我需要下载我创建的带有参数的alamofire发布请求的图像，我对此没有任何问题。之后，我需要从生成的Json响应中下载图像url，我不知道如何从json下载图像url并将其保存在数组中，之后必须从url下载图像并将其绑定到图像中collectionView的视图。我不知道如何从json响应中获取图片网址，然后将其保存在数组中，然后必须下载图片，将其绑定在collectionView中。请帮我
我已经为我的帖子请求更新了json响应。请给我一个解决方案。我可以在控制台中获得以下响应。
( {
ActualPrice = 0;
AssuredTitle = "<null>";
CashBackAmount = 0;
CashBackDiscountPercentage = 0;
Code = "";
Cost = "<null>";
CreateDate = "<null>";
CustomSize = 0;
Delivery = "<null>";
DeliveryDate = "<null>";
DeliveryDays = "<null>";
Designer = "<null>";
Discount = "<null>";
DiscountCost = "<null>";
DispatchDateDisplay = "<null>";
Exclusive = "<null>";
Gender = "<null>";
HasReadyMadeColor = 0;
HasReadyMadeSizes = 0;
ID = 41;
ImageUrl = "https://images.cbazaar.com/images/aqua-blue-georgette-abaya-isbs1805991-u.jpg";
Is7DD = "<null>";
IsCustomizable = 0;
IsExclusive = 0;
IsFree = "<null>";
IsFreeShipping = 0;
IsInWishlist = 0;
IsLookUp = 0;
IsNew = 0;
IsProductAnimation = 0;
IsReadyToShip = 0;
LargeImageUrl = "<null>";
ListingImage = "<null>";
LowerLargeImage = "<null>";
LowerThumbImage = "<null>";
MoneyFactor = "<null>";
MoneyOffFactor = "<null>";
Name = "Islamic wear";
OfferImageUrl = "<null>";
OldPrice = 0;
OutOfStock = 0;
PDUrl = "<null>";
ProductBigLink = "<null>";
ProductCollectionReference = "<null>";
ProductHisImage = "<null>";
ProductSaleCycle = 0;
ProductType = 168;
ProductV2VRatio = 0;
PromotionTypeID = "<null>";
Promotions = "<null>";
PromotionsIcon = "<null>";
Rating = "<null>";
SalePrice = "<null>";
ShowOldPrice = 0;
SizeChart = "<null>";
SuperClassification = "<null>";
TypeGroup = "<null>";
TypeShortCode = "<null>";
UpperLargeImage = "<null>";
UpperThumbImage = "<null>";
VendorType = "<null>";
VisitCount = 0;
})
完整的ViewController文件
import UIKit
import Alamofire
import AlamofireImage
class EthnoVogueDesignConsultationViewController: UIViewController, UIScrollViewDelegate, UICollectionViewDelegate, UICollectionViewDataSource {
@IBOutlet weak var header_scrollView: UIScrollView!
@IBOutlet weak var pagecontroller: UIPageControl!
@IBOutlet weak var step_label: UILabel!
@IBOutlet weak var segmented_View: UIView!
@IBOutlet weak var segmented_Control: UISegmentedControl!
@IBOutlet weak var stylistView: UIView!
@IBOutlet weak var categorycollectionview: UICollectionView!
@IBOutlet weak var pagecontrollerview: UIView!
