Android控件之ToggleButton探究

ToggleButton的状态只能是选中和未选中，并且需要为不同的状态设置不同的显示文本。

以下案例为ToggleButton的用法

目录结构

main.xml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);
 }
 
 });
 }
}
  
    

运行效果：