Implement Login with Facebook in iOS 5 and 6

Question

This question look duplicate and ye it is 50% duplicate because there is no good answer I found any where.

let me divide my question in three part.

Current Situation: I have implemented sign up screen with Email, Date of birth, Gender and Zipcode.
This is working very nice. I have also implement share feature in facebook and twitter in iOS 5 and 6
But now I want to implement it with facebook and twitter like
shown in following example screen:

Login With Facebook

What is problem: I want to know how can I implement login with facebook in iOS 5. twitter is integrated with ios 5 and 6, Facebook with iOS 6 so that is not big deal (right now I think so). I have already implemented share feature for both twitter and facebook for iOS 5 & 6. so what more I need to do to implement login.

What I get in response: As I said I need Email, Date of birth, Gender and Zipcode at time of signup. How can I get this information if I use login with facebook and twitter. What should I do if user have not given or block this information of this social site.

Thanks.......

Satish Azad Satish Azad · Accepted Answer · 2013-01-11T07:40:40

Here is how I implemented this feature in my app:

Download the Facebook SDK for iOS from here

In your AppDelegate.h make a property of the Facebook object.

#import <UIKit/UIKit.h>
#import "Facebook.h"

@interface OutpearAppDelegate : NSObject <UIApplicationDelegate> {
    UIWindow *window;
    IBOutlet UINavigationController *navigationController;        
}

@property (nonatomic, retain) IBOutlet UINavigationController *navigationController;
@property (nonatomic, retain) IBOutlet UIWindow *window;
@property (nonatomic, retain) Facebook *facebook;
+(DemoAppDelegate*)getAppDelegate;

In your AppDelegate.m write this:

synthesize facebook;

and in your applicationDidFinishLaunching method write this:

// Initialize Facebook with app ID
facebook=[[Facebook alloc]initWithAppId:FB_APP_KEY andDelegate:nil];
//here FB_AP_Key is your Facebook application key

and release facebook in dealloc

Where you want to login with Facebook write this function:

- (void)loginWithFacbookIdClicked
{
    [DemoAppDelegate getAppDelegate].facebook.sessionDelegate=self;

    if(isInternetAvailable)
    {
        if([[DemoAppDelegate getAppDelegate].facebook isSessionValid])
        {
            //[facebookIntegration getUserFacebookPersonalInfo];
             NSLog("User already logined with facebook");
        }
        else
        {
            [[DemoAppDelegate getAppDelegate].facebook authorize:[NSArray arrayWithObjects:@"read_stream",
                                 @"publish_stream",
                                 @"email",
                                 @"user_birthday",
                                 @"friends_about_me",
                                 @"friends_activities",
                                 @"friends_likes",
                                 nil]];
        }
    }
    else
    {
       NSLog("No Internet Connection");
    }       
}

After login, the Facebook SDK delegate methods are automatically called. Do your stuff in delegate methods.

- (void)fbDidLogin
{
   NSLog("Logged into Facebook");
   // Your logic goes here.   
}

-(void)fbDidNotLogin:(BOOL)cancelled
{
    DLog(@"Login Cancelled");
}

-(void)fbDidExtendToken:(NSString *)accessToken expiresAt:(NSDate *)expiresAt
{

}

-(void)fbSessionInvalidated
{

}

-(void)fbDidLogout
{

}

Implement Login with Facebook in iOS 5 and 6

2 Answers