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Question

我正在这样做tutorial 。

我已经尝试过this solution但不起作用

MyViewController.h

@property (strong, nonatomic) IBOutlet FBProfilePictureView *profilePictureView;

MyViewController.m

@synthesize profilePictureView;

- (void)viewDidLoad
{
    [super viewDidLoad];

    [self loginToFacebook];
}

-(void) loginToFacebook {

    FBLoginView *loginView = [[FBLoginView alloc] initWithReadPermissions:@[@"public_profile", @"email", @"user_friends"]];
    loginView.frame = CGRectOffset(loginView.frame, (self.view.center.x - (loginView.frame.size.width / 2)), 380);
    [self.view addSubview:loginView];
    loginView.delegate = self;
}

#pragma mark - Delegates

- (void)loginViewFetchedUserInfo:(FBLoginView *)loginView user:(id<FBGraphUser>)user {      
    self.profilePictureView.profileID = user.id;
}

AppDelegate.m

- (BOOL)application:(UIApplication *)application
            openURL:(NSURL *)url
  sourceApplication:(NSString *)sourceApplication
         annotation:(id)annotation {

    // Call FBAppCall's handleOpenURL:sourceApplication to handle Facebook app responses
    BOOL wasHandled = [FBAppCall handleOpenURL:url sourceApplication:sourceApplication];

    // You can add your app-specific url handling code here if needed

    return wasHandled;
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    [FBProfilePictureView class];
    return YES;
}

2014-05-15 20:13:41.996 Wobbly[6231:60b] -[UIImageView setProfileID:]: 无法识别的选择器发送到实例 0x16d60a20

2014-05-15 20:13:41.998 Wobbly[6231:60b] *** 由于未捕获的异常“NSInvalidArgumentException”而终止应用程序，原因:“-[UIImageView setProfileID:]:无法识别的选择器发送到实例 0x16d60a20”

更新:5 月 31 日。它仍然不起作用。我不知道答案。

Answer 1

你的问题是这一行:

profilePictureView.profileID = user.objectID;

“profilePictureView”有一个UIImageView对象。它对“profileID”是什么一无所知。

本教程引用“self.profilePictureView.profileID”，这意味着它是 1) 属性和 2) UIImageView 的自定义子类。

因此请确保您已通过这种方式定义了您的属性:

@property (strong, nonatomic) IBOutlet FBProfilePictureView *profilePictureView;

就像教程中那样。