let image_array = ["slider1","slider2","slider1","slider2"]
let name_label = ["Salwar kameez","saree", "Anarkali", "Leghenga"]
static var deepLinkingFlag:Int = 0
static var deepLinkingFlagAfterKilling:Int = 0
var httpObj = HTTPHelper()
var apiRequestParameters:NSMutableDictionary = NSMutableDictionary()
var dictResult: NSDictionary = NSDictionary()
// var imageCache = [String:UIImage]()
//Array of images from the URL
var imageArray = [String]()
override func viewDidLoad() {
super.viewDidLoad()
globalConstants.deepLinkingFlagAfterKilling = 0
globalConstants.deepLinkingFlag = 0
apiclass()
// imagedownload()
//View which holds the stylist Name
stylistView.backgroundColor = UIColor(red: 235/255, green: 232/255, blue: 232/255, alpha: 1)
pagecontrollerview.backgroundColor = UIColor(red: 235/255, green: 232/255, blue: 232/255, alpha: 1)
//Label with holds the step 1
step_label.layer.borderWidth = 2
step_label.layer.borderColor = UIColor(red: 249/255, green: 8/255, blue: 129/255, alpha: 1).cgColor
stylistView.layer.shadowOffset = CGSize(width: 1, height: 1)
step_label.layer.shadowOpacity = 4
step_label.layer.shadowColor = UIColor(red: 249/255, green: 8/255, blue: 129/255, alpha: 1).cgColor
//Customising the segmented control with background color and tint color, font size
segmented_Control.tintColor = UIColor(red: 249/255, green: 8/255, blue: 129/255, alpha: 1)
segmented_Control.backgroundColor = UIColor.white
segmented_Control.layer.cornerRadius = 20
// let font = UIFont.systemFont(ofSize: 20)
let font = UIFont.boldSystemFont(ofSize: 20)
segmented_Control.setTitleTextAttributes([NSAttributedStringKey.font: font],
for: .normal)
let cellSize = CGSize(width:250 , height:400)
let layout = UICollectionViewFlowLayout()
layout.scrollDirection = .horizontal
layout.itemSize = cellSize
layout.sectionInset = UIEdgeInsets(top: 1, left: 1, bottom: 1, right: 1)
layout.minimumLineSpacing = 10.0
layout.minimumInteritemSpacing = 10.0
categorycollectionview.setCollectionViewLayout(layout, animated: true)
categorycollectionview.setCollectionViewLayout(layout, animated: false)
categorycollectionview.delegate = self
categorycollectionview.dataSource = self
// Do any additional setup after loading the view, typically from a nib.
self.header_scrollView.frame = CGRect(x:0, y:0, width:self.view.frame.width, height:225)
let scrollViewWidth:CGFloat = self.header_scrollView.frame.width
let scrollViewHeight:CGFloat = self.header_scrollView.frame.height
header_scrollView.backgroundColor = UIColor.black
//set image to the particular image in uiscrollview
let imgOne = UIImageView(frame: CGRect(x:0, y:0,width:scrollViewWidth, height:scrollViewHeight))
imgOne.image = UIImage(named: "slider2")
let imgTwo = UIImageView(frame: CGRect(x:scrollViewWidth, y:0,width:scrollViewWidth, height:scrollViewHeight))
imgTwo.image = UIImage(named: "slider1")
//Adding subview for the scrollview
self.header_scrollView.addSubview(imgOne)
self.header_scrollView.addSubview(imgTwo)
//setting size of the content view
self.header_scrollView.contentSize = CGSize(width:self.header_scrollView.frame.width * 4, height:self.header_scrollView.frame.height)
//header scroll view delegate selection
self.header_scrollView.delegate = self
self.pagecontroller.currentPage = 0
// time interval to move the slide show
Timer.scheduledTimer(timeInterval: 3, target: self, selector: #selector(moveToNextPage), userInfo: nil, repeats: true)
//step label for rounded corners
step_label.layer.masksToBounds = true
step_label.layer.cornerRadius = 15.0
NotificationCenter.default.addObserver(self, selector: #selector(EthnoVogueDesignConsultationViewController.deepLinking(_:)), name:NSNotification.Name(rawValue: "deepLinking"), object: nil)
}
@objc func deepLinking(_ notification:Notification){
print("its here")
// globalConstants.isSortCleared = 0
if(globalConstants.deepLinkingFlag == 1){
self.tabBarController?.selectedIndex = 0
// let viewController = self.storyboard?.instantiateViewController(withIdentifier:"catalog") as? CatalogController
// self.navigationController?.pushViewController(viewController!, animated: false)
}
else if(globalConstants.deepLinkingFlag == 2){
self.tabBarController?.selectedIndex = 0
// let viewController = self.storyboard?.instantiateViewController(withIdentifier:"productDetails") as? ProductDetailViewController
// self.navigationController?.pushViewController(viewController!, animated: false)
}
else if(globalConstants.deepLinkingFlag == 3){
self.tabBarController?.selectedIndex = 0
// let viewController = self.storyboard?.instantiateViewController(withIdentifier:"ols") as? OLSViewController
// self.navigationController?.pushViewController(viewController!, animated: false)
}
else if(globalConstants.deepLinkingFlag == 4){
self.tabBarController?.selectedIndex = 0
// let viewController = self.storyboard?.instantiateViewController(withIdentifier:"home") as? HomeController
// self.navigationController?.pushViewController(viewController!, animated: false)
