自定义Facebook登录按钮iOS

Question

我刚刚将Facebook iOS SDK与我的应用程序集成,登录效果很好.也就是说,SDK似乎没有给我自定义登录按钮的选项(它为我提供了屏幕中间那个丑陋的默认按钮).我在我的应用程序中使用Storyboard - 如何将我自己的按钮连接到他们提供的代码？我已经看到一些较旧的答案发布到Stack,但FB文档已经改变了:/

Viewcontroller.m

 FBSDKLoginButton *loginButton = [[FBSDKLoginButton alloc] init];
 loginButton.center = self.view.center;
 [self.view addSubview:loginButton];

Answer 1

在故事板中创建自己的自定义按钮.将动作连接起来myButtonPressed.

- (void)viewDidLoad {
    [super viewDidLoad];
    self.loginButton = [[FBSDKLoginButton alloc] init];
    self.loginButton.hidden = YES;
}

- (void)myButtonPressed {
    [self.loginButton sendActionsForControlEvents: UIControlEventTouchUpInside];
}

Answer 2

针对Swift 3进行了更新

@IBAction func fblogin(_ sender: Any) {
    let loginManager = LoginManager()
    UIApplication.shared.statusBarStyle = .default  // remove this line if not required 
    loginManager.logIn([ .publicProfile,.email ], viewController: self) { loginResult in
        print(loginResult)

        //use picture.type(large) for large size profile picture
        let request = GraphRequest(graphPath: "me", parameters: ["fields":"email,name,gender,picture"], accessToken: AccessToken.current, httpMethod: .GET, apiVersion: FacebookCore.GraphAPIVersion.defaultVersion)
        request.start { (response, result) in
            switch result {
            case .success(let value):
                print(value.dictionaryValue)
            case .failed(let error):
                print(error)
            }
        }
    }
}

对于Objective-C

您可以在UIButtonclick事件 上调用此方法

-(void)fblogin{

   FBSDKLoginManager *login = [[FBSDKLoginManager alloc] init];
    if ([UIApplication.sharedApplication canOpenURL:[NSURL URLWithString:@"fb://"]])
    {
        login.loginBehavior = FBSDKLoginBehaviorSystemAccount;
    }

    [login logInWithReadPermissions:@[@"public_profile", @"email"] handler:^(FBSDKLoginManagerLoginResult *result, NSError *error) {
        if (error)
        {
            NSLog(@"Unexpected login error: %@", error);
            NSString *alertMessage = error.userInfo[FBSDKErrorLocalizedDescriptionKey] ?: @"There was a problem logging in. Please try again later.";
            NSString *alertTitle = error.userInfo[FBSDKErrorLocalizedTitleKey] ?: @"Oops";
            [[[UIAlertView alloc] initWithTitle:alertTitle
                                        message:alertMessage
                                       delegate:nil
                              cancelButtonTitle:@"OK"
                              otherButtonTitles:nil] show];
        }
        else
        {
            if(result.token)   // This means if There is current access token.
            {

                [[[FBSDKGraphRequest alloc] initWithGraphPath:@"me"
                                                   parameters:@{@"fields": @"picture, name, email"}]
                 startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id userinfo, NSError *error) {
                     if (!error) {


                         dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0ul);
                         dispatch_async(queue, ^(void) {

                            dispatch_async(dispatch_get_main_queue(), ^{

                                // you are authorised and can access user data from user info object 

                             });
                         });

                     }
                     else{

                         NSLog(@"%@", [error localizedDescription]);
                     }
                 }];
            }
            NSLog(@"Login Cancel");
        }
    }];
}