How to use BBBadgeBarButtonItem in swift

问题

I want badge on a BarButton and I came across BBBadgeBarButtonItem but I am not sure if this will work in swift or not.

1. is it possible ?
2. if yes how ?

PS I am very new to iOS and swift

When I try to use it like the readme file says, I am getting an error at import line "Expected Identifier at import declaration"

回答1:

You need what's called an Objective-C bridging header since BBBadgeBarButtonItem is written in Objective-C and your project is Swift.

See http://www.learnswiftonline.com/getting-started/adding-swift-bridging-header/ on how to create the bridging header.

Once you've properly created your bridging header you'll then add the following to it:

#import BBBadgeBarButtonItem.h

You should then be able to do something like (untested):

let customButton = UIButton()
let barButton = BBBadgeBarButtonItem(customUIButton: customButton)
barButton.badgeValue = 1

回答2:

Import it in you bridging header like this:

#import <BBBadgeBarButtonItem/BBBadgeBarButtonItem.h>

来源：https://stackoverflow.com/questions/30562831/how-to-use-bbbadgebarbuttonitem-in-swift