UIcollectionView单元格应该如何使用indexPath委托的SelectItemAt？
我尝试过：
import UIKit
class ViewController: UIViewController {
var allQuestions = QuestionBank()
//for correct answer
var answerString: String = " "
var answerDict:[Int:String] = [1:"One", 2:"Two", 3:"Three"]
var someSet = Array<Character>()
// var arrCharacters = [Array<Character>]()
//for hints alphabet
var randomDict = [Int:String]()
var keepingCurrent:[Int:String] = [1:"One", 2:"Two", 3:"Three"]
//for user pressed answertag
var userAnswerString: String = " "
var pressedTagDict:[Int:String] = [1:"One", 2:"Two", 3:"Three"]
@IBOutlet weak var firstImageView: UIImageView!
@IBOutlet weak var secondImageView: UIImageView!
@IBOutlet weak var thirdImageView: UIImageView!
@IBOutlet weak var fourthImageView: UIImageView!
@IBOutlet weak var answerCollectionView: UICollectionView!
@IBOutlet weak var hintsCollectionView: UICollectionView!
@IBAction func userPressedAction(_ sender: UIButton) {
print("hello\(sender.tag)")
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
let firstQuestion = allQuestions.list[0]
firstImageView?.image = firstQuestion.questionImage[0]
secondImageView?.image = firstQuestion.questionImage[1]
thirdImageView?.image = firstQuestion.questionImage[2]
fourthImageView?.image = firstQuestion.questionImage[3]
answerCollectionView?.delegate = self
answerCollectionView?.dataSource = self
hintsCollectionView?.delegate = self
hintsCollectionView?.dataSource = self
answerString = firstQuestion.answerText
let characters = Array(answerString)
for i in 0..<(answerString.count) {
someSet.append(characters[i])
answerDict.updateValue(String(characters[i]), forKey: i)
}
func randomAlphaNumericString(length: Int) -> String {
let allowedChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
let allowedCharsCount = UInt32(allowedChars.count)
var randomString = ""
for _ in 0..<length {
let randomNum = Int(arc4random_uniform(allowedCharsCount))
let randomIndex = allowedChars.index(allowedChars.startIndex, offsetBy: randomNum)
let newCharacter = allowedChars[randomIndex]
randomString += String(newCharacter)
randomString = randomString.uppercased()
}
return randomString
}
//for length counter
var randomAlphabet = randomAlphaNumericString(length: 16 - answerString.count)
//hints label alphabet
randomAlphabet += answerString
var randomcharacters = Array(randomAlphabet)
print(randomcharacters)
var indexArray = Array(randomcharacters.indices)
var index = indexArray.endIndex
//randomize the string
let indexIterator: AnyIterator<Int> = AnyIterator {
guard let nextIndex = indexArray.index(index, offsetBy: -1, limitedBy: indexArray.startIndex)
else { return nil }
index = nextIndex
let randomIndex = Int(arc4random_uniform(UInt32(index)))
if randomIndex != index {
indexArray.swapAt(randomIndex, index)
}
return indexArray[index]
}
let newRandomArray = indexIterator.map { randomcharacters[$0] }
//print(newArray)
for i in 0..<(newRandomArray.count) {
// someSet.append(characters[i])
randomDict.updateValue(String(newRandomArray[i]), forKey: i)
}
print(randomDict)
}
}
//answer collectionView
// MARK: CollectionView DataSource
extension ViewController: UICollectionViewDataSource {
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
if collectionView == self.answerCollectionView {
return answerString.count
} else {
return 16
}
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
if collectionView == self.answerCollectionView {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! answerCell
cell.answerButton.setTitle(answerDict[indexPath.row], for: .normal)
cell.answerButton.setBackgroundImage(UIImage(named: "letter"), for: .normal)
return cell
} else {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "HINTS", for: indexPath) as! hintsCell
cell.hintsButton.setTitle(randomDict[indexPath.row], for: .normal)
cell.hintsButton.setBackgroundImage(UIImage(named: "letter"), for: .normal)
cell.isSelected = true
hintsCollectionView.selectItem(at: indexPath, animated: true, scrollPosition: [])
return cell
}
}
}
// MARK: CollectionView Delegate
extension ViewController: UICollectionViewDelegate {
func collectionView(_ collectionView: UICollectionView, shouldSelectItemAt indexPath: IndexPath) {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "HINTS", for: indexPath) as! hintsCell
print("hello")
}
}