仅通过AirDrop共享

Question

我想以AirDrop作为我的应用程序中的唯一选项来展示股票表。

在iOS 7中，我可以简单地将所有共享类型添加到UIActivityViewController的excludedActivityTypes属性(UIActivityTypeMessage，UIActivityTypeMail，.)

但是现在在iOS 8中，随着应用程序的扩展，用户可能会有额外的共享提供商出现。有没有办法只显示AirDrop

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];

Answer 1

SWIFT4.2版的琼尼的回答

class AirDropOnlyActivityItemSource: NSObject, UIActivityItemSource {
    ///The item you want to send via AirDrop.
    let item: Any

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

    func activityViewControllerPlaceholderItem(_ activityViewController: UIActivityViewController) -> Any {
        //using NSURL here, since URL with an empty string would crash
        return NSURL(string: "")!
    }

    func activityViewController(_ activityViewController: UIActivityViewController, itemForActivityType activityType: UIActivity.ActivityType?) -> Any? {
        return item
    }
}

使用：

let itemSource = AirDropOnlyActivityItemSource(item: "test")

let activityVc = UIActivityViewController(activityItems: [itemSource], applicationActivities: nil)

Answer 2

目前还不可能。您应该提交一个苹果增强要求，解释为什么这对用户/开发人员有用。