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
复制代码 代码如下:
<?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: