我正在使用Swift编写一个简单的WebView,但每次尝试在iOS模拟器中启动它时,都会出现这些错误。出了什么问题?
import UIKit
class ViewController: UIViewController {
@IBOutlet var webview: UIWebView
var urlpath = "http://www.google.de"
func loadAddressURL(){
let requesturl = NSURL(string: urlpath)
let request = NSURLRequest(URL: requesturl)
webview.loadRequest(request)
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
loadAddressURL()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
错误:
fatal error: unexpectedly found nil while unwrapping an Optional value
(lldb)
self uiwebview.ViewController 0x7987fc70 0x7987fc70
request NSURLRequest * 0x78ebfc40 0x78ebfc40
requesturl NSURL * "" 0x78ec0040