【发布时间】：2019-10-20 12:38:45
【问题描述】：
试图总结我的代码。问题是我收到“newCalculator[2861:53607] -[UIButton buttonClicked:]: unrecognized selector sent to instance 0x7fd912651e50”错误并试图了解我需要做什么？我研究了一些改变选择器语法的解决方案，但是这个问题仍然存在。我想要的是；在stackview中，我添加了多个带有顺序的按钮，并且所有按钮在单击时都应该调用相同的函数。
o//
// ViewController.swift
// newCalculator
//
// Created by taylank on 17.10.2019.
// Copyright © 2019 TKT. All rights reserved.
//
import UIKit
var stackViews = [UIStackView]()
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
//Layer 1
let containerStackView1 = UIStackView()
containerStackView1.translatesAutoresizingMaskIntoConstraints = false
containerStackView1.axis = .vertical
containerStackView1.distribution = .fillEqually
containerStackView1.spacing = 1
//Layer 2
let topHalfView2 = UIView()
topHalfView2.translatesAutoresizingMaskIntoConstraints = false
topHalfView2.backgroundColor = .white
let botHalfView2 = UIView()
botHalfView2.translatesAutoresizingMaskIntoConstraints = false
//Layer 3
let topLabel3 = UILabel()
topLabel3.translatesAutoresizingMaskIntoConstraints = false
topLabel3.text = "0"
topLabel3.font = UIFont.boldSystemFont(ofSize: 40)
let containerStackView3 = UIStackView()
containerStackView3.translatesAutoresizingMaskIntoConstraints = false
containerStackView3.axis = .vertical
containerStackView3.distribution = .fillEqually
containerStackView3.spacing = 1
//Layer 4
stackViews = createStackViews(from: 0, to: 4, align: "h")
let yamaView = UIView()
yamaView.translatesAutoresizingMaskIntoConstraints = false
yamaView.backgroundColor = .black
//ADDING VIEWS TO SCENE .VIEW->Contstckview1->Top-BotHalfView->contstckview2-ResultLabel->horzstackviews
containerStackView1.addArrangedSubview(topHalfView2)
containerStackView1.addArrangedSubview(botHalfView2)
view.addSubview(containerStackView1)
topHalfView2.addSubview(topLabel3)
botHalfView2.addSubview(containerStackView3)
containerStackView3.addArrangedSubview(stackViews[0])
view.addSubview(yamaView)
//stackViews[0].topAnchor.constraint(equalTo: containerStackView3.topAnchor, constant: 0).isActive = true
for a in 1...stackViews.count-1{
containerStackView3.addArrangedSubview(stackViews[a])
// stackViews[a].leadingAnchor.constraint(equalTo: stackViews[0].leadingAnchor, constant: 0).isActive = true
// stackViews[a].trailingAnchor.constraint(equalTo: stackViews[0].trailingAnchor, constant: 0).isActive = true
}
//stackViews[0].leadingAnchor.constraint(equalTo: containerStackView3.leadingAnchor, constant: 0).isActive = true
// stackViews[0].trailingAnchor.constraint(equalTo: containerStackView3.trailingAnchor, constant: 0).isActive = true
//Uiheight--v:?--uibottom--uifillequ
//ConstraintsStackView1
containerStackView1.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 0).isActive = true
containerStackView1.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: 0).isActive = true
containerStackView1.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor, constant: 0).isActive = true
containerStackView1.heightAnchor.constraint(equalToConstant: view.frame.height).isActive = true
//TopHalfView2
topHalfView2.topAnchor.constraint(equalTo: containerStackView1.topAnchor, constant: 0).isActive = true
topHalfView2.leadingAnchor.constraint(equalTo: containerStackView1.leadingAnchor, constant: 0).isActive = true
topHalfView2.trailingAnchor.constraint(equalTo: containerStackView1.trailingAnchor, constant: 0).isActive = true
// topHalfView2.heightAnchor.constraint(equalToConstant: containerStackView1.frame.height/2).isActive = true
//creates problem conflicts with other constraint fill equally?
