ios - 错误 - 线程 1 exc_bad_instruction(代码=exc_1386_invop 子代码=0x0)

Question

我对这段代码有疑问-

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


func get(){
    let url = NSURL(string: "http://www..php")
    let data = NSData(contentsOfURL: url!)
    values = try! NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers) as!NSArray

    tableView.reloadData()
}

func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return values.count;
}

这个错误 线程 1 exc_bad_instruction (code=exc_1386_invop subcode=0x0)

Answer 1

试试这个-

func get()
{
if let url = NSURL(string: "https://www.hackingwithswift.com") {
    do {

        let JSONData = NSData(contentsOfURL: url)
        do {
            let JSON = try NSJSONSerialization.JSONObjectWithData(JSONData!, options:NSJSONReadingOptions(rawValue: 0))
            guard let JSONDictionary :NSDictionary = JSON as? NSDictionary else {
                print("Not a Dictionary")
                // put in function
                return
            }
            print("JSONDictionary! \(JSONDictionary)")
        }
        catch let JSONError as NSError {
            print("\(JSONError)")
        }
    } catch {
        // contents could not be loaded
    }
}
else
   {
    // the URL was bad!
  }
}