Question

I wrote this code. I followed the sample application code provided with facebook SDK.
In FeceAppDelegate.m

#import "FaceAppDelegate.h"

#import "FaceViewController.h"

@implementation FaceAppDelegate

@synthesize window = _window;
@synthesize viewController = _viewController;
@synthesize navigationController=_navigationController;

@synthesize facebook;


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    FaceViewController *FaceViewController = [[FaceViewController alloc] init];
    UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:FaceViewController];
       // Initialize Facebook
    facebook = [[Facebook alloc] initWithAppId:@"345678" andDelegate:FaceViewController];


    self.window.rootViewController = self.viewController;
    [self.window makeKeyAndVisible];
    return YES;
}

When I run, I have EXC_BAD_ACCESS , and i have a warning , “Instance method alloc not found …”
I think the problem is in

FaceViewController *FaceViewController = [[FaceViewController alloc] init];

Answer 1

the first comment is the right answer. When you do:

FaceViewController *FaceViewController = [[FaceViewController alloc] init];

You’ve redefined FaceViewController to be an instance variable within the current scope so alloc is being sent to the instance which doesn’t have a an alloc method. Change your instance var name and it will work. The convention is to start with lower case for variable names e.g. faceViewController.