xcode - UISearchBarDelegate 应用程序在生产中崩溃

Question

我已经创建了一个应用程序，在 iOS 14 及更高版本中使用，测试临时构建工作正常，而在应用程序上线后，同一个应用程序在从 ios14 及更高版本的 Appstore 下载后崩溃，在 iOS 12.4 工作正常请帮助如何解决它？

下面是我的代码

 class contact: UIViewController,UISearchBarDelegate   {
      
    @IBOutlet weak var searchBar: UISearchBar! //outlet connect with Storyboard

       
    override func viewDidLoad() {
        
        super.viewDidLoad()
 
        searchBar.delegate = self
        searchBar.delegate = self
        
    
        
    }
    
   //REST OF THE TABLEVIEW CODE
       
   
    
    func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {
        searchBar.resignFirstResponder()
    }
    func searchBarTextDidBeginEditing(_ searchBar: UISearchBar) {
            //code to search
    }
    
    
    func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String)
    {
        //code to search
    }
    
    
    func searchBarBookmarkButtonClicked(_ searchBar: UISearchBar) {
        searchBar.resignFirstResponder()
    }
    
    func searchBarCancelButtonClicked(_ searchBar: UISearchBar) {
        //code to cancel
    }
     
    
    
}

标签： xcodecrashuisearchbarios14