Android控件--ToggleButton学习

ToggleButton有两种状态：选中和未选择状态，并且需要为不同的状态设置不同的显示文本。首先先看一下效果：

下面看一下ToggleButton的用法（相关的代码）：

main.xml的布局文件

<? 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 >

ToggleButtonActivity类

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);
}

});
}
}