确定使用哪个共享扩展

Question

由于UIActivityViewController上的completionHandler在iOS 8中已弃用，是否有任何方法可以确定用户使用了哪个共享扩展/活动？

Answer 1

你只需要使用新的处理程序UIActivityViewControllerCompletionWithItemsHandler：

typedef void (^UIActivityViewControllerCompletionWithItemsHandler)(NSString *activityType, BOOL completed, NSArray *returnedItems, NSError *activityError); 

这样称呼它：

[yourActivityVC setCompletionWithItemsHandler:^(NSString *activityType, BOOL completed, NSArray *returnedItems, NSError *activityError){ 

}]; 

此外，如果你想知道知道什么项目被选中，你只需确保您的活动项目符合UIActivityItemSource协议;

UIActivityItemSource Protocol Documentation

Answer 2

setCompletionWithItemsHandler只有iOS8上。如果您需要支持iOS6-7则：

[yourActivityVC setCompletionHandler:^(NSString *activityType, BOOL completed){ 

}]; 

Answer 3

这是我们在斯威夫特使用：

... 

    // Configure UIActivityViewController 
    let activityViewController = UIActivityViewController(activityItems: objectsToShare, applicationActivities: nil) 
    activityViewController.excludedActivityTypes = [UIActivityTypeAirDrop, 
     UIActivityTypeAddToReadingList, 
     UIActivityTypeAssignToContact, 
     UIActivityTypePrint, 
     UIActivityTypeCopyToPasteboard] 

    // Show UIActivityViewController 
    presentViewController(activityViewController, animated: true, completion: nil) 

    // Define completion handler 
    activityViewController.completionWithItemsHandler = doneSharingHandler 

    ... 

func doneSharingHandler(activityType: String?, completed: Bool, returnedItems: [AnyObject]?, error: NSError?) { 
    // Return if cancelled 
    if (!completed) { 
     return 
    } 

    // If here, log which activity occurred 
    println("Shared video activity: \(activityType)") 
}