ios - UIActivity和AVAsset数据类型的用法

Question

根据UIActivity Class documentation，可以将AVAsset对象作为数据源添加到UIActivityTypePostToFacebook Activity 中。这是否意味着我们可以使用标准UIActivityTypePostToFacebook Activity 类型发布视频？如果不是，那么我可以使用AVAsset Activity 项目发布哪种项目？

Answer 1

好吧..根据UIActivity.h

UIKIT_EXTERN NSString *const UIActivityTypePostToFacebook   NS_AVAILABLE_IOS(6_0); // text, images, URLs
UIKIT_EXTERN NSString *const UIActivityTypePostToTwitter    NS_AVAILABLE_IOS(6_0); // text, images, URLs
UIKIT_EXTERN NSString *const UIActivityTypePostToWeibo      NS_AVAILABLE_IOS(6_0); // text, images, URLs
UIKIT_EXTERN NSString *const UIActivityTypeMessage          NS_AVAILABLE_IOS(6_0); // text
UIKIT_EXTERN NSString *const UIActivityTypeMail             NS_AVAILABLE_IOS(6_0); // text, image, file:// URLs
UIKIT_EXTERN NSString *const UIActivityTypePrint            NS_AVAILABLE_IOS(6_0); // image, NSData, file:// URL, UIPrintPageRenderer, UIPrintFormatter, UIPrintInfo
UIKIT_EXTERN NSString *const UIActivityTypeCopyToPasteboard NS_AVAILABLE_IOS(6_0); // text, image, NSURL, UIColor, NSDictionary
UIKIT_EXTERN NSString *const UIActivityTypeAssignToContact  NS_AVAILABLE_IOS(6_0); // image
UIKIT_EXTERN NSString *const UIActivityTypeSaveToCameraRoll NS_AVAILABLE_IOS(6_0); // image, video

仅在 UIActivityTypeSaveToCameraRoll的注释中提到了视频。这意味着使用这些标准 Activity 类型只能将图像添加为AVAsset实例。