Determine which share extension was used

Question

Since the completionHandler on UIActivityViewController was deprecated in iOS 8, is there any way to determine which share extension/activity was used by the user?

Answer 1

You just need to use the new handler UIActivityViewControllerCompletionWithItemsHandler:

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

Call it like this:

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

}];

Additionally, if you're wondering about knowing what item was selected, you just need to ensure your activity items conform to the UIActivityItemSource protocol;

UIActivityItemSource Protocol Documentation

Answer 2

setCompletionWithItemsHandler is iOS8 only. If you need to support iOS6-7 then:

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

}];