我在我的应用程序中使用RatingControl类(在gitHub上找到)来记录4个条件(实例)的反馈。我必须分别从viewController中捕获每个实例中点击的星数。如何捕获捕获从viewController单击的星数,并区分已单击的实例。我相信我必须使用RatingControl类中的ratingButtonTapped函数,但不知道如何实现这一点。
下面的ViewController代码片段:
class DetailsViewController: UIViewController {
@IBOutlet weak var ratingControl1: RatingControl!
@IBOutlet weak var ratingControl2: RatingControl!
@IBOutlet weak var ratingControl3: RatingControl!
@IBOutlet weak var ratingControl4: RatingControl!
//I want to use some code within ViewController to capture the #stars clicked
下面的RatingControl类:
@IBDesignable class RatingControl: UIStackView {
//MARK: Properties
private var ratingButtons = [UIButton]()
var rating = 0 {
didSet {
updateButtonSelectionStates()
}
}
@IBInspectable var starSize: CGSize = CGSize(width: 44.0, height: 44.0) {
didSet {
setupButtons()
}
}
@IBInspectable var starCount: Int = 5 {
didSet {
setupButtons()
}
}
//MARK: Initialization
override init(frame: CGRect) {
super.init(frame: frame)
setupButtons()
}
required init(coder: NSCoder) {
super.init(coder: coder)
setupButtons()
}
//MARK: Button Action
func ratingButtonTapped(button: UIButton) {
guard let index = ratingButtons.index(of: button) else {
fatalError("The button, \(button), is not in the ratingButtons array: \(ratingButtons)")
}
// Calculate the rating of the selected button
let selectedRating = index + 1
if selectedRating == rating {
// If the selected star represents the current rating, reset the rating to 0.
rating = 0
} else {
// Otherwise set the rating to the selected star
rating = selectedRating
}
print(selectedRating)
}
//MARK: Private Methods
private func setupButtons() {
// Clear any existing buttons
for button in ratingButtons {
removeArrangedSubview(button)
button.removeFromSuperview()
}
ratingButtons.removeAll()
// Load Button Images
let bundle = Bundle(for: type(of: self))
let filledStar = UIImage(named: "filledStar", in: bundle, compatibleWith: self.traitCollection)
let emptyStar = UIImage(named:"emptyStar", in: bundle, compatibleWith: self.traitCollection)
let highlightedStar = UIImage(named:"highlightedStar", in: bundle, compatibleWith: self.traitCollection)
for index in 0..<starCount {
// Create the button
let button = UIButton()
// Set the button images
button.setImage(emptyStar, for: .normal)
button.setImage(filledStar, for: .selected)
button.setImage(highlightedStar, for: .highlighted)
button.setImage(highlightedStar, for: [.highlighted, .selected])
// Add constraints
button.translatesAutoresizingMaskIntoConstraints = false
button.heightAnchor.constraint(equalToConstant: starSize.height).isActive = true
button.widthAnchor.constraint(equalToConstant: starSize.width).isActive = true
// Set the accessibility label
button.accessibilityLabel = "Set \(index + 1) star rating"
// Setup the button action
button.addTarget(self, action: #selector(RatingControl.ratingButtonTapped(button:)), for: .touchUpInside)
// Add the button to the stack
addArrangedSubview(button)
// Add the new button to the rating button array
ratingButtons.append(button)
}
updateButtonSelectionStates()
}
private func updateButtonSelectionStates() {
for (index, button) in ratingButtons.enumerated() {
// If the index of a button is less than the rating, that button should be selected.
button.isSelected = index < rating
// Set accessibility hint and value
let hintString: String?
if rating == index + 1 {
hintString = "Tap to reset the rating to zero."
} else {
hintString = nil
}
let valueString: String
switch (rating) {
case 0:
valueString = "No rating set."
case 1:
valueString = "1 star set."
default:
valueString = "\(rating) stars set."
}
button.accessibilityHint = hintString
button.accessibilityValue = valueString
}
}
}
答案 0 :(得分:1)
也许您应该创建协议RatingControlDelegate
:
@objc protocol RatingControlDelegate: NSObjectProtocol {
@objc optional func ratingButtonTapped(_ ratingControl: RatingControl)
}
然后在delegate
中添加RatingControl
var:
var delegate: RatingControlDelegate?
然后在ratingButtonTapped(:_)
:
func ratingButtonTapped(button: UIButton) {
// ... end of func
delegate?.ratingButtonTapped?(self)
}
DetailsViewController
viewDidLoad(:_)
:
ratingControl1.delegate = self
ratingControl2.delegate = self
ratingControl3.delegate = self
ratingControl4.delegate = self
在RatingControlDelegate
的{{1}}实施中,您将DetailsViewController
变量:
ratingControl.rating
答案 1 :(得分:1)
我使用HCSStarRatingView在我的项目中显示星级率 您可以查看以下链接。
它为我提供星级价值 (例如viwFeedBackStar.value)
https://github.com/hsousa/HCSStarRatingView
我知道根据你的实现它是不同的库,但它确实有效
在ios中获取明星评分
答案 2 :(得分:1)
无需对代码进行任何更改。只需使用.rating属性访问当前评级值。
因此,在ViewController类中,当您需要访问评级值时,只需编写
print(ratingControl1.rating)
print(ratingControl2.rating)
但如果您需要在用户点击任何评级控件时访问评级值,请使用Aleksandr Zarubin回答来修改您的代码。
答案 3 :(得分:0)
你应该使用苹果推荐的评级视图控制器&#34; SKStoreReviewController&#34;来自StoreKit
https://developer.apple.com/documentation/storekit/skstorereviewcontroller