Question

虽然我按住Ctrl +拖动它会被引用....但是当我运行应用程序时它崩溃了NSException ...当我检查它时说我的视图控制器没有名为gif视图的插座以及动作check_internet未在视图控制器上定义。以下是我的视图控制器代码。

import UIKit

extension UIViewController{
func checkreachability()
{
    if currentReachabilityStatus == .notReachable
    {
        let alert = UIAlertController(title: "No Internet ", message: "Please Check Your Internet Connection", preferredStyle: UIAlertControllerStyle.alert)

        // add an action (button)
        alert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.default, handler: nil))

        // show the alert
        self.present(alert, animated: true, completion: nil)
    }
}

的ViewController：

class ViewController: UIViewController {

  @IBOutlet weak var gifview: UIImageView!

  override func viewDidLoad() {
    super.viewDidLoad()

    gifview.loadGif(name: "source")
    // Do any additional setup after loading the view, typically from a nib.
  }

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

  @IBAction func check_internet(_ sender: UIButton) { 
    checkreachability()
  }

}

Answer 1

删除对ViewController.swift的引用。然后将其重新添加到项目中，再次清理并构建。

Answer 2

不要创建弱引用。因为弱引用无法成立从@IBOutlet删除弱点，然后重试

我的商店没有被引用

2 个答案: