仅通过AirDrop共享 [英] Share via AirDrop only

问题描述

我想在我的应用程序中使用AirDrop作为唯一选项来显示共享表.

I want to bring out the share sheet with the AirDrop as the only option in my application.

在iOS 7中，我可以将所有共享类型简单地添加到 UIActivityViewController ( UIActivityTypeMessage ， UIActivityTypeMail ，...)

In iOS 7, I could simple add all share types to the excludedActivityTypes property of UIActivityViewController (UIActivityTypeMessage, UIActivityTypeMail, ...)

但是现在在iOS 8中，随着应用程序扩展，用户可能会出现额外的共享提供程序.有什么办法只显示AirDrop ?

But now in iOS 8, with the app extensions, the users may have extra sharing providers that show up. Is there any way to show AirDrop only?

UIActivityViewController *controller = [[UIActivityViewController alloc] initWithActivityItems:@[[NSURL URLWithString:url]]
                                                                         applicationActivities:nil];

NSArray *excludedActivities = @[UIActivityTypePostToTwitter, UIActivityTypePostToFacebook,
                                UIActivityTypePostToWeibo,
                                UIActivityTypeMessage, UIActivityTypeMail,
                                UIActivityTypePrint, UIActivityTypeCopyToPasteboard,
                                UIActivityTypeAssignToContact, UIActivityTypeSaveToCameraRoll,
                                UIActivityTypeAddToReadingList, UIActivityTypePostToFlickr,
                                UIActivityTypePostToVimeo, UIActivityTypePostToTencentWeibo];

推荐答案

class AirDropOnlyActivityItemSource : NSObject, UIActivityItemSource {

    /// The item you want to send via AirDrop.
    let item: AnyObject

    init(item: AnyObject) {
        self.item = item
    }

    func activityViewControllerPlaceholderItem(activityViewController: UIActivityViewController) -> AnyObject {
        /// Use an empty URL as placeholder to let iOS Share Sheet show the AirDrop only.
        return NSURL(string: "")!
    }

    func activityViewController(activityViewController: UIActivityViewController, itemForActivityType activityType: String) -> AnyObject? {
        return item
    }   
}

这篇关于仅通过AirDrop共享的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！