Question

I am using Android WebView to load some webpages. In my case, I have to insert some JavaScript codes before loaded webpages. Just like below:

//enable javascript
mWebView.getSettings().setJavaScriptEnabled(true);

//inject my js first. 
//I can't inject the js onPageStarted() or onPageFinished() because I need to make  sure the js
//is injected before html loaded.
mWebView.loadUrl("javascript:MyJsCode"); 

//load HTML      
mWebView.loadUrl("http://example.com/demos/index.html");

The code works fine first time, but failed when run it more than one time. Because the HTML can’t find my JS.

I think because the previous HTML is not clear completely, so mWebView.loadUrl("javascript:MyJsCode") inject MyJsCode to previous HTML instead of the new HTML.

So I thought if I could completely reset the WebView(to clear the previous HTML), will solve my issue.

I tried WebView.ClearView(), loadUrl("about:blank"), they all doesn’t work.

Anyone suggestion?

Answer 1

I think there is no way to do this except re-new a WebView.