이벤트 처리 - 체크박스,버튼

 

 package org.kosta.test;

import android.os.Bundle;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.Toast;
import android.support.v4.app.NavUtils;

@SuppressLint({ "ParserError", "ParserError" })
public class MainActivity extends Activity implements OnClickListener{
 

    @Override
 public void onClick(View v) {
     //체크박스 객체 조회
     CheckBox movieCB = (CheckBox) findViewById(R.id.movieCB);
     CheckBox musicCB = (CheckBox) findViewById(R.id.musicCB);
     CheckBox readringCB = (CheckBox) findViewById(R.id.readingCB);
     StringBuffer sb = new StringBuffer();//선택된 checkbox의 text값을 저장
     
     /*
      * checkbox메소드
      * click() - 체크박스 클릭 효과
      * toggle() - 체크 상태 반대로 처리
      * isChecked() - 체크 여부 조회(true : 체크상태)
      */
     if(movieCB.isChecked()){
      sb.append(movieCB.getText()+" ");
     }
     if(readringCB.isChecked()){
      sb.append(readringCB.getText()+" ");
     }
     if(musicCB.isChecked()){
      sb.append(musicCB.getText()+" ");
     }
     Toast.makeText(this, sb, Toast.LENGTH_SHORT).show();
 }

 @Override
    public void onCreate(Bundle savedInstanceState)  {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        CheckBox chk = (CheckBox)findViewById(R.id.chk);
        Button btn = (Button) findViewById(R.id.btn);
        btn.setOnClickListener(this);
        //CompoundButton.OnCheckedChangeListener
        //익명클래스를 이용해 처리
        chk.setOnCheckedChangeListener(
          new CompoundButton.OnCheckedChangeListener() {
   
   //1 : event 소스, 2 : 체크여부 - true:체크상태
   public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
    if(isChecked){//체크 된 상태
     Toast.makeText(MainActivity.this, "체크됨", Toast.LENGTH_SHORT).show();//1.메인객체 2. 입력글 3. 보여줄 시간
    }else{//체크 해제 상태
     Toast.makeText(MainActivity.this, "체크 해제됨", Toast.LENGTH_SHORT).show();//1.메인객체 2. 입력글 3. 보여줄 시간
    }
   }
  });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

   
}

 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
   
    <CheckBox
        android:id="@+id/chk"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="체크하세요"/>
     <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="선택하세요"/>
     <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
     <CheckBox
         android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="영화"
        android:id="@+id/movieCB"
        />
      <CheckBox
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="독서"
        android:id="@+id/readingCB"
        />
        <CheckBox
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="음악"
        android:id="@+id/musicCB"
        />
     </LinearLayout>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="선택내용 조회"
        android:id="@+id/btn"/>

</LinearLayout>

* 결과