• iOS JS与原生交互(全集)


    混合开发的重要性不言而喻,一个移动端开发的了解前端开发是一个趋向,总之每个人都向往成为一个全栈工程师,废话不多说,直接上主题

    一、交互(UIWebView)

    1、OC调用JS

      (1)OC调用代码

      [self.webView stringByEvaluatingJavaScriptFromString:@"ocCallJSFunction({'name':'xiaoxiao'})"];

     (2)JS代码

      </script>
       function ocCallJSFunction(data) {
        var obj = eval(data);
        alert(obj.name);
       }
      <script>

    2、JS调用OC

    (1)OC代码

      - (void)webViewDidFinishLoad:(UIWebView *)webView {

          JSContext *context = [webView valueForKeyPath:@"documentView.webView.mainFrame.javaScriptContext"];

          context[@"jsCallOCFunction"] = ^() {        

              NSLog(@"JS调用OC成功");

              NSArray *args = [JSContext currentArguments];

              for (JSValue *jsVal in args) {

                  NSLog(@"%@", jsVal.toDictionary);

              }

          };

      }

     (2)JS调用代码

      </script>

      var message = {
        'method' : 'hello',
        'param1' : 'dada',
       };
      jsCallOCFunction(message);

      <script>

    二、交互(WKWebView)

    1、OC调用JS

      (1)OC调用代码

        [self.wkWebView evaluateJavaScript:@"ocCallJSFunction({'name':'xiaoxiao'})" completionHandler:^(id _Nullable obj, NSError * _Nullable error) {

                NSLog(@"evaluateJavaScript, obj = %@, error = %@", obj, error);

          }];

     (2)JS代码

      </script>
       function ocCallJSFunction(data) {
        var obj = eval(data);
        alert(obj.name);
       }
      <script>

    2、JS调用OC

    (1)OC代码

      // 初始化WKWebView

      WKWebViewConfiguration *config = [[WKWebViewConfiguration alloc] init];

         [config.userContentController addScriptMessageHandler:self name:@"jsCallOCFunction"];

          WKWebView *wkWebView = [[WKWebView alloc] initWithFrame:CGRectZero configuration:config];

      

      #pragma mark - WKScriptMessageHandler

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

          NSLog(@"name = %@",message.name);

          NSLog(@"body = %@",message.body);

          NSLog(@"frameInfo = %@",message.frameInfo);

      }

     (2)JS调用代码

      </script>

      var message = {
        'method' : 'hello',
        'param1' : 'dada',
       };
      window.webkit.messageHandlers.jsCallOCFunction.postMessage(message);

      <script>

    三、交互(WebViewJavascriptBridge)

    功能总结:

    OC调JS调用成功,JS可以回调数据到OC

    JS调OC调用成功,OC可以回调数据到JS

    1、OC调用JS

      (1)OC调用代码

      _bridge = [WebViewJavascriptBridge bridgeForWebView:wkWebView];

      id data = @{@"name" : @"xiaoxiao"};

         [_bridge callHandler:@"ocCallJSFunction" data:data responseCallback:^(id response) {

              NSLog(@"这里是OC调用JS成功后,JS回调的参数:%@", response);

         }];

     (2)JS代码

      </script>

      // 注册JS方法供OC调用
      bridge.registerHandler('ocCallJSFunction', function(data, responseCallback) {
        var obj = eval(data);
        alert(obj.userId);

        var responseData = { 'code':'200' }
        responseCallback(responseData)
      })

      <script>

    2、JS调用OC

    (1)OC代码

      [_bridge registerHandler:@"jsCallOCFunction" handler:^(id data, WVJBResponseCallback responseCallback) {

            NSLog(@"JS传过来的参数: %@", data);

            responseCallback(@"这是JS调用OC成功后,OC回调的参数");

        }];

     (2)JS调用代码

      // JS调用OC注册的方法
      bridge.callHandler('jsCallOCFunction', {'name':'dada'}, function responseCallback(responseData) {

        alert(responseData);
      })

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  • 原文地址:https://www.cnblogs.com/yang-shuai/p/9379044.html
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