阅读此问题后:How to set back button text in Swift,
我开始将用于配置导航栏右键的代码移动到视图控制器,该控制器调用xib我呈现(ParticipantEditorViewController),如下所示:
import UIKit
class ViewController: UIViewController {
/*
* This is placeholder class. The code below will need to be added to whichever view controllers summon the participant editor, in their prepareForSegue method.
*/
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
print("snap")
if let participantEditor = segue.destinationViewController as? ParticipantEditorViewController {
print("crackle")
let barButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.Action, target: participantEditor, action: nil)
// let barButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.Action, target: participantEditor, action: Selector(participantEditor.presentActionMenu()))
print("pop")
navigationItem.rightBarButtonItem = barButton
}
}
}
但我还是无法以编程方式配置导航栏。对我失踪的任何帮助?
答案 0 :(得分:2)
当您转到另一个视图控制器时,将调用prepareForSegue
函数。如果要配置导航栏,请在将要显示此视图控制器时调用的其他函数中执行此操作,例如viewDidLoad
。