How to clear webview history?

Question

The history of webview is not clearing... What is wrong with below code?

Web view Creation

mWebViewReport=(WebView)findViewById(R.id.report_page); mWebViewReport.setWebViewClient(new HelloWebViewClient()); mWebViewReport.getSettings().setBuiltInZoomControls(true); 

Load help file when help button click

mWebViewReport.loadUrl("file:///android_asset/help.html"); mWebViewReport.clearHistory(); mWebViewReport.clearCache(true); 

load Summary file when summary button click

  mWebViewReport.loadUrl("file:///android_asset/summary.html");      //On back button click      if (mWebViewReport.canGoBack()) {             mWebViewReport.goBack();             return ;       } 

Here i can see the Help page too...

Answer 1

You can't clear history while the webview is loading a page (url) in order to clear the history setup onPageFinished listener as follows

declare a public var before the onCreate

boolean clearHistory = false; 

now when you declare your mWebViewReport set this up

mWebViewReport.setWebViewClient(new WebViewClient(){      @Override     public void onPageFinished(WebView view, String url)      {         if (clearHistory)         {             clearHistory = false;                     mWebViewReport.clearHistory();         }             super.onPageFinished(view, url);     } }); 

Now when you call your help url insted of clearing the history just set clearHistory to true

mWebViewReport.loadUrl("file:///android_asset/help.html"); mWebViewReport.clearHistory();  // REMOVE THIS LINE mWebViewReport.clearCache(true); // REMOVE THIS LINE clearHistory = true; // ADD THIS LINE 

Answer 2

I think, clearHistory() clears the back and forward list. So the currently loaded url will still remain in the back list.