iOS Facebook：使用故事板获取用户数据

Posted 2023-03-16

【中文标题】iOS Facebook：使用故事板获取用户数据

【英文标题】：iOS Facebook: Fetching user data using storyboard

【发布时间】：2013-11-08 13:49:55

【问题描述】：

我是第一次尝试 facebook 集成。我对可以从不同教程站点获得的许多代码感到困惑。 我已使用以下代码从 facebook 数据中获取用户信息，但我无法使用情节提要获取数据。有人可以建议这段代码有什么问题吗？

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

BOOL wasHandled = [FBAppCall handleOpenURL:url sourceApplication:sourceApplication];


return wasHandled;

此处的以下代码段没有被执行。那么还有其他方法可以将控件放入此代码中吗？

 - (void)loginViewFetchedUserInfo:(FBLoginView *)loginView
                         user:(id<FBGraphUser>)user 
 regisrationdetails.fbid = user.id;
 regisrationdetails.firstname = user.first_name;
 

休息一下，我尝试了不同的类型来调用它，但它没有发生。

- (void)loginView:(FBLoginView *)loginView
  handleError:(NSError *)error 
NSString *alertMessage, *alertTitle;
if (error.fberrorShouldNotifyUser) 

    alertTitle = @"Facebook Error";
    alertMessage = error.fberrorUserMessage;
 else if (error.fberrorCategory == FBErrorCategoryAuthenticationReopenSession) 



    alertTitle = @"Session Error";
    alertMessage = @"Your current session is no longer valid. Please log in again.";
 else if (error.fberrorCategory == FBErrorCategoryUserCancelled) 


    NSLog(@"user cancelled login");
 else 

    alertTitle  = @"Unknown Error";
    alertMessage = @"Error. Please try again later.";
    NSLog(@"Unexpected error:%@", error);


if (alertMessage) 
    [[[UIAlertView alloc] initWithTitle:alertTitle
                                message:alertMessage
                               delegate:nil
                      cancelButtonTitle:@"OK"
                      otherButtonTitles:nil] show];




- (void)viewDidLoad

[FBLoginView class];

FBLoginView *loginView = [[FBLoginView alloc] init];
loginView.readPermissions= @[@"email", @"user_likes"];
loginView.publishPermissions = @[@"publish_actions"];
loginView.defaultAudience = FBSessionDefaultAudienceFriends;





FBSession *session = [[FBSession alloc] init];

[FBSession setActiveSession:session];

[session openWithBehavior:FBSessionLoginBehaviorWithNoFallbackToWebView
        completionHandler:^(FBSession *session,
                            FBSessionState status,
                            NSError *error) 


        ];
[FBRequestConnection startForMeWithCompletionHandler:^(FBRequestConnection *connection, id result, NSError *error) 
    if (!error) 

        regisrationdetails.firstname = [result objectForKey:@"name"];
    
];

NSLog(@"%@", regisrationdetails.firstname);

[FBRequestConnection
 startForMeWithCompletionHandler:^(FBRequestConnection *connection,
                                   id<FBGraphUser> user,
                                   NSError *error) 
     if (!error)    
         regisrationdetails.firstname = user.name;

         regisrationdetails.address1 = user.location[@"name"];


         regisrationdetails.city = user[@"city"];



         
 ];


 - (IBAction)CreateAccount:(id)sender
 


regisrationdetails.firstname=_FirstName.text;
regisrationdetails.lastname=_LastName.text;
regisrationdetails.email=_EmailAddress.text;
regisrationdetails.address1=_Address1.text;
regisrationdetails.address2=_Address2.text;
regisrationdetails.city=_City.text;
regisrationdetails.state=_State.text;
regisrationdetails.zip=_Zip.text;

NSURL *url = [[NSURL alloc]initWithString:[NSString stringWithFormat:@"%@first_name=%@&last_name=%@&email=%@&address_1=%@&address_2=%@&city=%@&state=%@&zip=%@&&fb_id=%@&action=fbsignin",MainURL, regisrationdetails.firstname,regisrationdetails.lastname,regisrationdetails.email,regisrationdetails.address1,regisrationdetails.address2,regisrationdetails.city,regisrationdetails.state,regisrationdetails.zip,regisrationdetails.fbid ]];
    NSError *errors;
    NSData *data = [NSData dataWithContentsOfURL:url];
    NSDictionary *json = (NSDictionary *)[NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&errors];
    status = json[@"status"];
    error = json[@"error"];
    user = json[@"user"];
  if ([status isEqualToString:@"success"])

    UIAlertView *success=[[UIAlertView alloc]initWithTitle:@"Success" message:nil delegate:self cancelButtonTitle:@"Close" otherButtonTitles:nil];
    [success show];

else if ([status isEqualToString:@"failure"])

    messages=[[NSString alloc]init];
    for (int i=0; i<[error count]; i++)
    
        messages=[messages stringByAppendingString:[error objectAtIndex:i]];
        messages=[messages stringByAppendingString:@"\n"];
    

    UIAlertView *failure=[[UIAlertView alloc]initWithTitle:@"Failure" message:messages delegate:self cancelButtonTitle:@"Close" otherButtonTitles: nil];
    [failure show];

 

是否有一个简单的示例代码可用于使用情节提要获取 facebook 用户信息？？

【参考方案1】：

确保你已经实现了 facebook 委托方法，

fbLoginview.delegate = self;

并实现该方法获取用户信息

- (void)loginViewFetchedUserInfo:(FBLoginView *)loginView
                            user:(id<FBGraphUser>)user 
    // here we use helper properties of FBGraphUser to dot-through to first_name and
    // id properties of the json response from the server; alternatively we could use


    NSLog(@"user :%@",user);

【讨论】：

视图出现了，我可以登录 FB 帐户。但它不要求任何许可或检索数据。