(1) activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<CheckBox
android:id="@+id/chk1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true"
android:text="@string/font1"
android:layout_alignParentTop="true"
/>
android:id="@+id/colors"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/chk1"
android:orientation="vertical" >
<RadioButton
android:id="@+id/rgRed"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/red"
android:checked="true"
/>
<RadioButton
android:id="@+id/rgBlue"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/blue"
/>
<RadioButton
android:id="@+id/rgGreen"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/green"
/>
</RadioGroup>
<TextView android:id="@+id/txt1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="@string/mymsg"
android:textSize="20pt"
android:textColor="#ff0000"
/>
</RelativeLayout>
(2) string.xml ( values폴더 )
<resources>
<string name="app_name">Test04</string>
<string name="mymsg">Happy Day!</string>
<string name="font1">글씨 크게</string>
<string name="red">빨강</string>
<string name="blue">파랑</string>
<string name="green">초록</string>
</resources>
(3) MainActivity.java
package com.example.test04;
import android.os.Bundle;
import android.app.Activity;
import android.graphics.Color;
import android.view.Menu;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.RadioGroup;
import android.widget.TextView;
public class MainActivity extends Activity {
CheckBox chk1;
TextView txt1;
RadioGroup rg;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//텍스트뷰, 체크박스에 대한 참조값 얻어오기.
chk1 = (CheckBox)findViewById(R.id.chk1);
txt1 = (TextView)findViewById(R.id.txt1);
rg=(RadioGroup)findViewById(R.id.colors);
chk1.setOnCheckedChangeListener( new OnCheckedChangeListener() {
//체크박스를 클랙해서 체크상태가 바뀔때마다 자동 호출
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
//이벤트가 발생된 컴포넌트 id가 chk1이라면
if(buttonView.getId()==R.id.chk1){
if(isChecked){//체크된 상태라면
txt1.setTextSize(40);//텍스트뷰 사이즈 변경
}else{
txt1.setTextSize(20);
}
}
}
});
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
//체크가 된 radio button 아이디
switch(checkedId){
//textView의 색상 바꾸기.
case R.id.rgRed:
txt1.setTextColor(Color.RED);break;
case R.id.rgBlue:
txt1.setTextColor(Color.BLUE);break;
case R.id.rgGreen:
txt1.setTextColor(Color.GREEN);break;
}
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
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