我有一个非常简单的UIWebView,包含我的应用程序包中的内容。我想任何链接在web视图中打开Safari而不是在web视图。这可能吗?
将这个添加到UIWebView委托:
(经过编辑以检查导航类型。你也可以传递file://请求,这将是相对链接)
file://
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType { if (navigationType == UIWebViewNavigationTypeLinkClicked ) { [[UIApplication sharedApplication] openURL:[request URL]]; return NO; } return YES; }
斯威夫特版本:
func webView(webView: UIWebView, shouldStartLoadWithRequest request: NSURLRequest, navigationType: UIWebViewNavigationType) -> Bool { if navigationType == UIWebViewNavigationType.LinkClicked { UIApplication.sharedApplication().openURL(request.URL!) return false } return true }
Swift 3版本:
func webView(_ webView: UIWebView, shouldStartLoadWith request: URLRequest, navigationType: UIWebViewNavigationType) -> Bool { if navigationType == UIWebViewNavigationType.linkClicked { UIApplication.shared.openURL(request.url!) return false } return true }
Swift 4版本:
func webView(_ webView: UIWebView, shouldStartLoadWith request: URLRequest, navigationType: UIWebView.NavigationType) -> Bool { guard let url = request.url, navigationType == .linkClicked else { return true } UIApplication.shared.open(url, options: [:], completionHandler: nil) return false }
< em > < / em >更新
由于openURL在iOS 10中已弃用:
openURL
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType { if (navigationType == UIWebViewNavigationTypeLinkClicked ) { UIApplication *application = [UIApplication sharedApplication]; [application openURL:[request URL] options:@{} completionHandler:nil]; return NO; } return YES; }
对user306253的回答的一个快速评论:小心,当你自己尝试在UIWebView中加载一些东西时(即即使从代码中加载),这个方法将防止它发生。
你能做什么来防止这种情况(感谢韦德):
if (inType == UIWebViewNavigationTypeLinkClicked) { [[UIApplication sharedApplication] openURL:[inRequest URL]]; return NO; } return YES;
你可能还想处理UIWebViewNavigationTypeFormSubmitted和UIWebViewNavigationTypeFormResubmitted类型。
UIWebViewNavigationTypeFormSubmitted
UIWebViewNavigationTypeFormResubmitted
其他答案有一个问题:它们依赖于你所做的操作,而不是链接本身来决定是在Safari中加载还是在webview中加载。
有时候这正是你想要的,这很好;但有些时候,特别是当你的页面中有锚点链接时,你想在Safari中只打开外部链接,而不是内部链接。在这种情况下,你应该检查请求的URL.host属性。
URL.host
我使用这段代码来检查正在解析的URL中是否有主机名,或者它是否是嵌入的html:
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType { static NSString *regexp = @"^(([a-zA-Z]|[a-zA-Z][a-zA-Z0-9-]*[a-zA-Z0-9])[.])+([A-Za-z]|[A-Za-z][A-Za-z0-9-]*[A-Za-z0-9])$"; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regexp]; if ([predicate evaluateWithObject:request.URL.host]) { [[UIApplication sharedApplication] openURL:request.URL]; return NO; } else { return YES; } }
当然,您可以调整正则表达式以满足您的需要。
如果有人想知道,Drawnonward的解决方案在斯威夫特中是这样的:
func webView(webView: UIWebView!, shouldStartLoadWithRequest request: NSURLRequest!, navigationType: UIWebViewNavigationType) -> Bool { if navigationType == UIWebViewNavigationType.LinkClicked { UIApplication.sharedApplication().openURL(request.URL) return false } return true }
在我的例子中,我想确保web视图中的所有东西都能打开Safari,除了初始加载,所以我使用。
- (BOOL)webView:(UIWebView *)inWeb shouldStartLoadWithRequest:(NSURLRequest *)inRequest navigationType:(UIWebViewNavigationType)inType { if(inType != UIWebViewNavigationTypeOther) { [[UIApplication sharedApplication] openURL:[inRequest URL]]; return NO; } return YES; }
在Swift中,你可以使用以下代码:
extension YourViewController: UIWebViewDelegate { func webView(_ webView: UIWebView, shouldStartLoadWith request: URLRequest, navigationType: UIWebView.NavigationType) -> Bool { if let url = request.url, navigationType == UIWebView.NavigationType.linkClicked { UIApplication.shared.open(url, options: [:], completionHandler: nil) return false } return true } }
确保检查了URL值和navigationType。
下面是Xamarin iOS版的drawnonward的答案。
class WebviewDelegate : UIWebViewDelegate { public override bool ShouldStartLoad (UIWebView webView, NSUrlRequest request, UIWebViewNavigationType navigationType) { if (navigationType == UIWebViewNavigationType.LinkClicked) { UIApplication.SharedApplication.OpenUrl (request.Url); return false; } return true; } }
公认的答案行不通。
如果你的页面通过Javascript加载url, navigationType将是UIWebViewNavigationTypeOther。不幸的是,这也包括后台页面加载,如分析。
navigationType
UIWebViewNavigationTypeOther
为了检测页面导航,你需要比较[request URL]和[request mainDocumentURL]。
[request URL]
[request mainDocumentURL]
这个解决方案将在所有情况下工作:
- (BOOL)webView:(UIWebView *)view shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)type { if ([[request URL] isEqual:[request mainDocumentURL]]) { [[UIApplication sharedApplication] openURL:[request URL]]; return NO; } else { return YES; } }
应用拒绝
最后,UIWbView已经死了,苹果将不再接受它。
UIWbView
苹果开始向所有仍在使用UIWebView的应用程序所有者发送电子邮件:
UIWebView
弃用API使用——苹果将停止接受使用UIWebView API的应用程序提交。
苹果非常重视用户隐私,很明显他们不会允许不安全的webview。
所以要尽快从你的应用中移除UIWebView。不要使用尝试使用__ABC0在新创建的应用程序和我更喜欢使用WKWebView如果可能的话
WKWebView
ITMS-90809:废弃的API使用-苹果将停止接受 提交使用UIWebView api的应用程序。看到 https://developer.apple.com/documentation/uikit/uiwebview获取更多信息 信息。< / p >
例子:
import UIKit import WebKit class WebInfoController: UIViewController,WKNavigationDelegate { var webView : WKWebView = { var webview = WKWebView() return webview }() var _fileName : String! override func viewDidLoad() { self.view.addSubview(webView) webView.fillSuperview() let url = Bundle.main.url(forResource: _fileName, withExtension: "html")! webView.loadFileURL(url, allowingReadAccessTo: url) let request = URLRequest(url: url) webView.load(request) } func webView(webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: NSError) { print(error.localizedDescription) } func webView(webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) { print("Strat to load") } func webView(webView: WKWebView, didFinishNavigation navigation: WKNavigation!) { print("finish to load") } }
UIWebView和UIWebViewDelegate已弃用。你将不被允许将更新推送到Appstore。参考
UIWebViewDelegate
使用WKWebView和WKNavigationDelegate
示例代码:
class YourClass: WKNavigationDelegate { override public func viewDidLoad() { super.viewDidLoad() let webView = WKWebView() webView.navigationDelegate = self self.view.addaddSubview(webView) } public func webView(_ webView: WKWebView, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) { let cred = URLCredential(trust: challenge.protectionSpace.serverTrust!) completionHandler(.useCredential, cred) } public func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Swift.Void) { self.webView.load(navigationAction.request) decisionHandler(.allow) } }