기본적으로 초록색 이미지와 Radio 버튼 3개가 보이도록 레이아웃을 잡았습니다.

그런후에 버튼 변경시 이미지 색이 변경 되도록 해봤습니다. ㅋㅋ

 

// HelloAppActivity.java

package com.home;

 

import android.app.Activity;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.RadioGroup;

public class HelloAppActivity extends Activity
implements RadioGroup.OnCheckedChangeListener
{
    /** Called when the activity is first created. */
 
 RadioGroup orientation;
 ImageView img;
 Drawable defaultImg;
 Drawable blueImg;
 Drawable redImg;
 
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       

        img = (ImageView)findViewById(R.id.imageView1);
       
        // 이 부분을 몰라서 엄청 헤맷네욤 
        defaultImg = getResources().getDrawable(R.drawable.android_icon_125g);
        blueImg = getResources().getDrawable(R.drawable.android_icon_125b);
        redImg = getResources().getDrawable(R.drawable.android_icon_125r);
       
        orientation = (RadioGroup)findViewById(R.id.radioGroup1);
        orientation.setOnCheckedChangeListener(this);
    }
   
    public void onCheckedChanged(RadioGroup group, int checkedId)
    {
     if(group == orientation)
     {
   switch(checkedId)
   {
    case R.id.radio0: 
     img.setImageDrawable(defaultImg);
     break;
    case R.id.radio1:  
     img.setImageDrawable(blueImg);
     break;
    case R.id.radio2:
     img.setImageDrawable(redImg);
     break;
   }
     }
    }   
}

 

 

 

// main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Radio Button 선택하세요 !!" />

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/android_icon_125g" />

    <RadioGroup
        android:id="@+id/radioGroup1"
        android:orientation="horizontal"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >
       

        <RadioButton
            android:id="@+id/radio0"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:checked="true"
            android:textColor="#FF00FF00"
            android:text="Green" />

        <RadioButton
            android:id="@+id/radio1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="#FF0000FF"
            android:text="Blue" />

        <RadioButton
            android:id="@+id/radio2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="#FFFF0000"
            android:text="Red" />
    </RadioGroup>

</LinearLayout>