Android 控件开发之ToggleButton

<?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"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"/>

<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.sx.ToggleButton;

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

public class ToggleButtonActivity extends Activity
{

private  ImageView imageView=null;
private ToggleButton toggleButton=null;

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);

}

});

}

}