打开 facebook 对话框进行身份验证，而不是在 iphone 中安装 facebook 应用程序？

Question

我想制作一个应用程序，询问是否在 iphone 中安装或未安装 facebook 应用程序时在对话框中对 facebook 登录进行身份验证。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];
}

我是否必须在 facebook.m 文件中进行更改，或者有其他方法可以做到这一点。每次我点击登录按钮时，如果 facebook 已注销，则应显示 facebook 登录对话框；如果 facebook 已登录，则导航到下一个视图。不要打开安装在 iphone 中的 facebook 应用程序以进行登录。

给你的评论或答案我真的需要它。 谢谢你！

Answer 1

进入 facebook.m 文件很简单，使用 FBAppAuth 搜索，你会得到 3_4 个结果，例如：-

 [self authorizeWithFBAppAuth:YES safariAuth:YES];

只需将 YES 更改为 NO，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 时会出现 fblogin 对话框:)

编辑

我的应用登录页面上有登录对话框