WKWebView가 target =“_ blank”인 링크를 열지 않는 이유는 무엇입니까?

WKWebView가 target =“_ blank”인 링크를 열지 않는 이유는 무엇입니까?

---

WKWebViewtarget="_blank"HTML <a href>태그 에 '새 창에서 열기'속성 이있는 링크는 열리지 않습니다 .

---

내 해결책은 탐색을 취소하고 loadRequest :로 요청을 다시로드하는 것입니다. 이것은 항상 현재 프레임에서 새 창을 여는 UIWebView와 같은 유사한 동작이 될 것입니다.

먼저 WKUIDelegate. 그리고로 설정합니다 _webview.UIDelegate. 그런 다음 구현하십시오.

- (WKWebView *)webView:(WKWebView *)webView createWebViewWithConfiguration:(WKWebViewConfiguration *)configuration forNavigationAction:(WKNavigationAction *)navigationAction windowFeatures:(WKWindowFeatures *)windowFeatures
{

  if (!navigationAction.targetFrame.isMainFrame) {

    [webView loadRequest:navigationAction.request];
  }

  return nil;
}

---

@Cloud Xu의 대답이 정답입니다. 참고로 여기 Swift에 있습니다.

// this handles target=_blank links by opening them in the same view
func webView(webView: WKWebView!, createWebViewWithConfiguration configuration: WKWebViewConfiguration!, forNavigationAction navigationAction: WKNavigationAction!, windowFeatures: WKWindowFeatures!) -> WKWebView! {
    if navigationAction.targetFrame == nil {
        webView.loadRequest(navigationAction.request)
    }
    return nil
}

---

최신 버전의 Swift 4.2 이상을 사용하려면

import WebKit

WKUIDelegate로 수업 확장

WebView에 대한 위임 설정

self.webView.uiDelegate = self

프로토콜 방법 구현

func webView(_ webView: WKWebView, createWebViewWith configuration: WKWebViewConfiguration, for navigationAction: WKNavigationAction, windowFeatures: WKWindowFeatures) -> WKWebView? {
    if navigationAction.targetFrame == nil {
        webView.load(navigationAction.request)
    }
    return nil
}

---

자신을 WKNavigationDelegate 로 추가

_webView.navigationDelegate = self;

델리게이트 콜백에서 다음 코드를 구현합니다 .determinPolicyForNavigationAction : decisionHandler :

- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler
{
    //this is a 'new window action' (aka target="_blank") > open this URL externally. If we´re doing nothing here, WKWebView will also just do nothing. Maybe this will change in a later stage of the iOS 8 Beta
    if (!navigationAction.targetFrame) { 
        NSURL *url = navigationAction.request.URL;
        UIApplication *app = [UIApplication sharedApplication];
        if ([app canOpenURL:url]) {
            [app openURL:url];
        }
    }
    decisionHandler(WKNavigationActionPolicyAllow);
}

추신 :이 코드는 STKWebKitViewControllerWKWebView 주변에 사용 가능한 UI를 래핑하는 내 작은 프로젝트 에서 가져온 것입니다.

---

이미 WKWebView.navigationDelegate를 설정 한 경우

WKWebView.navigationDelegate = self;

다음을 구현하면됩니다.

- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler
{
    BOOL shouldLoad = [self shouldStartLoadWithRequest:navigationAction.request]; // check the url if necessary

    if (shouldLoad && navigationAction.targetFrame == nil) {
        // WKWebView ignores links that open in new window
        [webView loadRequest:navigationAction.request];
    }

    // always pass a policy to the decisionHandler
    decisionHandler(shouldLoad ? WKNavigationActionPolicyAllow : WKNavigationActionPolicyCancel);
}

이렇게하면 WKUIDelegate 메서드를 구현할 필요가 없습니다.

---

이러한 솔루션 중 어느 것도 나를 위해 일하지 않았으며 다음과 같이 문제를 해결했습니다.

