IOS - 未调用 Facebook SDK fbDidLogin - 初始化 View Controller 。

Question

我一步一步地按照 Facebook 的 Facebook SDK 教程进行操作。除了调用 fbDidLogin 之外，我的所有工作都正常......授权过程运行良好。我被告知要做:

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

来自 fbDidLogin not called

问题是我不确定如何分配初始化我的 View Controller 。这是我的 .h 应用程序委托(delegate):

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


@interface fb2AppDelegate : UIResponder  <UIApplicationDelegate, FBSessionDelegate> {

    Facebook *facebook; 
    UIViewController *fb2ViewController;
}

@property (strong, nonatomic) UIWindow *window;
@property (strong,nonatomic) Facebook *facebook; 
@property (nonatomic, strong) UIViewController *fb2ViewController;

@end

还有他们 :

#import "fb2AppDelegate.h"

@implementation fb2AppDelegate
@synthesize window = _window;
@synthesize facebook;
@synthesize fb2ViewController;


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{

    self.fb2ViewController = [[UIViewController alloc] init];

    facebook = [[Facebook alloc] initWithAppId:@"key_here" andDelegate:self];


    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    if ([defaults objectForKey:@"FBAccessTokenKey"] 
        && [defaults objectForKey:@"FBExpirationDateKey"]) {
        facebook.accessToken = [defaults objectForKey:@"FBAccessTokenKey"];
        facebook.expirationDate = [defaults objectForKey:@"FBExpirationDateKey"];
    }

    if (![facebook isSessionValid]) {
        [facebook authorize:nil];
    } 


    return YES;
}


- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {
    return [[fb2ViewController facebook] handleOpenURL:url];
}


- (void)fbDidLogin {

    NSLog(@"fbdidlogin"); 

    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    [defaults setObject:[facebook accessToken] forKey:@"FBAccessTokenKey"];
    [defaults setObject:[facebook expirationDate] forKey:@"FBExpirationDateKey"];
    [defaults synchronize];

    NSMutableDictionary* params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                   @"key_here", @"app_id",
                                   @"http://developers.facebook.com/docs/reference/dialogs/", @"link",
                                   @"http://fbrell.com/f8.jpg", @"picture",
                                   @"Facebook Dialogs", @"name",
                                   @"Reference Documentation", @"caption",
                                   @"Using Dialogs to interact with users.", @"description",
                                   nil];

    [facebook dialog:@"feed" andParams:params andDelegate:self];

}

至于 View Controller ......我没有在其中放入任何代码。

我收到的错误是:

“UIViewController”没有可见的@interface 声明选择器“Facebook”

我究竟做错了什么？

谢谢!

Answer 1

好的，您需要执行以下操作:

[facebook handleOpenURL:url]. 

您当前正在使用 facebook作为选择器而不是对象。

另外..你需要设置 facebook.sessionDelegate = self , 以便委托(delegate)方法 fbDidLogin可以被调用。

希望这可以帮助!