Facebook iOS登录 - 未调用委托方法(Facebook iOS Login - Delegate methods not being called)

 我正在尝试为我的一个应用程序和委托方法实现Facebook登录 - fbDidLogin: / application: handleOpenURL: / fbDidNotLogin:未被调用。 这是我正在使用的代码。 任何帮助深表感谢！ 
 
- (void)viewDidLoad
{
    ... 
    facebook = [[Facebook alloc] initWithAppId:kFacebookAppId];
}

-(IBAction) loginWithFacebook:(id)sender {
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    if ([defaults objectForKey:@"FBAccessTokenKey"] 
        && [defaults objectForKey:@"FBExpirationDateKey"]) {
        facebook.accessToken = [defaults objectForKey:@"FBAccessTokenKey"];
        facebook.expirationDate = [defaults objectForKey:@"FBExpirationDateKey"];
    }
    if (![facebook isSessionValid]) {
        NSArray* permissions =  [[NSArray arrayWithObjects:
                              @"email", nil] retain];
        [facebook authorize:permissions delegate:self];
    }
}

#pragma mark - Facebook delegate

- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {
    return [facebook handleOpenURL:url]; 
}

- (void)fbDidLogin {
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    [defaults setObject:[facebook accessToken] forKey:@"FBAccessTokenKey"];
    [defaults setObject:[facebook expirationDate] forKey:@"FBExpirationDateKey"];
    [defaults synchronize]; 
}

-(void) fbDidNotLogin:(BOOL)cancelled {

}

-(void) fbDidLogout {

}
 
 我还在相应条目下的info.plist文件中有Facebook App ID。 我在loginWithFacebook:方法中有断点，它们成功点击。 [facebook authorize:]方法也会被调用。 
 
 谢谢， 
 Teja公司。 

I'm trying to implement the Facebook login for one of my applications and the delegate methods - fbDidLogin: / application: handleOpenURL: / fbDidNotLogin: aren't being called. Here is the code that I'm using. Any help is much appreciated!
 
- (void)viewDidLoad
{
    ... 
    facebook = [[Facebook alloc] initWithAppId:kFacebookAppId];
}

-(IBAction) loginWithFacebook:(id)sender {
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    if ([defaults objectForKey:@"FBAccessTokenKey"] 
        && [defaults objectForKey:@"FBExpirationDateKey"]) {
        facebook.accessToken = [defaults objectForKey:@"FBAccessTokenKey"];
        facebook.expirationDate = [defaults objectForKey:@"FBExpirationDateKey"];
    }
    if (![facebook isSessionValid]) {
        NSArray* permissions =  [[NSArray arrayWithObjects:
                              @"email", nil] retain];
        [facebook authorize:permissions delegate:self];
    }
}

#pragma mark - Facebook delegate

- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {
    return [facebook handleOpenURL:url]; 
}

- (void)fbDidLogin {
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    [defaults setObject:[facebook accessToken] forKey:@"FBAccessTokenKey"];
    [defaults setObject:[facebook expirationDate] forKey:@"FBExpirationDateKey"];
    [defaults synchronize]; 
}

-(void) fbDidNotLogin:(BOOL)cancelled {

}

-(void) fbDidLogout {

}
 
I also have the Facebook App ID in the info.plist file under the appropriate entry. I have break points in the loginWithFacebook: method and they hit successfully. the [facebook authorize:] method gets called as well.
 
Thanks, 
 Teja.

原文：https://stackoverflow.com/questions/6803303