How to delete a specific NSUserActivity search index?

Question

I use NSUserActivity to index a user activity for searching. I found a solution to delete a specific NSUserActivity, assign a CSSearchableItemAttributeSet with relatedUniqueIdentifier to NSUserActivity:

let attributeSet = CSSearchableItemAttributeSet(itemContentType: kUTTypeContact as String)
attributeSet.relatedUniqueIdentifier = objectId

let activity = NSUserActivity(activityType: Employee.domainIdentifier)
activity.title = name
activity.userInfo = userActivityUserInfo
activity.keywords = [email, department]
activity.contentAttributeSet = attributeSet

And delete it use

[[CSSearchableIndex defaultSearchableIndex] 
deleteSearchableItemsWithIdentifiers: objectId completionHandler:^(NSError *deletionError) {  
        if (deletionError) {  
            NSLog(@"Could not delete items from the search index with error %@", deletionError);  
        }  
    }];

I don't know if it is a right solution or not. Do you have a better solution to delete a specific NSUserActivity search index?

U can try `deleteSearchableItemsWithIdentifiers` or `deleteSearchableItemsWithDomainIdentifiers` then readd? — Tj3n, Jan 07 '16 at 04:35
@Tj3n Oh, that is my current solution, one vote up for you. Sorry because I miss delete method in code. I will edit above code. My question is, it has other solutions to delete use NSUserActivity method, instead of linking NSUserActivity to a CSSearchableItemAttributeSet and delete use Core Spotlight medthod? — huynguyen, Jan 07 '16 at 04:48
From my knowledge then no :/ I always have to use those code when i want to delete some searchable item — Tj3n, Jan 07 '16 at 05:11

score 0 · Answer 1 · answered May 15 '19 at 17:37

As of iOS 12, there are 2 methods to delete NSUserActivity

class func deleteAllSavedUserActivities(completionHandler: () -> Void)

class func deleteSavedUserActivities(withPersistentIdentifiers: [NSUserActivityPersistentIdentifier], completionHandler: () -> Void)

The docs note "Deletes all user activities stored by Core Spotlight or donated as Siri shortcuts."

https://developer.apple.com/documentation/foundation/nsuseractivity

How to delete a specific NSUserActivity search index?

1 Answers1

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