CODEWITHSUNDEEP
iosswiftcocoa-touchuikituibarbuttonitem
Cole
Cole

Reputation: 2646

Press UIBarButtonItem programmatically in swift?

I have a bar button item that I want to press programmatically, basically the equivalent of 

buttonObj.sendActionsForControlEvents(UIControlEvents.TouchUpInside)

but as a bar button item

edit: I forgot to mention, I can't simply call the action method for the button since I'm using the SWRevealViewController library and using their "revealToggle:" action on the bar button item, which I'm not sure how to call on its own.

Upvotes: 8

Views: 6590

Answers (3)

atereshkov
atereshkov

Reputation: 4565

Works in Swift 5:

_ = button.target?.perform(button.action, with: nil)

Upvotes: 6

Jim
Jim

Reputation: 136

Swift 4 (and 3) syntax

UIApplication.shared.sendAction(barButtonItem.action!, to: barButtonItem.target, from: self, for: nil)

Upvotes: 8

user3857868
user3857868

Reputation:

If you look at Objective-C equivalent questions, you'll see implementations that use performSelector:. In Swift, you don't have access to this method. Here's the official word on it from Apple:

The performSelector: method and related selector-invoking methods are not imported in Swift because they are inherently unsafe.

You can solve this problem by using UIApplication.sendAction(_:to:from:forEvent:) instead. Technically, you should be doing this in Objective-C too.

Let's say your UIBarButtonItem is defined as barButtonItem. The following code would do what you are asking.

UIApplication.sharedApplication().sendAction(barButtonItem.action, to: barButtonItem.target, from: self, forEvent: nil)

Upvotes: 16

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