1) WKUIDelegate 구현

@interface ViewController () <WKNavigationDelegate, WKUIDelegate>

2) wkWebview의 UIDelegate 델리게이트 설정

self.wkWebview.UIDelegate = self;

3) createWebViewWithConfiguration 메서드 구현

- (WKWebView *)webView:(WKWebView *)webView createWebViewWithConfiguration:(WKWebViewConfiguration *)configuration forNavigationAction:(WKNavigationAction *)navigationAction windowFeatures:(WKWindowFeatures *)windowFeatures {

if (!navigationAction.targetFrame.isMainFrame) {
    [UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
    [[UIApplication sharedApplication] openURL:[navigationAction.request URL]];
}
return nil;  }

---

Bill Weinman의 Swift 코드가 올바른지 확인합니다. 하지만 저처럼 iOS 개발을 처음 접하는 경우 UIDelegate가 작동하도록 위임해야한다는 점을 언급해야합니다.

이 같은:

self.webView?.UIDelegate = self

따라서 변경해야 할 세 곳이 있습니다.

---

다른 뷰 컨트롤러를 푸시하거나 새 탭을 열 수도 있습니다.

func webView(webView: WKWebView, createWebViewWithConfiguration configuration: WKWebViewConfiguration, forNavigationAction navigationAction: WKNavigationAction, windowFeatures: WKWindowFeatures) -> WKWebView? {
    var wv: WKWebView?

    if navigationAction.targetFrame == nil {
        if let vc = self.storyboard?.instantiateViewControllerWithIdentifier("ViewController")  as? ViewController {
            vc.url = navigationAction.request.URL
            vc.webConfig = configuration
            wv = vc.view as? WKWebView

            self.navigationController?.pushViewController(vc, animated: true)
        }
    }

    return wv
}

---

이것은 나를 위해 일했습니다.

-(WKWebView *)webView:(WKWebView *)webView createWebViewWithConfiguration:(WKWebViewConfiguration *)configuration forNavigationAction:(WKNavigationAction *)navigationAction windowFeatures:(WKWindowFeatures *)windowFeatures {

if (!navigationAction.targetFrame.isMainFrame) {


    WKWebView *newWebview = [[WKWebView alloc] initWithFrame:self.view.frame configuration:configuration];
    newWebview.UIDelegate = self;
    newWebview.navigationDelegate = self;
    [newWebview loadRequest:navigationAction.request];
    self.view = newWebview;

    return  newWebview;
}

return nil;
}

- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {

    decisionHandler(WKNavigationActionPolicyAllow);
}

- (void)webViewDidClose:(WKWebView *)webView {
    self.view = self.webView;
}

보시다시피, 여기서 우리가하는 일은 webView새 URL로 새 URL을 열고 닫을 가능성을 제어하는 ​​것 second webview입니다. 첫 번째에 표시 할 응답이 필요한 경우에만 가능합니다 .

---

을 (를) 사용하여 해결할 수없는 문제가 발생했습니다 webView.load(navigationAction.request). 그래서 나는 새로운 webView를 만들어서 잘 작동합니다.

//MARK:- WKUIDelegate
func webView(_ webView: WKWebView, createWebViewWith configuration: WKWebViewConfiguration, for navigationAction: WKNavigationAction, windowFeatures: WKWindowFeatures) -> WKWebView? {
    NSLog(#function)

    if navigationAction.targetFrame == nil {
        NSLog("=> Create a new webView")

        let webView = WKWebView(frame: self.view.bounds, configuration: configuration)
        webView.uiDelegate = self
        webView.navigationDelegate = self

        self.webView = webView

        return webView
    }
    return nil
}

---

Allen huang 답변을 바탕으로

세부

• Xcode 버전 10.3 (10G8), Swift 5

목표

• 링크 감지 target=“_blank”
• push 현재 컨트롤러가있는 경우 webView로 컨트롤러보기 navigationController
• present 다른 모든 경우에 webView가있는 뷰 컨트롤러

해결책

webView.uiDelegate = self

// .....

extension ViewController: WKUIDelegate {
    func webView(_ webView: WKWebView, createWebViewWith configuration: WKWebViewConfiguration, for navigationAction: WKNavigationAction, windowFeatures: WKWindowFeatures) -> WKWebView? {
        guard   navigationAction.targetFrame == nil,
                let url =  navigationAction.request.url else { return nil }
        let vc = ViewController(url: url, configuration: configuration)
        if let navigationController = navigationController {
            navigationController.pushViewController(vc, animated: false)
            return vc.webView
        }
        present(vc, animated: true, completion: nil)
        return nil
    }
}

