ios - IQKeyboardManagerSwift pod install : How to implement Done button action in swift -


i'm using following library (which helps manage multiple textfields)

pod 'iqkeyboardmanagerswift', '~> 4.0'

my question how got implement done button action in our viewcontroller ? refer link.
in iquiview+iqkeyboardtoolbar.swift file method available.

public func adddoneonkeyboardwithtarget(_ target : anyobject?, action : selector) {          adddoneonkeyboardwithtarget(target, action: action, titletext: nil)     }

but don't understand how implement in swift code. please me..

you can call on textfield object. example 

[textfield1 adddoneonkeyboardwithtarget:@selector(doneaction:)]; /*! doneaction. */ -(void)doneaction:(uibarbuttonitem*)barbutton {     //doneaction }

swift version: 

textfield1.adddoneonkeyboardwithtarget(self, action: #selector(self.doneaction(_:)), shouldshowplaceholder: true)  func doneaction(_ sender : uitextfield!) {     self.view.endediting(true) }

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