swift uiwebview目标空白链接safari

我只想在safari中打开带有目标空白功能的链接。但是有了这个代码博客，所有链接都可以在safari中打开。swift和iOS 11

import UIKit
import WebKit
class ViewController: UIViewController, UIWebViewDelegate {
@IBOutlet weak var tarayici: UIWebView!
override func viewDidLoad() {
    super.viewDidLoad()
 let url = URL(string:"http://www.website.com/ios.html")
    tarayici.loadRequest(URLRequest(url: url!))
    self.tarayici.delegate = self
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}
func webView(_ webView: UIWebView, shouldStartLoadWith request: URLRequest, navigationType: UIWebViewNavigationType) -> Bool {

    if navigationType == UIWebViewNavigationType.linkClicked {
        UIApplication.shared.openURL(request.url!)
        return false
    } 
    return true
}
}

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我仍然没有得到结果。你在分享信息吗