Question

我正在运行使用Facebook SDK（ 4.9.1 ）的问题，如果没有系统帐户，则会在应用浏览器中打开以进行登录。

从系统登录Facebook帐户效果很好。我使用以下代码

FBSDKLoginManager *manager = [[FBSDKLoginManager alloc] init];
   manager.loginBehavior = FBSDKLoginBehaviorSystemAccount;
   [manager logInWithReadPermissions:@[@"public_profile",@"email",@"user_friends"] fromViewController:controller handler:^(FBSDKLoginManagerLoginResult *result, NSError *error) {
            if (error) {
                success(kFacebookStatusFailed);
            } else if (result.isCancelled) {
                success(kFacebookStatusCancelled);
            } else {
                success(kFacebookStatusSuccess);
            }
}];

我已正确完成所有必需的info.plist设置[{3}}。

问题是当它使用inapp浏览器登录时，实际使用调试找到的 SafariViewController 。它经历了所有登录过程，但最后它陷入了一个白色的空白屏幕并且没有被忽视，请参见下面的截图

here

已尝试过所有可能的步骤，但无法克服它。但是当我设置新项目时，只有上面的登录代码和正确的设置，一切正常。

Fresh Project和Original Project的唯一区别是应用程序中使用的不同框架的数量，例如 Crashlytics ， Fabric ， Instabug ，谷歌框架等。有什么理由我应该怀疑这些框架导致问题，我想不。那么，可能是什么问题，任何遇到同样问题并能帮助我的人都会非常感激。

谢谢。

Answer 1

我遇到了同样的问题。将其添加到AppDelegate：

在AppDelegate.m中

在application:didFinishLaunchingWithOptions:

中

-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    [[FBSDKApplicationDelegate sharedInstance] application:application
                         didFinishLaunchingWithOptions:launchOptions];
}

将以下方法添加到AppDelegate.m：

-(BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
  return [[FBSDKApplicationDelegate sharedInstance] application:application openURL:url sourceApplication:sourceApplication annotation:annotation];
}

我不知道SafariViewController是否会检查application:openURL:sourceApplication:annotation但这对我有用。试试看。我希望它适合你。

来源：https://developers.facebook.com/docs/ios/getting-started

Answer 2

是登录时出现问题。您可以尝试这样

-(IBAction)fbAction:(id)sender

{

    FBSDKLoginManager *manager = [[FBSDKLoginManager alloc] init];
     manager.loginBehavior=FBSDKLoginBehaviorWeb;

    if ([FBSDKAccessToken currentAccessToken])
    {
        [manager logOut];
        NSLog(@"Token is available : %@",[[FBSDKAccessToken currentAccessToken]tokenString]);

        [self fetchUserInfo];
    }
    else
    {
        [manager logInWithReadPermissions:@[@"email"] fromViewController:self handler:^(FBSDKLoginManagerLoginResult *result, NSError *error)
         {
             if (error)
             {
                 NSLog(@"Login process error");
             }
             else if (result.isCancelled)
             {
                 NSLog(@"User cancelled login");
             }
             else
             {
                 NSLog(@"Login Success");
                 if ([result.grantedPermissions containsObject:@"email"])
                 {
                     NSLog(@"result is:%@",result);
                     [self fetchUserInfo];

                 }
             }
         }];
    }

}

-(void)fetchUserInfo

{

        if ([FBSDKAccessToken currentAccessToken])
        {
            NSLog(@"Token is available : %@",[[FBSDKAccessToken currentAccessToken]tokenString]);

            [[[FBSDKGraphRequest alloc] initWithGraphPath:@"me" parameters:@{@"fields": @"id, name, email"}]
             //[[[FBSDKGraphRequest alloc] initWithGraphPath:@"me" parameters:@{@"fields": @"id, name, first_name, last_name, picture.type(large), email"}]

             startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error) {
                 if (!error)
                 {
                     NSLog(@"results:%@",result);

                     NSString *email = [result objectForKey:@"email"];
                     NSString *userId = [result objectForKey:@"id"];

                     if (email.length >0 )
                     {

                         NSLog(@"email %@,userid %@",email,userId);
                     }
                     else
                     {
                         NSLog(@"Facebook email is not verified");
                     }
                 }
                 else
                 {
                     NSLog(@"Error %@",error);
                 }
             }];
        }

}

Answer 3

对我来说，我安装了print("Manhattan distance: ",sum(abs(x-y) for x,y in zip(UserXRatings, UserYRatings))) #It should print - Manhattan distance: 22.5 SDK并且我的Branch app委托方法搞砸了。

openURL:

只打开- (BOOL)application:(UIApplication *)application openURL:(nonnull NSURL *)url options:(nonnull NSDictionary <NSString *, id> *)options个链接，而

Branch

正在打开- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation和Facebook个链接。

仔细检查两种方法（iOS9和＆lt; = iOS8）中的逻辑是否设置正确。

Answer 4

抱歉，我不会“说”目标C，但你必须覆盖OpenUrl。这是C＃：

public override bool OpenUrl(UIApplication application, NSUrl url, string sourceApplication, NSObject annotation)
    {
        // Facebook - We need to handle URLs by passing them to their own OpenUrl in order to make the SSO authentication works.
        return ApplicationDelegate.SharedInstance.OpenUrl(application, url, sourceApplication, annotation);
    }

登录无法使用最新的Facebook SDK

4 个答案: