发表新帖
发表新帖

E/Web Console(8272): Uncaught ReferenceError: functionName is not defined:1 while loading webviews in a View Pager

前端 未结
关注
3 1236
星月不相逢
星月不相逢 2021-01-21 14:47

I am trying to load webviews in a view pager.

public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanc
相关标签:
3条回答
  • 天涯浪人
    2021-01-21 14:59

    I was getting Uncaught Reference Error: JavascriptInterfaceName is not defined on every second startup of my hybrid application on 4.3 and below, and so I did this thanks to @Abi in my WebChromeClient class:

    @Override
@SuppressLint({"AddJavascriptInterface", "InflateParams"})
public boolean onConsoleMessage(@NonNull ConsoleMessage consoleMessage) {
    if("Uncaught ReferenceError: JavascriptInterfaceName is not defined".equals(consoleMessage.message())) {
        webView.addJavascriptInterface(new WebAppInterface(), "JavascriptInterfaceName ");
        webView.reload();
    }
    return super.onConsoleMessage(consoleMessage);
}

    And it works! Thank you very much!

    0 讨论(0)
  • 感情败类
    2021-01-21 15:05

    I had a fix on this

    just set webChromeClient and catch the error and reload the page...

        myWebView.setWebViewClient(new WebViewClient() {
        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {
            isLoading = true;
        }

        @Override
        public void onPageFinished(WebView view, String url) {
            myWebView.loadUrl("javascript:testFunction()");
        }
    });

    myWebView.setWebChromeClient(new WebChromeClient() {
        @Override
        public boolean onConsoleMessage(ConsoleMessage consoleMessage) {
            MessageLevel level = consoleMessage.messageLevel();
            if(level.ordinal() == 3) { // Error ordinal
                if(loading) {
                    myWebView.stopLoading();
                    myWebView.loadUrl(AppConstants.ARTICLE_PAGE_URL);
                }
            }
        }
        return false;
    }
    0 讨论(0)
  • 闹比i
    2021-01-21 15:22

    try something like this and make changes as per your requirement

    webview code

        web.getSettings().setJavaScriptEnabled(true);
    JavaScriptInterface JSInterface = new JavaScriptInterface(this);
    web.addJavascriptInterface(JSInterface, "JSInterface"); 
    setContentView(web);
    web.loadUrl("file:///android_asset/demo.html");

    javascript interface

    public class JavaScriptInterface {
        Context mContext;

        /** Instantiate the interface and set the context */
        JavaScriptInterface(Context c) {
            mContext = c;
        }

        public void showToast()
        {
            Toast.makeText(mContext, "Button Clicked", Toast.LENGTH_SHORT).show();
        }
    }

    webpage code

    <!DOCTYPE html>
<html>
  <head>
   <script>
     var i=0;
     function myFunction()
     {

       JSInterface.showToast();
     }
   </script>
 </head>

 <body>

    <button onclick="myFunction()">Try it</button>

    <p>By clicking the button above, a function will be called. The function will alert a message.</p>

 </body>
</html>

    EDIT

    function myFunction()
 {

   do here somthing
 }
    0 讨论(0)
 看不清?
提交回复
热议问题