我现在卡住了一点点。首先，我的代码如下，
import UIKit
import CoreData
class ViewController: UIViewController {
var eTitles : [String] = []
var jTitles : [String] = []
var pCategories : [String] = []
var imgPaths : [String] = []
override func viewDidLoad() {
super.viewDidLoad()
let url = NSURL(string: "http://localhost:8888/post.php")
let allData = NSData(contentsOfURL: url!)
let allJsonData : AnyObject! = NSJSONSerialization.JSONObjectWithData(allData!, options: NSJSONReadingOptions(0), error: nil)
if let json = allJsonData as? Array<AnyObject>{
//println(json)
for index in 0...json.count-1{
let post : AnyObject? = json[index]
//println(post)
let collection = post! as Dictionary<String, AnyObject>
//println(collection)
//println(collection["Eng_Title"])
var eTitle : AnyObject? = collection["Eng_Title"]
var jTitle : AnyObject? = collection["Jam_Title"]
var pCategory : AnyObject? = collection["Category"]
var imgPath : AnyObject? = collection["Category_Img"]
eTitles.append(eTitle as String)
jTitles.append(jTitle as String)
pCategories.append(pCategory as String)
imgPaths.append(imgPath as String)
}
}
println(eTitles)
println(jTitles)
println(pCategories)
println(imgPaths)
for var i = 0; i < pCategories.count; i++
{
let appDelegate = UIApplication.sharedApplication().delegate as AppDelegate
let managedContext = appDelegate.managedObjectContext!
let entity = NSEntityDescription.entityForName("Category", inManagedObjectContext: managedContext)!
let category = Category(entity: entity, insertIntoManagedObjectContext:managedContext)
category.title = pCategories[i]
category.path = fetchImg(imgPaths[i])
appDelegate.saveContext()
let en = NSEntityDescription.entityForName("Post", inManagedObjectContext: managedContext)!
let post = Post(entity: en, insertIntoManagedObjectContext:managedContext)
post.jtitle = jTitles[i]
post.etitle = eTitles[i]
post.category = category
appDelegate.saveContext()
}
}
func fetchImg(path : String) -> String{
var urlWebView = NSURL(string: path)!
println(urlWebView)
var requestWebView = NSURLRequest(URL: urlWebView)
var saveP : String = ""
NSURLConnection.sendAsynchronousRequest(requestWebView, queue: NSOperationQueue.mainQueue(), completionHandler: {
response, data, error in
if error != nil {
println("There was an error")
}
else {
// let musicFile = (data: data)
var documentsDirectory:String?
var paths:[AnyObject] = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)
if paths.count > 0 {
documentsDirectory = paths[0] as? String
var savePath = documentsDirectory! + "/" + NSUUID().UUIDString + ".jpg"
println(savePath)
saveP = savePath
NSFileManager.defaultManager().createFileAtPath(savePath, contents: data, attributes: nil)
}
}
})
return saveP
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
每次我运行这个应用程序时，它都停在这一行：
NSURLConnection.sendAsynchronousRequest（requestWebView，queue：NSOperationQueue.mainQueue（），completionHandler：{
（我在这里要做的是解析Json数据并将其放入数组，然后将其保存到CoreData中。问题是 fetchImg（）函数。 我正在尝试将来自Json数据的路径传递给此函数，该函数从Web获取实际图像，创建路径并将数据保存到设备上，并返回实际保存图像的路径。）< / p>
有什么建议吗？
对不起我糟糕的英文解释!!!
谢谢！