在Android中,要使用内置的浏览器,需要通过WebView组件来实现,核心是开源WebKit引擎。

WebView是专门用来浏览网页的,既可以在XML文件中使用<WebView>标记添加,又可以在Java文件中通过new关键字创建,推荐使用XML方法。



WebView最简单的应用就是在布局文件中定义一个WebView组件,在程序代码中实例化组件,并调用其loadUrl方法,传入需要访问的地址即可。


步骤:

1.布局文件中定义WebView

2.实例化WebView

WebView webview=(WebView)findviewbyId(R.id.xxx);

webview.loadUrl("www.baidu.com");


3.别忘了在清单文件中加入权限

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




下面是一个有趣又简单的浏览器实例:



WebGo.java代码:

(使用了GridView,详细GridView代码不再给出)



public class WebGo extends Activity {

public static String flag="id";

GridView gridview;

int[] p_w_picpaths=new int[]{R.drawable.neihanshequ,R.drawable.wangyi,R.drawable.kuailemahua,R.drawable.baidu,R.drawable.taobao,R.drawable.kuaidi,

R.drawable.pengfu,R.drawable.shenmasousuo,R.drawable.manhua,R.drawable.xiaohua,R.drawable.wenti,R.drawable.jiuyou,R.drawable.jiuyou,R.drawable.yxlm,R.drawable.logo17173};

String[] titles=new String[]{"内涵段子","网易新闻","快乐麻花","百度一下","逛淘宝","查快递","捧腹网","神马搜索","最火漫画","经典搞笑","脑筋急转弯","今日新服","免费单机","游戏资讯","17173主页"};

String string1="http://m.neihanshequ.com";

String string2="http://3g.163.com/touch/";

String string3="http://m.mahua.com";

String string4="http://m.baidu.com/?from=2001a";

String string5="http://m.taobao.com";

String string6="http://m.kuaidi100.com";

String string7="http://m.pengfu.com";

String string8="http://m.sa.sm.cn";

String string9="http://m。dmzj。com";

String string10="http://info.3g.qq.com";

String string11="http://m.xuexila。com/jzw/";

String string12="http://a.9game.cn/xinfu/";

String string13="http://a.9game.cn/danji2/";

String string14="http://m.baidu.com";

String string15="http://m.17173.com";

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.webgo);

gridview=(GridView)findViewById(R.id.gv1);

PictureAdapter2 adapter=new PictureAdapter2(titles,p_w_picpaths,this);

gridview.setAdapter(adapter);

gridview.setOnItemClickListener(new OnItemClickListener() {


@Override

public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,

long arg3) {

Intent intent=null;

switch(arg2){

case 0:intent=new Intent(WebGo.this,WebGoOn.class);

intent.putExtra(flag, string1);

startActivity(intent);

finish();

break;

case 1:intent=new Intent(WebGo.this,WebGoOn.class);

intent.putExtra(flag, string2);

startActivity(intent);

finish();

break;

case 2:intent=new Intent(WebGo.this,WebGoOn.class);

intent.putExtra(flag, string3);

startActivity(intent);

finish();

break;

case 3:intent=new Intent(WebGo.this,WebGoOn.class);

intent.putExtra(flag, string4);

startActivity(intent);

finish();

break;

case 4:intent=new Intent(WebGo.this,WebGoOn.class);

intent.putExtra(flag, string5);

startActivity(intent);

finish();

break;

case 5:intent=new Intent(WebGo.this,WebGoOn.class);

intent.putExtra(flag, string6);

startActivity(intent);

finish();

break;

case 6:intent=new Intent(WebGo.this,WebGoOn.class);

intent.putExtra(flag, string7);

startActivity(intent);

finish();

break;

case 7:intent=new Intent(WebGo.this,WebGoOn.class);

intent.putExtra(flag, string8);

startActivity(intent);

finish();

break;

case 8:intent=new Intent(WebGo.this,WebGoOn.class);

intent.putExtra(flag, string9);

startActivity(intent);

finish();

break;

case 9:intent=new Intent(WebGo.this,WebGoOn.class);

intent.putExtra(flag, string10);

startActivity(intent);

finish();

break;

case 10:intent=new Intent(WebGo.this,WebGoOn.class);

intent.putExtra(flag, string11);

startActivity(intent);

finish();

break;

case 11:intent=new Intent(WebGo.this,WebGoOn.class);

intent.putExtra(flag, string12);

startActivity(intent);

finish();

break;

case 12:intent=new Intent(WebGo.this,WebGoOn.class);

intent.putExtra(flag, string13);

startActivity(intent);

finish();

break;

case 13:intent=new Intent(WebGo.this,WebGoOn.class);

intent.putExtra(flag, string14);

startActivity(intent);

finish();

break;

case 14:intent=new Intent(WebGo.this,WebGoOn.class);

intent.putExtra(flag, string15);

startActivity(intent);

finish();

break;

}

}

});

}

public boolean onKeyDown(int KeyCode,KeyEvent Event){


if(KeyCode==KeyEvent.KEYCODE_BACK){

Intent intent=new Intent(WebGo.this,MainActivity.class);

startActivity(intent);

finish();

}

return true;

}

}





WebGoOn.java代码:



public class WebGoOn extends Activity {


private WebView webview;

private ImageButton p_w_picpathbutton1,p_w_picpathbutton2,p_w_picpathbutton3;

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.webgoon);

p_w_picpathbutton1=(ImageButton)findViewById(R.id.imgbtn1);

p_w_picpathbutton2=(ImageButton)findViewById(R.id.imgbtn2);

p_w_picpathbutton3=(ImageButton)findViewById(R.id.imgbtn3);

webview=(WebView)findViewById(R.id.webView1);

webview.getSettings().setJavaScriptEnabled(true);

webview.setWebChromeClient(new WebChromeClient());

webview.setWebViewClient(new WebViewClient());

Intent intent=getIntent();

Bundle bundle=intent.getExtras();

String string=bundle.getString(WebGo.flag);

webview.loadUrl(string);

p_w_picpathbutton1.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

webview.goBack();

}

});

p_w_picpathbutton3.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

Intent intent=new Intent(WebGoOn.this,WebGo.class);

startActivity(intent);

finish();

}

});

p_w_picpathbutton2.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

webview.goForward();

}

});

}

public boolean onKeyDown(int KeyCode,KeyEvent Event){


if(KeyCode==KeyEvent.KEYCODE_BACK){

webview.goBack();

}

return true;

}

}






webgoon.xml代码:




<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical"

android:background="#cccccc" >


<RelativeLayout

android:layout_width="match_parent"

android:layout_height="match_parent" >


<WebView

android:id="@+id/webView1"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:layout_above="@+id/imgbtn1" />


<ImageButton

android:id="@+id/imgbtn1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentBottom="true"

android:layout_alignParentLeft="true"

android:src="@drawable/back" />


<ImageButton

android:id="@+id/imgbtn2"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentBottom="true"

android:layout_alignParentRight="true"

android:src="@drawable/go" />


<ImageButton

android:id="@+id/imgbtn3"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentBottom="true"

android:layout_centerHorizontal="true"

android:src="@drawable/end" />


</RelativeLayout>


</LinearLayout>




主要代码就是这些,效果图如下:




很简的。