Ios 为什么FBSDK共享对话框不能与图像附件一起使用？

我想在Facebook上分享图片，为此我做了：

let photo: FBSDKSharePhoto = FBSDKSharePhoto()
photo.image = croppedImage
photo.userGenerated = true
photo.caption = "Add Your caption"

let content: FBSDKSharePhotoContent = FBSDKSharePhotoContent()
content.photos = [photo]

FBSDKShareDialog.showFromViewController(self, withContent: content, delegate: nil)

但它没有显示ShareViewController。但当我尝试这段代码时：

let content: FBSDKShareLinkContent = FBSDKShareLinkContent()
content.contentURL = NSURL(string: "http://")
content.contentTitle = "App Testing"
content.contentDescription = "I'm working over the app!"

---

如何修复第一个代码段？

我知道这是一个老问题，但以防有人面临同样的问题：

根据，您需要安装本机Facebook应用程序才能使用

FBSDKSharePhotoContent

，在这种情况下，您不能使用

FBSDKShareDialog

实现几乎相同结果的一个解决办法是使用

FBSDKShareDialog

（它只支持

FBSDKShareLinkContent

），如下所示：

let content: FBSDKShareLinkContent = FBSDKShareLinkContent()
content.imageURL = URL(string: "www.example.com/my_image.jpg")
content.contentURL = URL(string: "www.example.com/target_url")
content.contentTitle = "My Title"
content.contentDescription = "My Description"

let dialog: FBSDKShareDialog = FBSDKShareDialog()
dialog.fromViewController = self
dialog.delegate = self      // make sure to conform to FBSDKSharingDelegate protocol
dialog.shareContent = content
if !dialog.canShow() {
    // fallback to non-native mode
    dialog.mode = .feedBrowser
}
dialog.show()

---

您可以找到协议的方法。

它仅在安装Facebook应用程序时有效。另外，明确指定

mode=.native

let content = FBSDKSharePhotoContent()
    let photo = FBSDKSharePhoto(image: image, userGenerated: true)
    content.photos = [photo].flatMap({ $0 })

    let dialog = FBSDKShareDialog()
    dialog.fromViewController = viewController
    dialog.shareContent = content
    dialog.delegate = self
    dialog.mode = .native

    dialog.show()

如果没有，它将使用

SLComposeViewController

，您将得到错误消息

SLComposeViewController isAvailableForServiceType got serviceType com.apple.social.facebook isAvailable 0

好的做法是在

FBSDKShareDialog.m

上进行调试，看看事情是否适合您

- (BOOL)show
{
  BOOL didShow = NO;
  NSError *error = nil;

  if ([self _validateWithError:&error]) {
    switch (self.mode) {
      case FBSDKShareDialogModeAutomatic:{
        didShow = [self _showAutomatic:&error];
        break;
      }
      case FBSDKShareDialogModeBrowser:{
        didShow = [self _showBrowser:&error];
        break;
      }
      case FBSDKShareDialogModeFeedBrowser:{
        didShow = [self _showFeedBrowser:&error];
        break;
      }
      case FBSDKShareDialogModeFeedWeb:{
        didShow = [self _showFeedWeb:&error];
        break;
      }
      case FBSDKShareDialogModeNative:{
        didShow = [self _showNativeWithCanShowError:&error validationError:&error];
        break;
      }
      case FBSDKShareDialogModeShareSheet:{
        didShow = [self _showShareSheetWithCanShowError:&error validationError:&error];
        break;
      }
      case FBSDKShareDialogModeWeb:{
        didShow = [self _showWeb:&error];
        break;
      }
    }
  }
  if (!didShow) {
    [self _invokeDelegateDidFailWithError:error];
  } else {
    [self _logDialogShow];
    [FBSDKInternalUtility registerTransientObject:self];
  }
  return didShow;
}

经验教训：

• 注意FB的变化
• 每天早上检查更改日志
• 今天起作用的东西明天可能不起作用

---

您是否安装了Facebook应用程序

FBSDKSharePhoto

需要该应用程序。From:“人们需要安装iOS应用程序的本机Facebook，7.0或更高版本”@ama1111当然

FBSDKShareLinkContent

起作用，但

FBSDKSharePhotoContent

-若不获取更多信息，您可以实现

FBSDKSharingDelegate

，从视图控制器传递到

showFromViewController

，并查看它为

didFailWithError

@ama1111报告的内容。您能帮我举个例子吗？实现

FBSDKSharingDelegate

；SDK中将提到的内容属性标记为已弃用