在android的app中用WebView实现浏览网页功能

java代码：

       //设置支持js脚本
        webView.getSettings().setJavaScriptEnabled(true); 
        webView.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT);               
        webView.getSettings().setDomStorageEnabled(true);
       //设置进度条
        webView.setWebChromeClient(new WebChromeClient() { 
           @Override
            public void onProgressChanged(WebView view, int newProgress) {
                if (newProgress == 100 && !CoveritLIveActivity.this.isFinishing()) {
                    progressBar.setVisibility(View.INVISIBLE);
                } else {
                    if (View.INVISIBLE == progressBar.getVisibility() && !CoveritLIveActivity.this.isFinishing()) {
                        progressBar.setVisibility(View.VISIBLE); 
                   }
                    progressBar.setProgress(newProgress);
                }
                super.onProgressChanged(view, newProgress);
            }        
});
        // 覆盖webView默认通过系统或者第三方浏览器打开网页的行为
        // 如果为false调用系统或者第三方浏览器打开网页的行为
        webView.setWebViewClient(new WebViewClient() {
            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                // webView加载web资源
                view.loadUrl(url);
                return true;
            }
        });        
webView.loadUrl(Url);
    }

xml代码：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
   android:layout_width="match_parent"
   android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    xmlns:app="http://schemas.android.com/apk/res-auto"    >
    <com.easemob.easeui.widget.EaseTitleBar
        android:id="@+id/title_bar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        app:titleBarLeftImage="@drawable/back"
        app:titleBarTitle="" />
    <ProgressBar
        android:id="@+id/myProgressBar"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="match_parent"
        android:layout_height="5dp"
        android:layout_below="@id/title_bar" />
    <WebView
        android:id="@+id/webView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@id/myProgressBar" />
</RelativeLayout>