Android 之电灯泡开关效果

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<?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/ImageView01"
android:src="@drawable/bulb_off"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal">
</ImageView>
<RadioGroup
android:id="@+id/RadioGroup01"
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal">
<RadioButton
android:text="@string/off"
android:id="@+id/off"
android:checked="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</RadioButton>
<RadioButton
android:text="@string/on"
android:id="@+id/on"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</RadioButton>
</RadioGroup>
<CheckBox
android:text="@string/on"
android:id="@+id/CheckBox01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal">
</CheckBox>
</LinearLayout>

package com.ethan;
import android.app.Activity;
import android.os.Bundle;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ImageView;
import android.widget.RadioButton;
public class BulbActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
CheckBox cb=(CheckBox)this.findViewById(R.id.CheckBox01);
cb.setOnCheckedChangeListener(new OnCheckedChangeListener(){//为CheckBox添加监听器及开关灯业务代码
@Override
public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
setBulbState(isChecked);
}
});
RadioButton rb=(RadioButton)findViewById(R.id.off);
rb.setOnCheckedChangeListener(new OnCheckedChangeListener(){ //为RadioButton添加监听器及开关灯业务代码
@Override
public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
setBulbState(!isChecked);
}
});
}
//方法：设置程序状态的
public void setBulbState(boolean state){
//设置图片状态
ImageView iv=(ImageView)findViewById(R.id.ImageView01);
iv.setImageResource((state)?R.drawable.bulb_on:R.drawable.bulb_off);
CheckBox cb=(CheckBox)this.findViewById(R.id.CheckBox01);
cb.setText((state)?R.string.off:R.string.on);
cb.setChecked(state); //设置复选框文字状态
RadioButton rb=(RadioButton)findViewById(R.id.off);
rb.setChecked(!state);
rb=(RadioButton)findViewById(R.id.on);
rb.setChecked(state); //设置单选按钮状态
}
}