问如何停止在我的Android应用的Webview中打开广告？

EN

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        WebView mainWebView = (WebView) findViewById(R.id.mainWebView);
        mainWebView.setWebViewClient(new MyCustomWebViewClient());
        mainWebView.loadUrl("http://www.m.moneycontrol.com/");
    //  mainWebView.setScrollBarStyle(MainActivity.this.SCROLLBARS_INSIDE_OVERLAY);

        WebSettings webSettings = mainWebView.getSettings();
        webSettings.setJavaScriptEnabled(true);
         mainWebView.setWebViewClient(new WebViewClient() {
               public boolean shouldOverrideUrlLoading (WebView view, String url){
                   //True if the host application wants to leave the current WebView and handle the url itself, otherwise return false.
                   return true;
               }
             });
    }

    private class MyCustomWebViewClient extends WebViewClient {
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);
            return true;
        }