阿权的书房

        TabHost mTabHost = getTabHost();
        
        TabHost.TabSpec tab_category = mTabHost.newTabSpec(tab_tag[0]);
        tab_category.setIndicator(tabIndex[0], getResources().getDrawable(R.drawable.ic_tab_selected_contacts));
        tab_category.setContent(R.id.layout_category);
  mTabHost.addTab(tab_category);

//其它tab类似

  //监听tab点击事件
  mTabHost.setOnTabChangedListener(this);

package com.example.android.apis.view;

import android.app.Activity;
import android.os.Bundle;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.view.KeyEvent;
import android.app.AlertDialog;
import android.content.DialogInterface;

public class WebView1 extends Activity {
  private WebView wv;
    private String init_url = "http://www.aslibra.com/android/";
    
    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);      
        setContentView(R.layout.main);
        
        wv = (WebView) findViewById(R.id.wv1);
        //允许运行脚本
        wv.getSettings().setJavaScriptEnabled(true);
        //捕获链接点击
        wv.setWebViewClient(new WebViewClient(){  
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
              //捕获网址，以后也许可以根据锚链接处理点互动
              show_msg(url);
              view.loadUrl(url);  
                return true;
            }
        });  
        wv.loadUrl(init_url);
    }

    public void show_msg(String msg){
      new AlertDialog.Builder(this)
      .setTitle("提示：有链接点击")
      .setMessage(msg)
        /*.setPositiveButton("确定", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {
        }
        })
        .setNegativeButton("取消", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {
        }
        })*/
        .show();      
    }
    
    //防止点击链接后按返回直接回到桌面
    public boolean onKeyDown(int keyCode, KeyEvent event) {  
        if ((keyCode == KeyEvent.KEYCODE_BACK) && wv.canGoBack()) {  
            wv.goBack();  
            return true;  
        }  
        return super.onKeyDown(keyCode, event);  
    }
}

[2009-07-15 00:03:46 - helloAndroid] Android Launch!
[2009-07-15 00:03:46 - helloAndroid] adb is running normally.
[2009-07-15 00:03:46 - helloAndroid] Performing com.android.hello.helloAndroid activity launch
[2009-07-15 00:03:50 - helloAndroid] Launching a new emulator with Virtual Device 'my_avd'
[2009-07-15 00:03:50 - Emulator] emulator: ERROR: unknown virtual device name: 'my_avd'
[2009-07-15 00:03:50 - Emulator] emulator: could not find virtual device named 'my_avd'