Swift iOS API控制器停止工作

Question

我正在使用一个文件来处理我对API的调用,如下所示:

import UIKit

protocol APIControllerProtocol {
    func JSONAPIResults(results: NSArray)

}

class APIController: NSObject {
    var delegate:APIControllerProtocol?

    func GetAPIResultsAsync(urlString:String, elementName:String) {

        //The Url that will be called
        var url = NSURL.URLWithString(urlString)
        //Create a request
        var request: NSURLRequest = NSURLRequest(URL: url)
        //Create a queue to hold the call
        var queue: NSOperationQueue = NSOperationQueue()

        // Sending Asynchronous request using NSURLConnection
        NSURLConnection.sendAsynchronousRequest(request, queue: queue, completionHandler:{(response:NSURLResponse!, responseData:NSData!, error: NSError!) ->Void in
            var error: AutoreleasingUnsafeMutablePointer<NSError?> = nil
            //Serialize the JSON result into a dictionary
            let jsonResult: NSDictionary! = NSJSONSerialization.JSONObjectWithData(responseData, options:NSJSONReadingOptions.MutableContainers, error: error) as? NSDictionary

            //If there is a result add the data into an array
            if jsonResult.count>0 && jsonResult["\(elementName)"]?.count > 0 {

                var results: NSArray = jsonResult["\(elementName)"] as NSArray
                //Use the completion handler to pass the results
                self.delegate?.JSONAPIResults(results)

            } else {

                println(error)
            }
        })
    }
}

我用类似的东西来调用它:

var APIBaseUrl: String = "http://***.se/**/**.php"
        var urlString:String = "\(APIBaseUrl)"

        self.api.delegate = self
        api.GetAPIResultsAsync(urlString, elementName:"groupActivities")

这最近工作得很好,但现在我的应用程序崩溃,我在APIController突出显示这一行:

let jsonResult: NSDictionary! = NSJSONSerialization.JSONObjectWithData(responseData, options:NSJSONReadingOptions.MutableContainers, error: error) as? NSDictionary

我能想到的唯一改变的是我从移动4G互联网切换到我的WiFi.

在日志中我得到: fatal error: unexpectedly found nil while unwrapping an Optional value

亮点说: Thread 5: EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)

无论我调用什么API,都会发生这种情况.我正在运行Xcode 6.0.1并且没有做任何最近的更新.

干杯!

Answer 1

很多人报告了Xcode 6.0 GM和Wifi连接的错误.

要解决此问题,请尝试以下步骤

• 关闭你的模拟器
• 关闭你的Xcode
• 转到DerviedData文件夹并删除其下的所有文件夹.(〜/ Library/Developer/Xcode/DerivedData)不要担心在Xcode中打开项目时会再次创建文件夹.