我使用此代码在两个类之间传递数据。我想通过
indexpageIndeximagesArraySampleViewController pageIndexconfigure(theData: PageData)示例视图控制器：
class SampleViewController: UIViewController {
var pagesData = [PageData]()
var index = Int()
var pageIndex: Int = -1
var imageArray: [UIImage] = []
let detailViewController = ModelView()
let pageContainer: UIView = {
let view = UIView()
view.translatesAutoresizingMaskIntoConstraints = false
return view
}()
let pageViews: [ModelView] = {
let view = [ModelView(), ModelView()]
view[0].translatesAutoresizingMaskIntoConstraints = false
view[1].translatesAutoresizingMaskIntoConstraints = false
return view
}()
override func viewDidLoad() {
super.viewDidLoad()
loadImages()
pageContainer.addSubview(pageViews[0])
pageContainer.addSubview(pageViews[1])
view.addSubview(pageContainer)
transitionAnimation(animated: false, direction: "fromRight")
}
func setupViews() {
pageContainer.addSubview(pageViews[0])
pageContainer.addSubview(pageViews[1])
view.addSubview(pageContainer)
}
func loadData(fileName: Any) -> PagesData {
var url = NSURL()
switch index {
case 0:
url = Bundle.main.url(forResource: "\(index)", withExtension: "json")! as NSURL
case _:
let fileManager = FileManager.default
let urls = fileManager.urls(for: .documentDirectory, in: .userDomainMask)
let documentDirectoryURL: NSURL = (urls.first as NSURL?)!
url = documentDirectoryURL.appendingPathComponent("/\(index)/text.json")! as NSURL
}
let data = try! Data(contentsOf: url as URL)
let person = try! JSONDecoder().decode(PagesData.self, from: data)
return person
}
func loadImages() {
var images = [UIImage]()
switch index {
case 0:
for imageIndex in 1...18 { images.append(UIImage(named: "\(imageIndex).jpg")!) }
case _:
let filemanager = FileManager.default
let filesURL = URL.documentsDirectory.appendingPathComponent("\(index)")
let numberOfJPGs = filemanager.enumerator(at: filesURL, includingPropertiesForKeys: nil)?
.filter { ($0 as? URL)?.pathExtension.caseInsensitiveCompare("jpg") == .orderedSame }
.count
for myIndex in 0...numberOfJPGs! {
let nsDocumentDirectory = FileManager.SearchPathDirectory.documentDirectory
let nsUserDomainMask = FileManager.SearchPathDomainMask.userDomainMask
let paths = NSSearchPathForDirectoriesInDomains(nsDocumentDirectory, nsUserDomainMask, true)
let dirPath = paths.first
let imageURL = URL(fileURLWithPath: dirPath!).appendingPathComponent("\(index)/images/\(myIndex).jpg")
if let image = UIImage(contentsOfFile: imageURL.path) { imageArray.append(image) }
detailViewController.index = index
detailViewController.imageArray = imageArray
}
}
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches {
let location = touch.location(in: view.self)
if (location.x > self.view.frame.size.width - (view.safeAreaInsets.left * 1.5)) {
transitionAnimation(animated: true, direction: "fromRight")
} else if (location.x < (view.safeAreaInsets.left * 1.5)) {
transitionAnimation(animated: true, direction: "fromLeft")
}
}
}
func transitionAnimation(animated: Bool, direction: String) {
let result = loadData(fileName: pagesData)
switch direction {
case "fromRight":
pageIndex += 1
case "fromLeft":
pageIndex -= 1
default: break
}
if pageIndex <= -1 {
pageIndex = 0
} else if pageIndex >= result.pagesData.count {
pageIndex = result.pagesData.count - 1
} else {
let fromView = pageViews[0].isHidden ? pageViews[1] : pageViews[0]
let toView = pageViews[0].isHidden ? pageViews[0] : pageViews[1]
toView.configure(theData: result.pagesData[pageIndex])
if animated {
toView.isHidden = false
UIView.animate(withDuration: 1.0, animations: {
let animation = CATransition()
animation.duration = 1.0
animation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
animation.isRemovedOnCompletion = true
animation.subtype = direction
let tapAnimationType = "fade"
switch tapAnimationType {
case "pageCurl": animation.type = "pageCurl"
case "fade": animation.type = "fade"
case "moveIn": animation.type = "moveIn"
case "push": animation.type = "push"
case "reveal": animation.type = "reveal"
default: animation.type = "fade" }
self.pageContainer.layer.add(animation, forKey: "pageAnimation")
self.pageContainer.bringSubview(toFront: toView)
})
} else {
fromView.isHidden = true
toView.isHidden = false
}
}
}
detailViewController.pageIndex = pageIndex
}
模型视图：
class ModelView: UIView {
var textPosition = ""
let textLabel = UILabel()
let imageView = UIImageView()
var index = Int()
var pageIndex = Int()
var imageArray: [UIImage] = []
override init(frame: CGRect) {
super.init(frame: frame)
commonInit()
}
required init?(coder: NSCoder) {
super.init(coder: coder)
commonInit()
}
func commonInit() {
setupViews()
}
func setupViews() {
addSubview(imageView)
addSubview(textLabel)
}
func configure(theData: PageData) {
textLabel.text = theData.textData
textPosition = theData.textPosition
textLabel.textColor = UIColor(theData.textColor)
textLabel.layer.shadowColor = UIColor(theData.shadowColor).cgColor
imageView.image = imageArray[pageIndex]
}
但是在 ModelView 中我的图像数组是空的。但是
indexpageIndeximageView.image = imageArray[pageIndex]如何解决？
加载图像完成后，需要为每个ModelView分配imageArray。
func loadImages() {
var images = [UIImage]()
switch index {
case 0:
for imageIndex in 1...18 { images.append(UIImage(named: "\(imageIndex).jpg")!) }
case _:
let filemanager = FileManager.default
let filesURL = URL.documentsDirectory.appendingPathComponent("\(index)")
let numberOfJPGs = filemanager.enumerator(at: filesURL, includingPropertiesForKeys: nil)?
.filter { ($0 as? URL)?.pathExtension.caseInsensitiveCompare("jpg") == .orderedSame }
.count
for myIndex in 0...numberOfJPGs! {
let nsDocumentDirectory = FileManager.SearchPathDirectory.documentDirectory
let nsUserDomainMask = FileManager.SearchPathDomainMask.userDomainMask
let paths = NSSearchPathForDirectoriesInDomains(nsDocumentDirectory, nsUserDomainMask, true)
let dirPath = paths.first
let imageURL = URL(fileURLWithPath: dirPath!).appendingPathComponent("\(index)/images/\(myIndex).jpg")
if let image = UIImage(contentsOfFile: imageURL.path) { images.append(image) }
detailViewController.index = index
detailViewController.imageArray = images
}
}
// Set imageArray here
pageViews.forEach { view in
$0.imageArray = images
}
}