显示Facebook的用户配置文件图像从URL到图像视图

Question

我有一个由Facebook配置文件获取的图像的URL。我获取这些url并复制到字符串“urlpicture”。在url图片我的网址显示，但是当我传入另一个文件中的字符串类型属性“geturl”。当我进入另一个文件“geturl”时为零。

这就是为什么我不能在图像视图上显示图像。我只能以字符串格式保存图像网址。我应该在另一个视图上显示我的图像。

  - (void) loginButton:(FBSDKLoginButton *)loginButton 
      didCompleteWithResult:(FBSDKLoginManagerLoginResult *)result 
          error:(NSError *)error 
      { 
       FBSDKGraphRequest *request = [[FBSDKGraphRequest alloc] 
               initWithGraphPath:@"/me" 
               parameters:@{ @"fields": @"id,name,picture,email,gender"} 
               HTTPMethod:@"GET"]; 
       [request startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error) { 
        // Insert your code here 
        NSLog(@"%@",result); 
        if ([result isKindOfClass:[NSDictionary class]]) 
      { NSDictionary *pictureData = [result valueForKey:@"picture"]; 
         NSDictionary *redata = [pictureData valueForKey:@"data"]; 
           _urlpicture = [redata valueForKey:@"url"]; 

        } 





       }]; 


       HomeViewController *pushWithSlot=[self.storyboard instantiateViewControllerWithIdentifier:@"HomeViewController"]; 

       [self.navigationController setViewControllers:@[pushWithSlot] animated:YES]; 
       pushWithSlot.geturl=_urlpicture; 

Answer 1

试试这个，导航

HomeViewController *pushWithSlot=[self.storyboard instantiateViewControllerWithIdentifier:@"HomeViewController"]; 

pushWithSlot.geturl=_urlpicture; 
[self.navigationController setViewControllers:@[pushWithSlot] animated:YES]; 

上面一个没有工作之前，实际上传递变量，尝试这样做的原因是URL里面你块

{ NSDictionary *pictureData = [result valueForKey:@"picture"]; 
        NSDictionary *redata = [pictureData valueForKey:@"data"]; 
          _urlpicture = [redata valueForKey:@"url"]; 

     // call after URL Fetch 
       HomeViewController *pushWithSlot=[self.storyboard instantiateViewControllerWithIdentifier:@"HomeViewController"]; 

pushWithSlot.geturl=_urlpicture; 
[self.navigationController setViewControllers:@[pushWithSlot] animated:YES]; 
       } 

然后试试这个

{ NSDictionary *pictureData = [result valueForKey:@"picture"]; 
        NSDictionary *redata = [pictureData valueForKey:@"data"]; 
          _urlpicture = [redata valueForKey:@"url"]; 

     // call after URL Fetch 
       HomeViewController *pushWithSlot=[self.storyboard instantiateViewControllerWithIdentifier:@"HomeViewController"]; 

pushWithSlot.geturl=pushWithSlot; 
[self presentViewController:pushWithSlot 
       animated:YES 
      completion:nil]; 
       }