swift - #selector 未解析的标识符函数

Question

在 init 函数中，#selector 似乎找不到调用函数。

这是类

import UIKit

protocol ExpandableHeaderViewDelegate {
func toggleSection(header: ExpandableHeaderView, section: Int)
}

class ExpandableHeaderView: UITableViewHeaderFooterView {
var delegate: ExpandableHeaderViewDelegate?
var section: Int!

@IBOutlet weak var titleLabel: UILabel!

  override init(reuseIdentifier: String?){
    super.init(reuseIdentifier: reuseIdentifier)
    self.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(selectHeaderView(_:))))

}

@objc func selectHeaderView(gesture: UITapGestureRecognizer){
    let cell = gesture.view as! ExpandableHeaderView
    delegate?.toggleSection(header: self, section: cell.section)
}

required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
    self.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(selectHeaderView(_:))))
}


func custonInt(title: String, section: Int, delegate:   ExpandableHeaderViewDelegate){

    self.titleLabel.text = title
    self.section = section
    self.delegate = delegate
}

override func layoutSubviews(){
    super.layoutSubviews()
    self.titleLabel.textColor = UIColor.white
    self.contentView.backgroundColor = UIColor.darkGray
}

这里是错误:

Use of unresolved identifier 'selectHeaderView'

初始化函数添加手势识别器找不到selectHeaderView。它的行为就好像它不是类(class)的一部分。我做错了什么？

Answer 1

改变这个:

self.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(selectHeaderView(_:))))

到:

self.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(selectHeaderView(gesture:))))