//BotHalfView2
botHalfView2.bottomAnchor.constraint(equalTo: containerStackView1.bottomAnchor, constant: 0).isActive = true
botHalfView2.leadingAnchor.constraint(equalTo: containerStackView1.leadingAnchor, constant: 0).isActive = true
botHalfView2.trailingAnchor.constraint(equalTo: containerStackView1.trailingAnchor, constant: 0).isActive = true
// botHalfView2.heightAnchor.constraint(equalToConstant: containerStackView1.frame.height/2).isActive = true
//topLabel3
topLabel3.bottomAnchor.constraint(equalTo: topHalfView2.bottomAnchor, constant: 0).isActive = true
topLabel3.trailingAnchor.constraint(equalTo: topHalfView2.trailingAnchor, constant: -5).isActive = true
//ConstraintsStackView3
containerStackView3.leadingAnchor.constraint(equalTo: botHalfView2.leadingAnchor, constant: 0).isActive = true
containerStackView3.trailingAnchor.constraint(equalTo: botHalfView2.trailingAnchor, constant: 0).isActive = true
containerStackView3.topAnchor.constraint(equalTo: botHalfView2.topAnchor, constant: 0).isActive = true
containerStackView3.bottomAnchor.constraint(equalTo: botHalfView2.bottomAnchor, constant: 0).isActive = true
//constraint button
stackViews[4].arrangedSubviews[2].widthAnchor.constraint(equalTo: stackViews[4].arrangedSubviews[1].widthAnchor,multiplier: 1).isActive = true //sonbutton bir yandakine
stackViews[4].arrangedSubviews[1].widthAnchor.constraint(equalTo: stackViews[4].arrangedSubviews[0].widthAnchor,multiplier: 0.5).isActive = true // ortadaki buton en soldakine
yamaView.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true
yamaView.topAnchor.constraint(equalTo: stackViews[4].bottomAnchor).isActive = true
yamaView.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
yamaView.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true
}
}
func createButtons(_ named: String...)->[UIButton]{
var c = 0
return named.map { name in
let button = UIButton()
button.translatesAutoresizingMaskIntoConstraints = false
button.setTitle(name, for: .normal)
button.backgroundColor = UIColor.gray
button.setTitleColor(.white, for: .normal)
button.layer.cornerRadius = 1
button.addTarget(button, action: #selector(buttonClicked) ,for:.touchUpInside)
return button
}
}
@objc func buttonClicked(_ sender:UIButton){
print("clicked")
}
func createStackViews(from x: Int,to y:Int, align type: String)->[UIStackView]{
// use tag instead of name---
//use dictionary..keys name values
if (type == "v"){
for a in x...y{
let stackVertical = UIStackView()
stackVertical.translatesAutoresizingMaskIntoConstraints = false
stackVertical.axis = .vertical
stackVertical.spacing = 1
stackVertical.distribution = .fillEqually
stackVertical.tag = a
}
}
else if(type=="h"){
var counter = 0
for a in x...y{
counter += 1
switch counter{
case 1: let stackHorizontal = UIStackView(arrangedSubviews:createButtons("Clear","+/-","%","÷"))
stackHorizontal.translatesAutoresizingMaskIntoConstraints = false
stackHorizontal.axis = .horizontal
stackHorizontal.spacing = 1
stackHorizontal.distribution = .fillEqually
stackHorizontal.tag = 90+a
stackViews.append(stackHorizontal)
case 2: let stackHorizontal = UIStackView(arrangedSubviews:createButtons("7","8","9","x"))
stackHorizontal.translatesAutoresizingMaskIntoConstraints = false
stackHorizontal.axis = .horizontal
stackHorizontal.spacing = 1
stackHorizontal.distribution = .fillEqually
stackHorizontal.tag = 100 + a
stackViews.append(stackHorizontal)
case 3: let stackHorizontal = UIStackView(arrangedSubviews:createButtons("4","5","6","-"))
stackHorizontal.translatesAutoresizingMaskIntoConstraints = false
stackHorizontal.axis = .horizontal
stackHorizontal.spacing = 1
stackHorizontal.distribution = .fillEqually
stackHorizontal.tag = 110+a
stackViews.append(stackHorizontal)
case 4: let stackHorizontal = UIStackView(arrangedSubviews:createButtons("1","2","3","+"))
stackHorizontal.translatesAutoresizingMaskIntoConstraints = false
stackHorizontal.axis = .horizontal
stackHorizontal.spacing = 1
stackHorizontal.distribution = .fillEqually
stackHorizontal.tag = 120 + a
stackViews.append(stackHorizontal)
case 5: let stackHorizontal = UIStackView(arrangedSubviews:createButtons("0",",","="))
stackHorizontal.translatesAutoresizingMaskIntoConstraints = false
stackHorizontal.axis = .horizontal
stackHorizontal.spacing = 1
stackHorizontal.distribution = .fillProportionally
stackHorizontal.tag = 130 + a
stackViews.append(stackHorizontal)
default:
break
}
}
return stackViews
}
return [UIStackView.init()]
}
------------解决方案----------
所有的函数都在 viewcontroller 类中
class ViewController: UIViewController {
override func viewDidLoad() {
stackViews = createStackViews(from: 0, to: 4, align: "h")
}
func createButtons(_ named: String...)->[UIButton]{
//codes
button.addTarget(self, action: #selector(buttonClicked) ,for:.touchUpInside)
//codes
}
@objc func buttonClicked(_ sender:UIButton){
print("clicked")
}
func createStackViews(from x: Int,to y:Int, align type: String)->[UIStackView]{
//codes
UIStackView(arrangedSubviews:createButtons("Clear","+/-","%","÷"))
//codes
}
}
【问题讨论】：
标签： swift uibutton selector uistackview