Sample code Facebook log-in with Image