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"Uncaught TypeError: window.HTMLOUT.showHTML is not a function"

I am trying to add JavaScript to read at a specific value on load webView.

These are the properties that I used for mine webView.

    webView.getSettings().setBuiltInZoomControls(true);
    webView.getSettings().setCacheMode(2);
    webView.getSettings().setDomStorageEnabled(true);
    webView.clearHistory();
    webView.clearCache(true);
    webView.getSettings().setJavaScriptEnabled(true);
    webView.getSettings().setSupportZoom(true);
    webView.getSettings().setUseWideViewPort(false);
    webView.getSettings().setLoadWithOverviewMode(false);
    webView.addJavascriptInterface(new MyJavaScriptInterface(), "HTMLOUT");

and I embed javacript in my method onPageFInished().

        @Override
        public void onPageFinished(final WebView view, final String url) {
            webView.post(new Runnable() {
                @Override
                public void run() {
                    webView.loadUrl("javascript:window.HTMLOUT.showHTML('<head>'+document.getElementsByTagName('input')[0].value+'</head>');");   
                }
            });
            super.onPageFinished(view, url);
        }

Below is the code MyJavaScriptInterface.

public  class MyJavaScriptInterface{

    @JavascriptInterface
    public void showHTML(String html_data) {
        if(html_data.contains("response_code")){
            Log.e(TAG, " ======>  HTML Data : "+  html_data);
            new MakeQueryPayment().execute();
        }        
    }
}

The error I captured from Logcat.

01-08 17:56:43.701 I/chromium(27026): [INFO:CONSOLE(1)] "Uncaught TypeError: window.HTMLOUT.showHTML is not a function", source:  (1)

I only encountered this problem on the Samsung Galaxy Tab , model number SM-T550 , Android version 5.0.2 . In the other devices that we have, it works fine. Can anyone help me on this. Thanks in advance.

+4
1

Galaxy Tab 4, .

WebView

WebView webView = new WebView(this);
setContentView(webView);
webView.clearHistory();
webView.clearCache(true);
webView.getSettings().setBuiltInZoomControls(true);
webView.getSettings().setCacheMode(2);
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setSupportZoom(true);
webView.getSettings().setUseWideViewPort(false);
webView.getSettings().setLoadWithOverviewMode(false);
webView.addJavascriptInterface(new MyJavaScriptInterface(), "HTMLOUT");
webView.loadUrl("http://stackoverflow.com/questions/34746626/uncaught-typeerror-window-htmlout-showhtml-is-not-a-function");

webView.setWebViewClient(new WebViewClient() {
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
            return true;
    }              

    @Override
    public void onPageStarted(WebView view, String url,
                    Bitmap favicon) {
    }

    public void onPageFinished(WebView view, String url) {
        view.loadUrl("javascript:window.HTMLOUT.showHTML('<html>'+document.getElementsByTagName('html')[0].innerHTML+'</html>');");
    }
});

JavaScript

public  class MyJavaScriptInterface{

    @JavascriptInterface
    public void showHTML(String html_data) {
        Log.e("", " ======>  HTML Data : "+  html_data);
    }
}
+2

Source: https://habr.com/ru/post/1623945/

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