FBDialogs canPresentMessageDialogWithParams返回false

Question

我目前正在尝试将Facebook SDK添加到我的应用程序的iOS版本中.登录,注销,共享和请求功能目前都在工作,但我很难让MessageDialog功能正常工作.Facebook应用程序和Facebook Messenger应用程序目前已安装在我的设备上.但是,每当我调用'FBDialog canPresentMessageDialogWithParams:params'时,它返回false.

我的猜测是,当应用程序仍处于开发模式时,此功能不起作用,但这只是猜测.有没有人知道Message Dialog是否适用于正在开发的应用程序？或者你对我做错了什么有任何想法？

我还包括了我的代码,以防我犯了任何骨头错误.任何帮助是极大的赞赏!

// Check if the Facebook app is installed and we can present the share dialog
FBLinkShareParams *params = [[FBLinkShareParams alloc] init];
params.link = [NSURL URLWithString:@"https://www.facebook.com/"];
params.name = @"Flash Bear";
params.caption = nil;
params.picture = nil;
params.linkDescription = @"I'm playing Flash Bear. Why don't you come join me?";


// If the Facebook Messenger app is installed and we can present the share dialog
if ([FBDialogs canPresentMessageDialogWithParams:params]) {
    // Present message dialog


    [FBDialogs presentMessageDialogWithParams:params
                                  clientState:nil
                                      handler: ^(FBAppCall *call, NSDictionary *results, NSError *error) {
                                        if(error) {
                                            // An error occurred, we need to handle the error
                                            // See: https://developers.facebook.com/docs/ios/errors
                                            NSLog(@"Error messaging link: %@", error.description);
                                        } else {
                                            // Success
                                            NSLog(@"result %@", results);
                                        }
                                    }];
} else {
    // Present the feed dialog
    // Put together the dialog parameters

    UIAlertView *message = [[UIAlertView alloc] initWithTitle:@"Sorry!"
                                                      message:@"There was an error connecting to FB Messenger. Please make sure that it is installed."
                                                     delegate:nil
                                            cancelButtonTitle:@"OK"
                                            otherButtonTitles:nil];
    [message show];

}

Answer 1

我的应用程序也遇到了同样的问题。

我通过检查活动会话状态解决了这个问题。如果活动会话的状态不是打开，那么我们需要再次打开会话。

要执行相同的操作，请使用以下代码。

if([FBSession activeSession].state != FBSessionStateOpen){

   BOOL result = [FBSession openActiveSessionWithAllowLoginUI:NO];
   if(result)
   {
      //Do your stuff here
   }
}

好运。