}
else if(globalConstants.deepLinkingFlag == 5){
//self.navigationController?.popToRootViewControllerAnimated(false)
self.tabBarController?.selectedIndex = 1
}
else if(globalConstants.deepLinkingFlag == 6){
//self.navigationController?.popToRootViewControllerAnimated(false)
self.tabBarController?.selectedIndex = 2
}
else if(globalConstants.deepLinkingFlag == 7){
//self.navigationController?.popToRootViewControllerAnimated(false)
self.tabBarController?.selectedIndex = 0
}
}
// move to next image image view in file
@objc func moveToNextPage (){
let pageWidth:CGFloat = self.header_scrollView.frame.width
let maxWidth:CGFloat = pageWidth * 2
let contentOffset:CGFloat = self.header_scrollView.contentOffset.x
var slideToX = contentOffset + pageWidth
if contentOffset + pageWidth == maxWidth
{
slideToX = 0
}
self.header_scrollView.scrollRectToVisible(CGRect(x:slideToX, y:0, width:pageWidth, height:self.header_scrollView.frame.height), animated: true)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
//scrollView Method for chaning the page control while swiping the image
func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
let pagenumber = scrollView.contentOffset.x / scrollView.frame.size.width
pagecontroller.currentPage = Int(pagenumber)
}
//CollectionView for Categories image
func numberOfSections(in collectionView: UICollectionView) -> Int {
return 1
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
switch segmented_Control.selectedSegmentIndex {
case 0:
return imageArray.count
case 1:
return 10
default:
break
}
return 0
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let Cell = collectionView.dequeueReusableCell(withReuseIdentifier: "imagecell", for: indexPath) as! CategorySegmentCollectionViewCell
let url = NSURL(string: self.imageArray[indexPath.item])!
Cell.category_image.af_setImage(withURL: url as URL, placeholderImage: UIImage(named: "noimage.png"), filter: nil, imageTransition: .noTransition, runImageTransitionIfCached: true, completion: nil)
switch segmented_Control.selectedSegmentIndex{
case 0:
// let img : UIImage = UIImage(named:"pink")!
//
// Cell.category_image.image = img
// Cell.category_name_label.text = name_label[indexPath.item]
break
case 1:
// let img : UIImage = UIImage(named:"dark")!
// Cell.category_image.image = img
// Cell.category_name_label.text = "condition"
break
default:
break
}
//let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "brandCell", for: indexPath) as! BrandCollectionViewCell
// use this to download images
return Cell
}
func collectionView(_ collectionView: UICollectionView, didHighlightItemAt indexPath: IndexPath) {
UIView.animate(withDuration: 0.5) {
if let cell = collectionView.cellForItem(at: indexPath) as? CategorySegmentCollectionViewCell {
cell.category_image.transform = .init(scaleX: 0.95, y: 0.95)
cell.contentView.backgroundColor = UIColor(red: 0.95, green: 0.95, blue: 0.95, alpha: 1)
}
}
}
func collectionView(_ collectionView: UICollectionView, didUnhighlightItemAt indexPath: IndexPath) {
UIView.animate(withDuration: 0.5) {
if let cell = collectionView.cellForItem(at: indexPath) as? CategorySegmentCollectionViewCell {
cell.category_image.transform = .identity
cell.contentView.backgroundColor = .clear
}
}
}
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
switch segmented_Control.selectedSegmentIndex{
case 0:
if (collectionView.cellForItem(at: indexPath) as? CategorySegmentCollectionViewCell) != nil {
self.segmented_Control.setEnabled(true, forSegmentAt: 1)
segmented_Control.selectedSegmentIndex = 1
collectionView.reloadData()
//print(cell)
}
break
case 1:
if (collectionView.cellForItem(at: indexPath) as? CategorySegmentCollectionViewCell) != nil {
self.segmented_Control.setEnabled(true, forSegmentAt: 2)
let categoryTaskVC = storyboard?.instantiateViewController(withIdentifier: "fabrics") as! FabricsViewController
self.navigationController?.pushViewController(categoryTaskVC, animated: true)
}
break
default:
break
}
}
override func viewWillAppear(_ animated: Bool) {
if(segmented_Control.selectedSegmentIndex == 0){
self.segmented_Control.setEnabled(false, forSegmentAt: 1)
self.segmented_Control.setEnabled(false, forSegmentAt: 2)
}
}
@IBAction func segmented_tapped_action(_ sender: Any) {
categorycollectionview.reloadData()
}
func apiclass(){
if(globalConstants.prefs.value(forKey: "authToken") == nil){
self.httpObj.getAuthToken()
}
else if(globalConstants.prefs.value(forKey: "authExpireDate") != nil && Date().compare((globalConstants.prefs.value(forKey: "authExpireDate") as? Date)!) == ComparisonResult.orderedDescending){
globalConstants.prefs.setValue(nil, forKey: "authToken")
self.httpObj.getAuthToken()
}
DispatchQueue.main.async(execute: {
if(globalConstants.prefs.value(forKey: "authToken") != nil){
var request:NSMutableURLRequest = NSMutableURLRequest(url: globalConstants.tokenUrl as URL)
let authToken:String = (globalConstants.prefs.value(forKey: "authToken") as? String)!
