我想在iCarousel SlideShow上的网站上显示一些图片。
我从iCarousel获得了空幻灯片。
我是初学者并且在我的应用程序上偶然尝试了很多代码但是注意到了
这是我的完整代码：
import UIKit
class ViewController: UIViewController , iCarouselDataSource, iCarouselDelegate {
@IBOutlet weak var imageView: UIImageView!
@IBOutlet weak var allimages: UIImageView!
internal var urll:NSURL!
@IBOutlet weak var carouselView: iCarousel!
var numbers = [Int]()
var urls = [String]()
func carousel(carousel: iCarousel, viewForItemAtIndex index: Int, reusingView view: UIView?) -> UIView {
let tempView = UIView(frame: CGRect(x: 0, y: 0, width: 300, height: 200))
let images = UIButton(frame: CGRect(x: 0, y: 0, width: 300, height: 200))
images.backgroundColor = UIColor.blueColor()
images.backgroundImageForState(.Normal)
images.backgroundRectForBounds(CGRect(x: 0, y: 0, width: 300, height: 200))
tempView.addSubview(images)
let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 200, height: 200))
imageView.backgroundColor = UIColor.orangeColor()
for item in self.urls {
print (item)
let s = item
let url = NSURL(string: s)
let session = NSURLSession.sharedSession()
let task = session.downloadTaskWithURL(url!)
{
(url: NSURL?, res: NSURLResponse?, e: NSError?) in
let d = NSData(contentsOfURL: url!)
let image = UIImage(data: d!)
dispatch_async(dispatch_get_main_queue()) {
imageView.image = image
}
}
task.resume()
}
return images
}
func carousel(carousel: iCarousel, valueForOption option: iCarouselOption, withDefault value: CGFloat) -> CGFloat {
if option == iCarouselOption.Spacing {
return value * 1.1
}
return value
}
override func awakeFromNib() {
super.awakeFromNib()
numbers = [1,2,3,4]
}
func numberOfItemsInCarousel(carousel: iCarousel) -> Int {
return numbers.count
}
//==============================================================
override func viewDidLoad() {
carouselView.type = .Rotary
carouselView.autoscroll = 0.4
// let defaults = NSUserDefaults.standardUserDefaults()
urll = NSURL(string: "http://xxxxxxxxx.com/api/?slider=uij6sdnb")
let session = NSURLSession.sharedSession()
let task = session.dataTaskWithURL(urll) {(NSData, response, error) -> Void in
do {
let records = try NSJSONSerialization.JSONObjectWithData(NSData!, options: NSJSONReadingOptions.MutableContainers) as! NSArray
for record in records {
let urlid = Int(record["slide_id"] as! String)
let urimage = record["slide_url"] as! String
print(urlid)
print(urimage)
self.urls = [urimage]
// print(self.urls.count)
}
}
catch {
print("Json Error")
}
}
task.resume()
任何帮助都会受到赞赏。
答案 0 :(得分：1)
这是我的完整代码。
但正如你看到它的4张图像。
对于更多或更少的图像，您可以轻松应用更改。
我从jared Davinson Youtube频道添加了icrousel。
享受。
//
// ViewController.swift
// parniapharmed
//
// Created by Alfredo Uzumaki on 2016 AP.
// Copyright © 2016 AP Alfredo Uzumaki. All rights reserved.
//
import UIKit
import SystemConfiguration // for checking internet connection
class ViewController: UIViewController { // if you had any problem. command this line and uncommand the below line !
// class ViewController: UIViewController , iCarouselDataSource, iCarouselDelegate {
@IBOutlet weak var allimages: UIImageView!
internal var urll:NSURL!
@IBOutlet weak var carouselView: iCarousel!
@IBOutlet weak var img1: UIImageView!
@IBOutlet weak var img2: UIImageView!
@IBOutlet weak var img3: UIImageView!
@IBOutlet weak var img4: UIImageView!
@IBOutlet weak var allimagetop: UIView!
