无法从网络向 iCarousel 显示图像 url
Can't Show images to iCarousel from web url
我想在 iCarousel SlideShow 上显示网站上的一些图片。
我从 iCarousel 获得空幻灯片。
我是初学者，偶然在我的应用程序上尝试了很多代码，但注意到发生了
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()
任何帮助将不胜感激。
这是我的完整代码。
但是正如您看到的那样，它是 4 幅图像。
对于更多或更少的图像，您可以轻松应用更改。
我添加了来自 jared Davinson Youtube 频道的 icrousel。
尽情享受吧。
//
// 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([=10=]))
}) 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)
}
}
我想在 iCarousel SlideShow 上显示网站上的一些图片。
我从 iCarousel 获得空幻灯片。
我是初学者，偶然在我的应用程序上尝试了很多代码，但注意到发生了
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()
任何帮助将不胜感激。
这是我的完整代码。
但是正如您看到的那样，它是 4 幅图像。
对于更多或更少的图像，您可以轻松应用更改。
我添加了来自 jared Davinson Youtube 频道的 icrousel。
尽情享受吧。
//
// 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([=10=]))
}) 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)
}
}