由于我无法控制Web视图内容,所以我向WKWebview注入了一个包含jQuery AJAX请求监听器的java脚本.

当监听器捕获请求时,它会在方法中发送本机应用程序请求主体：

webkit.messageHandlers.callbackHandler.postMessage(data);

本机应用程序在委托中捕获消息：

(void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message

并执行相应的动作

这里是相关代码：

ajaxHandler.js –

//Every time an Ajax call is being invoked the listener will recognize it and  will call the native app with the request details

$( document ).ajaxSend(function( event,request,settings )  {
      callNativeApp (settings.data);
});

function callNativeApp (data) {
try {
    webkit.messageHandlers.callbackHandler.postMessage(data);
}

catch(err) {
    console.log('The native context does not exist yet');
}
}

我的ViewController代理是：

@interface BrowserViewController : UIViewController <UIWebViewDelegate,WKUIDelegate,WKNavigationDelegate,WKScriptMessageHandler,UIWebViewDelegate>

在我看来,DidLoad我正在创建一个Wkwebview：

WKWebViewConfiguration *configuration = [[WKWebViewConfiguration alloc]init];
[self addUserScriptToUserContentController:configuration.userContentController];
appWebView = [[WKWebView alloc]initWithFrame:self.view.frame configuration:configuration];
appWebView.UIDelegate =self;
appWebView.navigationDelegate=self;
[appWebView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:  @"http://#############"]]];

这是addUserScriptToUserContentController：

- (void) addUserScriptToUserContentController:(WKUserContentController *) userContentController{
NSString *jsHandler = [NSString stringWithContentsOfURL:[[NSBundle mainBundle]URLForResource:@"ajaxHandler" withExtension:@"js"] encoding:NSUTF8StringEncoding error:NULL];
WKUserScript *ajaxHandler = [[WKUserScript alloc]initWithSource:jsHandler injectionTime:WKUserScriptInjectionTimeAtDocumentEnd forMainFrameOnly:NO];
[userContentController addScriptMessageHandler:self name:@"callbackHandler"];
[userContentController addUserScript:ajaxHandler];
}