iOS JS与原生交互(全集)

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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);
  })

iOS JS与原生交互(全集)

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