internal var imageNinja:String = ""
internal var hasInternet:Bool! // for checking internet connection
var numbers = [Int]()
var urls = [String]()
internal var urimage = [String]()
internal var image1:String = ""
internal var image2:String = ""
internal var image3:String = ""
internal var image4:String = ""
internal var imageArray: [UIImage] = []
func carousel(carousel: iCarousel, viewForItemAtIndex index: Int, reusingView view: UIView?) -> UIView {
var tempView = UIView(frame: CGRect(x: 0, y: 0, width: 300, height: 200))
let images = UIButton(frame: CGRect(x: 0, y: 0, width: 300, height: 200))
images.backgroundColor = UIColor.blueColor()
images.backgroundImageForState(.Normal)
images.backgroundRectForBounds(CGRect(x: 0, y: 0, width: 300, height: 200))
tempView.addSubview(images)
let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 400, height: 200))
imageView.image = UIImage(named: "loading")
if (imageNinja != "") && (imageArray.count == 4) { // Checking if images fully loaded you can Delete Seccond Condition if it Coused any Error
imageView.backgroundColor = UIColor.orangeColor()
imageView.image = imageArray[index]
tempView.addSubview(imageView)
}
return imageView
}
func carousel(carousel: iCarousel, valueForOption option: iCarouselOption, withDefault value: CGFloat) -> CGFloat {
if option == iCarouselOption.Spacing {
return value * 1.1
}
return value
}
override func awakeFromNib() {
super.awakeFromNib()
numbers = [1,2,3,4] // i wrote it manualy but you can change it to: numbers = imageArray.count or write the th numbers of your images.
}
func numberOfItemsInCarousel(carousel: iCarousel) -> Int {
return numbers.count
}
//===========================Begin of View Did Load===================================
override func viewDidLoad() {
carouselView.type = .Rotary
carouselView.autoscroll = 0.1
hasInternet = connectedToNetwork() //checking internet again !
print(hasInternet) // if true then internet is ok
if hasInternet == true {
urll = NSURL(string: "http://yourwebsite.com/api/?slider=uij6sdnb") // <== put your php address here !!
let session = NSURLSession.sharedSession()
let task = session.dataTaskWithURL(urll) {(data, response, error) -> Void in
do {
let records = try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers) as! NSArray
for record in records {
//slide_url is the subject of database row from php... change it to yours
let urimage = record["slide_url"] as! String
self.urls.append(urimage)
}
print(self.urls[2])
self.image1 = self.urls[0]
self.image2 = self.urls[1]
self.image3 = self.urls[2]
self.image4 = self.urls[3]
}
catch {
print("Json Error")
}
while self.imageNinja == "" {
self.image1 = self.urls[0]
self.image2 = self.urls[1]
self.image3 = self.urls[2]
self.image4 = self.urls[3]
print("4th image downloaded")
print(self.image4)
//----------------------------------- downoad image -----------------------------------------
let url = NSURL(string: self.image1)
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)) {
let data = NSData(contentsOfURL: url!) //make sure your image in this url does exist, otherwise unwrap in a if let check
dispatch_async(dispatch_get_main_queue(), {
let image = UIImage(data: data!)
self.imageArray.append(image!)
});
}
//----------------------------------- downoad image -----------------------------------------
//----------------------------------- downoad image -----------------------------------------
let url2 = NSURL(string: self.image2)
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)) {
let data = NSData(contentsOfURL: url2!) //make sure your image in this url does exist, otherwise unwrap in a if let check
dispatch_async(dispatch_get_main_queue(), {
let image = UIImage(data: data!)
self.imageArray.append(image!)
});
}
//----------------------------------- downoad image -----------------------------------------
//----------------------------------- downoad image -----------------------------------------
let url3 = NSURL(string: self.image3)
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)) {
let data = NSData(contentsOfURL: url3!) //make sure your image in this url does exist, otherwise unwrap in a if let check
dispatch_async(dispatch_get_main_queue(), {
let image = UIImage(data: data!)
self.imageArray.append(image!)
});
}
//----------------------------------- downoad image -----------------------------------------
//----------------------------------- downoad image -----------------------------------------
let url4 = NSURL(string: self.image4)
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)) {
let data = NSData(contentsOfURL: url4!) //make sure your image in this url does exist, otherwise unwrap in a if let check
dispatch_async(dispatch_get_main_queue(), {
let image = UIImage(data: data!)
self.imageArray.append(image!)
print("imageArray Count is is :")
print(self.imageArray.count)
self.carouselView.reloadData() //this one is do nothing! i put it for luck!
});
}
//----------------------------------- downoad image -----------------------------------------
self.imageNinja = "hhh"
}
}
task.resume()
}
// ================================= end of view did load
}
// checking internet connection
func connectedToNetwork() -> Bool {
var zeroAddress = sockaddr_in()
zeroAddress.sin_len = UInt8(sizeofValue(zeroAddress))
zeroAddress.sin_family = sa_family_t(AF_INET)
guard let defaultRouteReachability = withUnsafePointer(&zeroAddress, {
SCNetworkReachabilityCreateWithAddress(nil, UnsafePointer($0))
}) else {
return false
}
var flags : SCNetworkReachabilityFlags = []
if SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) == false {
return false
}
let isReachable = flags.contains(.Reachable)
let needsConnection = flags.contains(.ConnectionRequired)
return (isReachable && !needsConnection)
}
}