Android WebView 标记 a 无法使用 tel Uri 启动意图

Android WebView tag a can not start a intent with tel Uri

点击 Common tag a contains 'tel:' Uri in HTML cannot start a intent in Android.
这是我的 Android 代码:

WebSettings webSettings = mWebView.getSettings();
    webSettings.setCacheMode(WebSettings.LOAD_NO_CACHE); //no cache
    webSettings.setJavaScriptEnabled(true);
    mWebView.addJavascriptInterface(new WebAppInterface(this), "Android");
    //This method will only be invoked with GET request
    mWebView.setWebViewClient(new WebViewClient(){
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            //Log.d("DEBUG-URL","url:"+url);
            if(url.startsWith(WebView.SCHEME_TEL)){
                Intent intent = new Intent(Intent.ACTION_DIAL,
                        Uri.parse(url));
                startActivity(intent);
                return true;
            }
            view.loadUrl(url);
            return true;
        }
    });  

当我在 WebView 中单击 url 时,net: ERR_UNKNOWN_URL_SCHEME throws.

我添加点击事件,调用event.preventDefault(),然后我使用Ajax GET 请求。此问题已解决。

$("#a_get").on("click",function(event){
                            event.preventDefault();//invalidate
                            $.ajax({
                                   type: "GET",
                                   url: a_href,
                                   success: function(result){

                                   },
                                   error: function(result){

                                   }
                            });
                        });