tabbarcontroller and facebook api - iphone

Question

I'm trying to implement Facebook API in my app code.
Pratically i have a simple TabbarController with 2 ViewController.
My AppDelegate code:
#interface AppDelegate : NSObject <UIApplicationDelegate, UITabBarControllerDelegate> {
UIWindow *window;
UITabBarController *tabBarController;
Facebook *facebook;
}
#property (retain, nonatomic) IBOutlet UIWindow *window;
#property (retain, nonatomic) IBOutlet UITabBarController *tabBarController;
#property (retain, nonatomic) Facebook *facebook;
method code:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[self.window addSubview:self.tabBarController.view];
[self.window makeKeyAndVisible];
facebook = [[Facebook alloc] initWithAppId:#"12345678910" andDelegate:_tabBarController];
............
return YES;
}
FirstViewController.h
#import "Facebook.h"
#interface FirstViewController : UIViewController <FBRequestDelegate, FBDialogDelegate, FBSessionDelegate> {
}
FirstViewController.m
#import "Appdelegate.h"
-(IBAction)shareFacebook {
AppDelegate *appdelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
if (![appdelegate.facebook isSessionValid]) {
NSArray *permissions = [[NSArray alloc] initWithObjects:
#"publish_stream",
#"read_stream",
nil];
[appdelegate.facebook authorize:permissions];
[permissions release];
}
}
I received a warning for this code: "andDelegate:_tabBarController"
Sending "UITabBarController *" to parameter of incompatible type 'id'

Answer 1

i would say UITabBarController * is not an FBSessionDelegate ... add the protocol as <UIApplicationDelegate, UITabBarControllerDelegate,FBSessionDelegate > and then
facebook = [[Facebook alloc] initWithAppId:#"12345678910" andDelegate:self];

Answer 2

In my app I declare and initialize the facebook object in the AppDelegate just like you. However, I made the AppDelegate use these (just like the other answer said it) : FBRequestDelegate, FBDialogDelegate, FBSessionDelegate. After that I placed all the facebook login/logout/post..etc methods in app delegate class.
After that you can just pass the facebook object to your FirstViewController from the didFinishLaunchingWithOptions.
If you dont understand let me know I'll give you more details. I might not explain it very well.
PS: i might be wrong with this but from what i've seen around the web it is easier to declare methods at the beginning in the app delagete didfinishlaunchingwithoptions and then pass them to specific view controllers.