iOS Facebook sdk 4.0 分享图片

Question

我正在尝试使用新的 facebook sdk 4.0 分享图片。我在 Facebook 示例中使用了相同的代码，但是当我尝试显示 FBSDKShareDialog 时出现此异常。

* Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Unable to parse the format string "SELF NOT NULL"' * First throw call stack: ( 0 CoreFoundation 0x000000010b782a75 __exceptionPreprocess + 165 1 libobjc.A.dylib
0x000000010b35abb7 objc_exception_throw + 45 2 Foundation
0x000000010aca097d _qfqp2_performParsing + 8495 3 Foundation
0x000000010ac9e7e6 +[NSPredicate predicateWithFormat:arguments:] + 46 4 Foundation 0x000000010ac9e7a0 +[NSPredicate predicateWithFormat:] + 142 5 PhotoGunShot 0x0000000107f1a4fc -[FBSDKShareDialog _showShareSheetWithCanShowError:validationError:] + 653 6 PhotoGunShot 0x0000000107f18f7b -[FBSDKShareDialog show] + 147

这是代码

- (UIAlertAction*) createActionForFacebookWithMediaPath:(NSString*) path andMediaType:(MediaType) mediaType {
    NSString * mediaName = mediaType == kMediaTypeImage ? NSLocalizedString(@"KEY_IMAGE", nil) : NSLocalizedString(@"KEY_VIDEO", nil);
    UIAlertAction* facebookAction = [UIAlertAction actionWithTitle:[NSString stringWithFormat:@"%@ %@",NSLocalizedString(@"KEY_SHARE_YOUR", nil),mediaName] style:UIAlertActionStyleDefault
                                                          handler:^(UIAlertAction * action) {
                                                              NSObject<FBSDKSharingContent> * content = nil;
                                                              if (mediaType == kMediaTypeImage) {
                                                                  NSURL * fileURL = [NSURL URLWithString:path];
                                                                  FBSDKSharePhoto *photo = [[FBSDKSharePhoto alloc] init];
                                                                  photo.imageURL = fileURL;
//                                                                  photo.userGenerated = YES;
                                                                  FBSDKSharePhotoContent * photoContent = [[FBSDKSharePhotoContent alloc] init];
                                                                  photoContent.photos = @[photo];
                                                                  content = photoContent;
                                                              }
                                                              else if (mediaType == kMediaTypeVideo) {
                                                                  NSURL *videoURL = [NSURL fileURLWithPath:path];

                                                                  FBSDKShareVideo *video = [[FBSDKShareVideo alloc] init];
                                                                  video.videoURL = videoURL;
                                                                  FBSDKShareVideoContent * videoContent = [[FBSDKShareVideoContent alloc] init];
                                                                  videoContent.video = video;
                                                                  content = videoContent;
                                                              }
                                                                  [FBSDKShareDialog showFromViewController:self
                                                                                               withContent:content
                                                                                                  delegate:nil];

                                                          }];
    return facebookAction;

}
- (UIAlertAction*) createActionForCameraRollWithMediaPath:(NSString*) path andMediaType:(MediaType) mediaType {
    return nil;

}
- (void) showShareOptionsForMediaPath:(NSString*)path {
    UIAlertController * alertControl =[UIAlertController alertControllerWithTitle:NSLocalizedString(@"KEY_SHARE_TITLE", nil) message:nil preferredStyle:UIAlertControllerStyleActionSheet];
    UIAlertAction * cancelAction = [UIAlertAction actionWithTitle:NSLocalizedString(@"KEY_CANCEL", nil) style:UIAlertActionStyleCancel handler:NULL];
    [alertControl addAction:cancelAction];
    MediaType mediaType = [self checkMediaTypeAtPath:path];
    switch (mediaType) {
        case kMediaTypeImage:
        {
            UIAlertAction * fbAction =[self createActionForFacebookWithMediaPath:path andMediaType:kMediaTypeImage];
            [alertControl addAction:fbAction];
        }
            break;
        case kMediaTypeVideo:
        {
            UIAlertAction * fbAction =[self createActionForFacebookWithMediaPath:path andMediaType:kMediaTypeVideo];
            [alertControl addAction:fbAction];

        }
            break;
        case kMediaTypeUnknown:
        {
            //EXCEPTION
        }
            break;
        default:
            break;
    }

    [self presentViewController:alertControl animated:YES completion:nil];
}

首先我创建了一个显示共享选项的 UIAlertController，并添加了相关的 UIAlertAction，当我调用共享对话框时会产生异常。
有什么建议吗？

Answer 1

此问题将在下一个 SDK 版本中修复。

显然，您可以从 FBSDKShareDialog 中删除以下行，并从源代码构建框架以解决它。 https://github.com/facebook/facebook-ios-sdk/blob/master/FBSDKShareKit/FBSDKShareKit/FBSDKShareDialog.m#L442

您可以在此处查看 Andrea 提交的错误:https://developers.facebook.com/bugs/964300063610778/