我有一个我正在研究的iOS应用程序，我正在与Alamofire进行API调用，一切正常但我有一个问题我几天都无法解决，经过多次研究我无法得到有形的东西。所以我进行API调用并获取产品名称和图像和描述等...现在我使用SDWebImage将我的图像传递到表格视图，但图像可能大约为5但是对于着陆页我只需要索引1处的图像我能成功做到。我现在面临的问题是，当选择产品时，我将产品ID传递给变量，然后使用它来获取产品和其他属性的相应详细信息。
我能够完美地传递这些数据但是当涉及到传递图像时，我感到困惑，因为我想要一个像分页一样的分页来显示特定图像的所有图像。我能够实现pageview来获取硬编码图像的静态图像，其中涉及创建一个wi包含ImageView的uiviewcontroller，并将UIViewController以编程方式嵌入到网页视图中，如
lazy var controllers: [UIViewController] = {
let storyboard = UIStoryboard(name: "Main", bundle: nil)
var controllers = [UIViewController]()
if let images = self.images {
for image in images {
let shoeImageVC = storyboard.instantiateViewController(withIdentifier: "xxxxx")
controllers.append(imageVC)
}
}
self.pageViewControllerDelegate?.setupPageController(numberOfPages: controllers.count)
return controllers
}()
override func viewDidLoad() {
super.viewDidLoad()
automaticallyAdjustsScrollViewInsets = false
dataSource = self
delegate = self
self.turnToPage(index: 0)
}
func turnToPage(index: Int)
{
let controller = controllers[index]
var direction = UIPageViewControllerNavigationDirection.forward
if let currentVC = viewControllers?.first {
let currentIndex = controllers.index(of: currentVC)!
if currentIndex > index {
direction = .reverse
}
}
self.configureDisplaying(viewController: controller)
setViewControllers([controller], direction: direction, animated: true, completion: nil)
}
func configureDisplaying(viewController: UIViewController)
{
for (index, vc) in controllers.enumerated() {
if viewController === vc {
if let imageVC = viewController as? ImageViewController {
imageVC.image = self.images?[index]
self.pageViewControllerDelegate?.turnPageController(to: index)
}
}
}
}
}
extension ImagesPageViewController : UIPageViewControllerDataSource
{
func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController?
{
if let index = controllers.index(of: viewController) {
if index > 0 {
return controllers[index-1]
}
}
return controllers.last
}
func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController?
{
if let index = controllers.index(of: viewController) {
if index < controllers.count - 1 {
return controllers[index + 1]
}
}
return controllers.first
}
}
extension ImagesPageViewController : UIPageViewControllerDelegate
{
func pageViewController(_ pageViewController: UIPageViewController, willTransitionTo pendingViewControllers: [UIViewController])
{
self.configureDisplaying(viewController: pendingViewControllers.first as! ImageViewController)
}
func pageViewController(_ pageViewController: UIPageViewController, didFinishAnimating finished: Bool, previousViewControllers: [UIViewController], transitionCompleted completed: Bool)
{
if !completed {
self.configureDisplaying(viewController: previousViewControllers.first as! ImageViewController)
}
}
}
但是从API调用中获取它们并使用SDWebImages进行渲染非常具有挑战性。我将产品详细信息传递给tableview单元格，并希望在我嵌入tableview的同一视图控制器中嵌入的页面视图以显示详细信息。嵌入式网页浏览控制器用于显示特定选定产品的图像。这是我传递单个产品的代码
var selectedProduct : Products?
......
func findIndividualProducts(id: Int, completion: @escaping CompletionHandler) -> Void {
Alamofire.request("\(URL_PRODUCT_DETAIL)\(id)", method: .get, parameters: nil, encoding: JSONEncoding.default, headers: HEADER).responseJSON { (response) in
if response.result.error == nil {
do {
if let data = response.result.value {
let item = JSON(data)
let url = item["url"].stringValue
let id = item["id"].intValue
let title = item["title"].stringValue
let description = item["description"].stringValue
let recommendedProducts = item["recommended_products"].stringValue
let attributes = item["attributes"].arrayValue
let categories = item["categories"].arrayValue
let productClass = item["product_class"].stringValue
let imagesList = item["images"].arrayValue
let imagesURL = imagesList.map {$0["original"].stringValue}
let options = item["options"].stringValue
let children = item["children"].stringValue
let productDetail = ProductDetail(productUrl: url, id: id, productTitle: title, productDescription: description, recommendedProducts: recommendedProducts, attributes: attributes, categories: categories, productClass: productClass, productImg: imagesURL, options: options, children: children)
self.productDetails.append(productDetail)
completion(true)
}
} catch {
}
} else {
}
}
}
将所选产品详细信息传递到tableview单元格
func configureCell() -> Void {
guard let productId = ProductServices.instance.selectedProduct?.id else {return}
ProductServices.instance.findIndividualProducts(id: productId) { (success) in
if success {
ProductServices.instance.productDetails.forEach({ (productDetail) in
self.productTitle.text = productDetail.productTitle
self.productDescription.text = productDetail.productDescription
let htmlString = self.productDescription.text
let data = htmlString?.data(using: String.Encoding.unicode)! // mind "!"
let attrStr = try? NSAttributedString( // do catch
data: data!,
options: [NSAttributedString.DocumentReadingOptionKey.documentType: NSAttributedString.DocumentType.html],
documentAttributes: nil)
self.productDescription.attributedText = attrStr
})
print(ProductServices.instance.productDetails)
}
}
}
ProductDetails模型
struct ProductDetail {
public private(set) var productUrl : String!
public private(set) var id : Int!
public private(set) var productTitle : String!
public private(set) var productDescription : String!
public private(set) var recommendedProducts : String!
public private(set) var attributes : Array<Any>!
public private(set) var categories : Array<Any>!
public private(set) var productClass : String!
public private(set) var productImg : [String?]
public private(set) var options : String!
public private(set) var children : String!
}
可根据要求提供更多代码。谢谢提前