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如果facebook应用程序安装在iphone中或未安装，我想制作一个应用程序，要求在对话框中验证facebook登录。如果我注销facebook，那么它应该从facebook注销。我已将 facebook-ios-sdk 用于 facebook api 我的代码如下：

- (void)viewDidLoad
{
    _facebook=[[Facebook alloc] initWithAppId:appId andDelegate:self];

    self.navigationController.navigationBarHidden = YES;
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    if ([defaults objectForKey:@"FBAccessTokenKey"] && [defaults objectForKey:@"FBExpirationDateKey"])
    {
        _facebook.accessToken = [defaults objectForKey:@"FBAccessTokenKey"];
        _facebook.expirationDate = [defaults objectForKey:@"FBExpirationDateKey"];
    }

    [super viewDidLoad];
}

//点击登录按钮 

-(IBAction)Login
{
    NSLog(@"login called");

    if (![self connected])
    {
        UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"Connection" message:@"Internet is not Connected" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
        [alert show];[alert release];
    }
    else
    {
        if (suggestion==nil)
        {
            suggestion=[[Suggestions alloc] initWithNibName:@"Suggestions" bundle:nil];
        }
        [suggestion setReqFlg:YES];

        if (![_facebook isSessionValid]) 
        {
            NSLog(@"sesssion invalid u have to login...");
            [_facebook authorize:nil];
        }
        else
        {
            NSLog(@"valid and going on next page called graph API ");      

            [_facebook requestWithGraphPath:@"me?fields=id,name" andDelegate:self];
            suggestion.parentView=self;
            [self.navigationController pushViewController:suggestion animated:YES];
        }
    }
}



- (void)fbDidLogin
{
    NSLog(@"facebook did first login..");
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    [defaults setObject:[_facebook accessToken] forKey:@"FBAccessTokenKey"];
    [defaults setObject:[_facebook expirationDate] forKey:@"FBExpirationDateKey"];  
    [defaults synchronize];
    NSLog(@"called gtraph from login in facebook ");
    [_facebook requestWithGraphPath:@"me?fields=id" andDelegate:self];
    if (suggestion==nil)
    {
        suggestion=[[Suggestions alloc] initWithNibName:@"Suggestions" bundle:nil];
    }
    suggestion.parentView=self;
    [self.navigationController pushViewController:suggestion animated:YES];
}

- (void)fbDidLogout
{
    NSLog(@"logout");
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];

    [defaults removeObjectForKey:@"FBAccessTokenKey"];
    [defaults removeObjectForKey:@"FBExpirationDateKey"];
    [defaults removeObjectForKey:@"FBUserId"];

    [defaults synchronize];
}

我是否必须更改 facebook.m 文件或有另一种方法可以做到这一点。每次我单击登录按钮时，如果 facebook 注销，则应显示 facebook 登录对话框，如果 facebook 登录，则导航到下一个视图。不要打开 facebook 应用程序安装在 iphone 中用于登录目的。

给你的评论或答案我真的需要它。谢谢你！

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1 回答 1

1

进入 facebook.m 文件非常简单，使用 FBAppAuth 进行搜索，您会得到 3_4 个结果，例如：-

 [self authorizeWithFBAppAuth:YES safariAuth:YES];

只需将“是”更改为“否”，例如：-

 [self authorizeWithFBAppAuth:NO safariAuth:NO];

仅在 facebook.m 中更改它并编译并运行，当您单击 loginButton 时，您会得到 fblogin 对话框：)

编辑

我在我的应用登录页面上看到了我的登录对话框

脸书登录对话框

于 2012-09-24T13:04:56.687 回答