Android application closes without errors - WebView Javascript

Question

I have a webview with an HTML webpage downloaded from the server, and I fill in the dynamic data and add lines of information to this webpage. I used the following code on this webpage to enable javascript:

class JSClass { Context jsContext; JSClass(Context c){ jsContext = c; } public void getHTMLContent(String info) { Log.i(TAG, "Info: "+info); } } WebView webview = (WebView) findViewById(R.id.webView); webview.loadDataWithBaseURL("", htmlcontent, "text/html", "utf-8", ""); webview.getSettings().setJavaScriptEnabled(true); webview.setWebChromeClient(new WebChromeClient()); webview.addJavascriptInterface(new JSClass(this), "Android"); webview.loadUrl("javascript:"+ "var rows = document.getElementsByClassName('info');"+ "if(rows !== null){"+ "for(var i=0;i<rows.length;i++){"+ "rows[i].onclick = function(){"+ "var workId = 0;"+ "workId = parseInt(this.cells[0].innerHTML);"+ "window.Android.getHTMLContent(workId);"+ "}}}" ); 

when I click on any line, I intend to download images from the server depending on the data in the line. It works fine on the first click, but the second time I click, the application closes without any errors. I do not understand the reason. Please help. thanks in advance

Answer 1

I think you need to use loadDataWithBaseURL again instead of just loadUrl .

See this link. There is a section explaining loadData that states:

Note that a similar JavaScript source policy means that a script running on a page loaded using this method will not be able to access content loaded using any other scheme than “data”, including “http (s)”. To avoid this limitation, use loadDataWithBaseURL () with the appropriate base URL.

Answer 2

FINALLY!! fixed it. The adapter kept previously downloaded images, as well as images downloaded during the second click, and I do not understand why the application was closed without giving any memory leaks. In any case, it now works fine after use

 adapter.clear(); 

or reinitializing the adapter to zero after loading all thumb images (I don't know if this is very efficient). After cleaning the adapter, use

 adapter.notifyDataSetChanged();