How to clear webview history?

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