ios – 我的应用程序中缺少某些UIActivityViewController服务

我想的是：

1.)这些额外服务已使用UIActivityItemProvider,UIActivityItemsource等在Photos应用程序中实现为自定义服务.

2.)我提供的数据格式不正确,无法与这些服务一起使用.

我已经阅读了几次文档,但似乎没有看到任何相关内容.

编辑：按要求显示代码：

#define SM_SHARE_IMAGE_AND_StriNG 1

-(void)actionToolbarViewControllerUserTappedShareButton:(smactionToolbarViewController*)sender{
    // Reposition anchor view for UIPopoverController to point at
    [self repositionAnchorViewToButtonFrame:self.actionToolbarViewController.shareButtonFrame];

    // Asynch download of image
    [SMUtility downloadAsset:self.SELEctedAsset completion:^(UIImage *imagE) {
        // Create image source
        smactivitysource *activityImagesource = [[smactivitysource alloc]initWithImage:image];
#if Defined(SM_SHARE_IMAGE_AND_StriNG)
        // Create String source
        NSString *assetsString = [SMUtility assetsString:[NSArray arrayWithObject:self.SELEctedAsset]];
        smactivitysource *activityStringsource = [[smactivitysource alloc]initWithString:assetsString];

        // Present UIActiviyViewController within an UIPopoverController
        NSArray *items = [@[activityImagesource,activityStringsource]mutableCopy];
#else
        NSArray *items = [@[activityImagesource]mutableCopy];
#endif

        UIActivityViewController *activityViewController = [[UIActivityViewController alloc]initWithActivityItems:items applicationActivities:nil];
        [activityViewController setCompletionHandler:^(NSString *activityType,BOOL completed){
            [SMMixPanel eventSharePhotoMethod:@"Share"];
        }];
        self.buttonPopoverController = [[UIPopoverController alloc] initWithContentViewController:activityViewController];
        [self.buttonPopoverController presentPopoverFromRect:self.anchorView.frame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
    }];
}