在我的应用程序中一切正常，我唯一的问题是，当我加载应用程序时，第一个视图无法正常工作。
当我点击错误的答案时，应用程序什么都不做。当我选择正确的答案时，我必须点击两次。
我该如何解决这个问题？
//
// EViewController.swift
// imageMeaning
//
// Created by RaduVille on 17/08/17.
// Copyright © 2017 RaduVille. All rights reserved.
//
//
// MViewController.swift
// imageMeaning
//
// Created by RaduVille on 17/08/17.
// Copyright © 2017 RaduVille. All rights reserved.
//
import UIKit
class EViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
currentQuestion = questions[0]
setQuestion()
firstOption.isUserInteractionEnabled = true
secondOption.isUserInteractionEnabled = true
thirdOption.isUserInteractionEnabled = true
allowedToGoFurther = 0
}
override func viewDidAppear(_ animated: Bool) {
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// imageMeaning starts here
//layout links to the code starts here
//this IBOutlet represints the message shown on top
@IBOutlet weak var topMessage: UILabel!
// these outlets represints the text shown on the buttons
@IBOutlet weak var firstOption: UIButton!
@IBOutlet weak var secondOption: UIButton!
@IBOutlet weak var thirdOption: UIButton!
//represints the images on the right "✅" or "❌"
@IBOutlet weak var firstImage: UIImageView!
@IBOutlet weak var secondImage: UIImageView!
@IBOutlet weak var thirdImage: UIImageView!
//this is the big image on the left
@IBOutlet weak var leftImage: UIImageView!
@IBOutlet weak var nextB: UIButton!
@IBAction func nextButton(_ sender: Any) {
//this is the next button
if allowedToGoFurther == 0 {
self.nextB.isEnabled = false
}
if(currentQuestionPos + 1 < questions.count) {
currentQuestionPos += 1
currentQuestion = questions[currentQuestionPos]
setQuestion()
firstImage.image = UIImage(named: "question.png")
secondImage.image = UIImage(named: "question.png")
thirdImage.image = UIImage(named: "question.png")
firstOption.isUserInteractionEnabled = true
secondOption.isUserInteractionEnabled = true
thirdOption.isUserInteractionEnabled = true
} else {
loadNextQuestion()
firstImage.image = UIImage(named: "question.png")
secondImage.image = UIImage(named: "question.png")
thirdImage.image = UIImage(named: "question.png")
}
}
struct Question {
let image: UIImage
let answers: [String]
let correctAnswer: Int
let corect: String
}
var questions: [Question] = [
Question(
image: UIImage(named: "palla")!,
answers: ["cerchio", "palla", "aereo"],
correctAnswer: 1,
corect: "palla"),
Question(
image: UIImage(named: "guanto")!,
answers: ["guanto", "maglietta", "calzino"],
correctAnswer: 0,
corect: "guanto"),
Question(
image: UIImage(named: "casa")!,
answers: ["albero", "macchina", "casa"],
correctAnswer: 2,
corect: "casa"),
Question(
image: UIImage(named: "cerchio")!,
answers: ["cerchio", "sole", "palla"],
correctAnswer: 0,
corect: "cerchio"),
Question(
image: UIImage(named: "lego")!,
answers: ["bambola", "lego", "panino"],
correctAnswer: 1,
corect: "lego"),
Question(
image: UIImage(named: "chiavi")!,
answers: ["porta", "pizza", "chiavi"],
correctAnswer: 2,
corect: "chiavi"),
Question(
image: UIImage(named: "tazza")!,
answers: ["tazza", "forchetta", "piatto"],
correctAnswer: 0,
corect: "tazza"),
Question(
image: UIImage(named: "aereo")!,
answers: ["bicicletta", "gelato", "aereo"],
correctAnswer: 2,
corect: "aereo"),
Question(
image: UIImage(named: "macchina")!,
answers: ["televisore", "macchina", "pattini"],
correctAnswer: 1,
corect: "macchina"),
Question(
image: UIImage(named: "libro")!,
answers: ["scatola", "foglio", "libro"],
correctAnswer: 2,
corect: "libro"),
Question(
image: UIImage(named: "piano")!,
answers: ["piano", "chittara", "arpa"],
correctAnswer: 0,
corect: "piano"),
Question(
image: UIImage(named: "dadi")!,
answers: ["dadi", "ghiaccio", "cubo"],
correctAnswer: 0,
corect: "dadi"),
Question(
image: UIImage(named: "pizza")!,
answers: ["hamburger", "panino", "pizza"],
correctAnswer: 2,
corect: "pizza"),
Question(
image: UIImage(named: "palla")!,
answers: ["cerchio", "palla", "aereo"],
correctAnswer: 1,
corect: "palla")
]
var currentQuestion: Question?
