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

package com.android.webview.activity;
import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.webkit.WebView;
public class MainActivity extends Activity {
private WebView webview;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//實例化WebView對象
webview = new WebView(this);
//設(shè)置WebView屬性，能夠執(zhí)行Javascript腳本
webview.getSettings().setJavaScriptEnabled(true);
//加載需要顯示的網(wǎng)頁
webview.loadUrl("http://www.31358.cn/");
//設(shè)置Web視圖
setContentView(webview);
}
@Override
//設(shè)置回退
//覆蓋Activity類的onKeyDown(int keyCoder,KeyEvent event)方法
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && webview.canGoBack()) {
webview.goBack(); //goBack()表示返回WebView的上一頁面
return true;
}
return false;
}

<?xml version="1.0" encoding="utf-8"?>
< manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.android.webview.activity"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="10" />
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".MainActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-permission android:name="android.permission.INTERNET"/>
< /manifest>