Facebook iOS - handleOpenURL& Tabbar应用程序 [英] Facebook iOS - handleOpenURL & Tabbar Application

问题描述

我遇到困难让Facebook登录在我的应用程序中回到正确的视图，并调用相应的Facebook功能。

I'm having difficulties getting the Facebook Log In to kick back to the right view in my app and call the appropriate facebook functions.

在Facebook的这个例子中，Facebook只是简单的[控制器]。我正在使用Tabbar应用程序，因此我没有必要的参考。我指出了所需的视图，并使用它...正确打开，但不会调用任何与Facebook相关的方法，具体来说：

In the example Facebook has simply [controller facebook] that is the view they start with. I am using a tabbar application though so I don't have the necessary reference. I made a pointer to the desired view and used it... it opened correctly but would not call any of the methods associated with facebook, specifically:

(void)fbDidLogin;

(BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {
    return [[*NotReferencedViewController* facebook] handleOpenURL:url];
}

有没有人遇到这个？

推荐答案

不知道你在说什么，但是您应该将Facebook对象创建并存储在中心位置，例如Model或 UIApplicationDelegate 。然后，它将通过单例访问，以便您始终可以访问它，例如：

Not sure what example you're talking about, but you should create and store your Facebook object in a central place such as your Model or UIApplicationDelegate. Then it would be accessible through singletons so you always have access to it, for example:

[[UIApplication sharedApplication] delegate].facebook

所以你可以从控制器需要的任何视图访问Facebook对象。

So you can then access the facebook object from whatever view controllers need it.

当您执行类似

NSArray* permissions =  [[NSArray arrayWithObjects:@"email", @"read_stream", @"publish_stream", nil] retain];

[facebook authorize:permissions delegate:self];

指定委托：self 意味着您将实现Facebook可以通过这种方式通知您某些事件。其中一种方法是 fbDidLogin ，您可以在其中执行以下操作：

specifying delegate:self means you will implement methods in that class that Facebook can call to inform you of certain events. One of those methods is fbDidLogin, and in there you can do whatever you need to:

-(void)authorizeFacebook {
    NSArray* permissions =  [NSArray arrayWithObjects:@"email", @"read_stream", @"publish_stream", nil];

    [facebook authorize:permissions delegate:self];
}

// if the authorization succeeds it will come back to your app and call the method below
-(void)fbDidLogin {
    // switch view, call the facebook graph, or do whatever else you like
}

你可以这样做应用程序委托本身，或在视图控制器中。

You could do this in the app delegate itself, or in a view controller.

您可以通过检查facebook SDK的.h文件来查看Facebook代理方法：Facebook.h，FacebookRequest。 h等等

You can see the facebook delegate methods by inspecting the .h files of the facebook SDK: Facebook.h, FacebookRequest.h, etc.

修改

而您的 handleOpenURL：方法应该与fb的示例（假设您不处理其他url方案）完全一样：

And your handleOpenURL: method should look exactly as it does in fb's example (assuming you are not handling other url schemes):

- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {

    return [facebook handleOpenURL:url]; 
}

http://developers.facebook.com/docs/guides/mobile/#ios

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