var currentQuestionPos = 0
var noCorrect = 0
var Corect = 0
var allowedToGoFurther = 0
//
//
//
//here starts the code about the first button action
@IBAction func firstOption(_ sender: Any) {
checkAnswer(idx: 0)
}
//here starts the code about the second button action
@IBAction func secondOption(_ sender: Any) {
checkAnswer(idx: 1)
}
//here starts the code about the third button action
@IBAction func thirdOption(_ sender: Any) {
checkAnswer(idx: 2)
}
func checkAnswer(idx: Int) {
if(idx == currentQuestion!.correctAnswer) {
print("corect")
noCorrect += 1
let gesture1 = UITapGestureRecognizer(target: self, action: #selector(EViewController.singleTap1(_:)))
firstOption.addGestureRecognizer(gesture1)
let gesture2 = UITapGestureRecognizer(target: self, action: #selector(EViewController.singleTap2(_:)))
secondOption.addGestureRecognizer(gesture2)
let gesture3 = UITapGestureRecognizer(target: self, action: #selector(EViewController.singleTap3(_:)))
thirdOption.addGestureRecognizer(gesture3)
}
}
@objc func singleTap1(_ recognizer: UIGestureRecognizer) {
print("am tastat1")
if (firstOption.currentTitle != currentQuestion!.corect) {
print("not true, i go further")
firstImage.image = UIImage(named: "false.png")
firstOption.isUserInteractionEnabled = false
secondOption.isUserInteractionEnabled = false
thirdOption.isUserInteractionEnabled = false
allowedToGoFurther = 1
self.nextB.isEnabled = true
} else {
firstImage.image = UIImage(named: "true.png")
firstOption.isUserInteractionEnabled = false
secondOption.isUserInteractionEnabled = false
thirdOption.isUserInteractionEnabled = false
allowedToGoFurther = 1
self.nextB.isEnabled = true
}
}
@objc func singleTap2(_ recognizer: UIGestureRecognizer) {
print("am tastat2")
if (secondOption.currentTitle != currentQuestion!.corect) {
print("second button. Not true, I go further")
secondImage.image = UIImage(named: "false.png")
secondOption.isUserInteractionEnabled = false
firstOption.isUserInteractionEnabled = false
thirdOption.isUserInteractionEnabled = false
allowedToGoFurther = 1
self.nextB.isEnabled = true
} else {
secondImage.image = UIImage(named: "true.png")
firstOption.isUserInteractionEnabled = false
secondOption.isUserInteractionEnabled = false
thirdOption.isUserInteractionEnabled = false
allowedToGoFurther = 1
self.nextB.isEnabled = true
}
}
@objc func singleTap3(_ recognizer: UIGestureRecognizer) {
print("am tastat3")
if (thirdOption.currentTitle != currentQuestion!.corect) {
print("third button. Not true, I go further")
thirdImage.image = UIImage(named: "false.png")
thirdOption.isUserInteractionEnabled = false
firstOption.isUserInteractionEnabled = false
secondOption.isUserInteractionEnabled = false
allowedToGoFurther = 1
self.nextB.isEnabled = true
} else {
thirdImage.image = UIImage(named: "true.png")
firstOption.isUserInteractionEnabled = false
secondOption.isUserInteractionEnabled = false
thirdOption.isUserInteractionEnabled = false
allowedToGoFurther = 1
self.nextB.isEnabled = true
}
}
func loadNextQuestion() {
if(currentQuestionPos + 1 < questions.count){
currentQuestionPos += 1
currentQuestion = questions[currentQuestionPos]
setQuestion()
firstOption.isUserInteractionEnabled = true
secondOption.isUserInteractionEnabled = true
thirdOption.isUserInteractionEnabled = true
allowedToGoFurther = 0
} else {
performSegue(withIdentifier: "easyRestart", sender: nil)
}
}
func setQuestion() {
leftImage.image = currentQuestion!.image
firstOption.setTitle(currentQuestion!.answers[0], for: .normal)
secondOption.setTitle(currentQuestion!.answers[1], for: .normal)
thirdOption.setTitle(currentQuestion!.answers[2], for: .normal)
self.nextB.isEnabled = false
}
var easy = 0
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if(segue.identifier == "easyRestart") {
let vc = segue.destination as! startOver
vc.easy = 1
vc.noCorrect = 0
vc.total = questions.count
}
}
}
所以，当我点击错误的答案时，即使我按了100次，该应用程序也什么都不做。
如果应用程序什么都不做，我会按正确答案。如果我再次按下它就说它没关系，我可以走得更远。 这只发生在第一个问题上。之后一切正常。
答案 0 :(得分：0)
这似乎是你在UIButton中添加一个手势识别器，而UIButton的默认手势会取消你要添加的手势，尝试使用：
button.addTarget(self, action: #selector(...), for: .touchUpInside)
在您的代码中
let gesture1 = UITapGestureRecognizer(target: self, action: #selector(EViewController.singleTap1(_:)))
firstOption.addGestureRecognizer(gesture1)
let gesture2 = UITapGestureRecognizer(target: self, action: #selector(EViewController.singleTap2(_:)))
secondOption.addGestureRecognizer(gesture2)
let gesture3 = UITapGestureRecognizer(target: self, action: #selector(EViewController.singleTap3(_:)))
thirdOption.addGestureRecognizer(gesture3)
与
firstOption.addTarget(self, action: #selector(singleTap1), for: .touchUpInside)
secondOption.addTarget(self, action: #selector(singleTap2), for: .touchUpInside)
thirdOption.addTarget(self, action: #selector(singleTap3), for: .touchUpInside)
并删除参数：
@objc func singleTap1()
@objc func singleTap2()
@objc func singleTap3()
但每次按下按钮都会添加目标。
我真的不知道你想要实现什么