<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent">
  <ImageView android:id="@+id/imageView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:src="@drawable/bulb_off" 
    android:layout_gravity="center_horizontal" />
  <ToggleButton android:id="@+id/toggleButton"
    android:layout_width="140dip"
    android:layout_height="wrap_content"
    android:textOn="开灯"
    android:textOff="关灯"
    android:layout_gravity="center_horizontal" />
</LinearLayout>

package com.ljq.tb;

import android.app.Activity;
import android.os.Bundle;
import android.widget.CompoundButton;
import android.widget.ImageView;
import android.widget.ToggleButton;
import android.widget.CompoundButton.OnCheckedChangeListener;

public class ToggleButtonActivity extends Activity {
  private ImageView imageView=null;
  private ToggleButton toggleButton=null;
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    
    imageView=(ImageView) findViewById(R.id.imageView);
    toggleButton=(ToggleButton)findViewById(R.id.toggleButton);
    toggleButton.setOnCheckedChangeListener(new OnCheckedChangeListener(){

      public void onCheckedChanged(CompoundButton buttonView,
          boolean isChecked) {
        toggleButton.setChecked(isChecked);
        imageView.setImageResource(isChecked?R.drawable.bulb_on:R.drawable.bulb_off);
      }
      
    });
  }
}

<Switch 
    android:id="@+id/open" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:textOff="蓝牙关闭中" 
    android:textOn="蓝牙开启中" /> 

open.setOnCheckedChangeListener(new OnCheckedChangeListener() { 
 
      @Override 
      public void onCheckedChanged(CompoundButton buttonView, 
          boolean isChecked) { 
        // TODO Auto-generated method stub 
        if (isChecked) { 
          mBluetoothAdapter.enable();//打开蓝牙 
        } else { 
          mBluetoothAdapter.disable();// 关闭蓝牙 
        } 
      } 
    });