request = NSMutableURLRequest(url: globalConstants.tokenUrl as URL)
request.addValue("Bearer \(authToken)", forHTTPHeaderField: "Authorization")
request.addValue(UIDevice.current.identifierForVendor!.uuidString, forHTTPHeaderField: "X-Device-ID")
request.addValue((globalConstants.prefs.value(forKey: "UUID") as? String)!, forHTTPHeaderField: "X-Unique-ID")
request.addValue((globalConstants.prefs.value(forKey: "countryCode") as? String)!, forHTTPHeaderField: "X-Country-Code")
request.addValue((globalConstants.prefs.value(forKey: "currencyCode") as? String)!, forHTTPHeaderField: "X-Currency-Code")
request.addValue((globalConstants.prefs.value(forKey: "currencySymbol") as? String)!, forHTTPHeaderField: "X-Currency-Symbol")
request.addValue(String(stringInterpolationSegment: (globalConstants.prefs.value(forKey: "currencyFactor"))!), forHTTPHeaderField: "X-Currency-Factor")
request.addValue((globalConstants.prefs.value(forKey: "appSource") as? String)!, forHTTPHeaderField: "X-App-Source")
request.addValue(globalConstants.appVersion, forHTTPHeaderField: "X-App-Version")
request.addValue(String(stringInterpolationSegment: (globalConstants.prefs.value(forKey: "estoreId") as? Int)!), forHTTPHeaderField: "X-EStore-ID")
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
if(globalConstants.prefs.value(forKey: "userEmail") != nil){
request.addValue((globalConstants.prefs.value(forKey: "userEmail") as? String)!, forHTTPHeaderField: "X-Email")
}
if(globalConstants.prefs.value(forKey: "userId") != nil){
request.addValue(String(stringInterpolationSegment: (globalConstants.prefs.value(forKey: "userId"))!), forHTTPHeaderField: "X-User-ID")
}
print(self.apiRequestParameters)
var requestParameters:NSMutableDictionary = NSMutableDictionary()
requestParameters = [
"mode" : "design",
"productGroup" : 0
]
print(requestParameters)
request.url = globalConstants.ESDCUrl as URL
self.httpObj.sendRequest("POST", requestDict: requestParameters, request: request as URLRequest, completion: { (result, error) in
print(result!)
if(error == nil){
guard let json = result as! [[String:Any]]? else{
return
}
print("Response \(json)")
for images in json
{
if let ImageUrl = images["ImageUrl"] as? String
{
self.imageArray.append(ImageUrl)
}
DispatchQueue.main.async {
self.categorycollectionview.reloadData()
}
}
// self.dictResult = result as! NSDictionary
// self.categorycollectionview.reloadData()
//self.collectionView.reloadData()
// let requestDataDict:NSDictionary = incomingRequetArray[0] as! NSDictionary
// let newDict: NSURL = requestDataDict.object(forKey: "ImageUrl") as? NSDictionary
//
}
else{
let alert = UIAlertView()
alert.isHidden = true
alert.addButton(withTitle: "OK")
alert.message = globalConstants.apiErrorMessage
alert.show()
}
})
}
})
}
//typealaising the headerscrollview to the view controller
private typealias Header_scrollView = EthnoVogueDesignConsultationViewController
// extending the header_scrollview
extension Header_scrollView
{
func scrollViewDidEndScrollingAnimation(_ scrollView: UIScrollView){
// Test the offset and calculate the current page after scrolling ends
let pageWidth:CGFloat = scrollView.frame.width
let currentPage:CGFloat = floor((scrollView.contentOffset.x-pageWidth/2)/pageWidth)+1
// Change the indicator
self.pagecontroller.currentPage = Int(currentPage);
UIView.animate(withDuration: 1.0, animations: { () -> Void in
// self.startButton.alpha = 1.0
})
}
}