전체 샘플

Info.plist

Info.plist 전송 보안 설정에 추가

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>

ViewController

import UIKit
import WebKit

class ViewController: UIViewController {

    private lazy var url = URL(string: "https://www.w3schools.com/html/tryit.asp?filename=tryhtml_links_target")!
    private weak var webView: WKWebView!

    init (url: URL, configuration: WKWebViewConfiguration) {
        super.init(nibName: nil, bundle: nil)
        self.url = url
        navigationItem.title = ""
    }

    required init?(coder aDecoder: NSCoder) { super.init(coder: aDecoder) }

    override func viewDidLoad() {
        super.viewDidLoad()
        initWebView()
        webView.loadPage(address: url)
    }

    private func initWebView() {
        let webView = WKWebView(frame: .zero, configuration: WKWebViewConfiguration())
        view.addSubview(webView)
        self.webView = webView
        webView.navigationDelegate = self
        webView.uiDelegate = self
        webView.translatesAutoresizingMaskIntoConstraints = false
        webView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor).isActive = true
        webView.rightAnchor.constraint(equalTo: view.safeAreaLayoutGuide.rightAnchor).isActive = true
        webView.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor).isActive = true
        webView.leftAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leftAnchor).isActive = true
    }
}

extension ViewController: WKNavigationDelegate {
    func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
        guard let host = webView.url?.host else { return }
        navigationItem.title = host
    }
}

extension ViewController: WKUIDelegate {
    func webView(_ webView: WKWebView, createWebViewWith configuration: WKWebViewConfiguration, for navigationAction: WKNavigationAction, windowFeatures: WKWindowFeatures) -> WKWebView? {
        guard   navigationAction.targetFrame == nil,
                let url =  navigationAction.request.url else { return nil }
        let vc = ViewController(url: url, configuration: configuration)
        if let navigationController = navigationController {
            navigationController.pushViewController(vc, animated: false)
            return vc.webView
        }
        present(vc, animated: true, completion: nil)
        return nil
    }
}

extension WKWebView {
    func loadPage(address url: URL) { load(URLRequest(url: url)) }
    func loadPage(address urlString: String) {
        guard let url = URL(string: urlString) else { return }
        loadPage(address: url)
    }
}

스토리 보드

버전 1

버전 2

---

**Use following function to create web view**

func initWebView(configuration: WKWebViewConfiguration) 
{
        let webView = WKWebView(frame: UIScreen.main.bounds, configuration: configuration)
        webView.uiDelegate = self
        webView.navigationDelegate = self
        view.addSubview(webView)
        self.webView = webView
    }

**In View Did Load:**

 if webView == nil { initWebView(configuration: WKWebViewConfiguration()) }
   webView?.load(url: url1)


**WKUIDelegate Method need to be implemented**

extension WebViewController: WKUIDelegate {

    func webView(_ webView: WKWebView, createWebViewWith configuration: WKWebViewConfiguration, for navigationAction: WKNavigationAction, windowFeatures: WKWindowFeatures) -> WKWebView? {
        // push new screen to the navigation controller when need to open url in another "tab"
        print("url:\(String(describing: navigationAction.request.url?.absoluteString))")
        if let url = navigationAction.request.url, navigationAction.targetFrame == nil {
            let viewController = WebViewController()
            viewController.initWebView(configuration: configuration)
            viewController.url1 = url
            DispatchQueue.main.async { [weak self] in
                self?.navigationController?.pushViewController(viewController, animated: true)
            }
            return viewController.webView
        }

        return nil
    }
}

extension WKWebView 

{
    func load(url: URL) { load(URLRequest(url: url)) }
}

---

Cloud xu의 대답은 내 문제를 해결합니다.

누군가 동등한 Swift (4.x / 5.0) 버전이 필요한 경우 다음과 같습니다.

func webView(_ webView: WKWebView, createWebViewWith configuration: WKWebViewConfiguration, for navigationAction: WKNavigationAction, windowFeatures: WKWindowFeatures) -> WKWebView? {
    if let frame = navigationAction.targetFrame,
        frame.isMainFrame {
        return nil
    }
    // for _blank target or non-mainFrame target
    webView.load(navigationAction.request)
    return nil
}

물론 webView.uiDelegate먼저 설정해야합니다 .

참고 URL : https://stackoverflow.com/questions/25713069/why-is-wkwebview-not-opening-links-with-target-blank