WebView加载网页及进度条

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ProgressBar;

public class WedActivity extends AppCompatActivity {

private ProgressBar progressBar;
private WebView webView;

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

}
private void initview() {
webView = (WebView) findViewById(R.id.wed);
progressBar = (ProgressBar) findViewById(R.id.prog);
Intent intent = getIntent();
String url = intent.getStringExtra("url");

webView.loadUrl(url);
}
private void shezh() {
WebSettings seting = webView.getSettings();
seting.setJavaScriptEnabled(true);//设置webview支持javascript脚本

// 覆盖WebView默认使用第三方或系统默认浏览器打开网页的行为，使网页用WebView打开
webView.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
// TODO Auto-generated method stub
//返回值是true的时候控制去WebView打开，为false调用系统浏览器或第三方浏览器
view.loadUrl(url);
return true;
}
});
webView.setWebChromeClient(new WebChromeClient() {
@Override
public void onProgressChanged(WebView view, int newProgress) {
// TODO Auto-generated method stub
if (newProgress == 100) {
// 网页加载完成
progressBar.setVisibility(View.GONE);//加载完网页进度条消失
} else {
// 加载中
progressBar.setVisibility(View.VISIBLE);//开始加载网页时显示进度条
progressBar.setProgress(newProgress);//设置进度值
}

}
});
}

}

//布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_wed"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.lenovo.yuekaomoni.WedActivity">
<ProgressBar
android:id="@+id/prog"
android:layout_width="match_parent"
android:layout_height="10dp"
android:max="100"
style="?android:attr/progressBarStyleHorizontal"/>

<WebView
android:id="@+id/wed"
android:layout_below="@+id/prog"
android:layout_width="match_parent"
android:layout_height="match_parent"></WebView>
</RelativeLayout>

<uses-permission android:name="android.permission.INTERNET" />