안드로이드 앱 만들기2

조건: 체크박스를 선택할 때 마다 버튼의 속성이 설정되도록 프로젝트를 작성하시오.

xml source

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.ryan.study2.MainActivity">


    <CheckBox
        android:id="@+id/checkBox1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Enable 속성" />

    <CheckBox
        android:id="@+id/checkBox2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Clickable 속성" />

    <CheckBox
        android:id="@+id/checkBox3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="45도 회전" />

    <Button
        android:layout_marginTop="120dp"
        android:id="@+id/button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Button" />
</LinearLayout>

java source

package com.example.ryan.study2;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;

public class MainActivity extends AppCompatActivity {

    CheckBox checkBox1, checkBox2,checkBox3;
    Button btn;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);



        checkBox1 =(CheckBox)findViewById(R.id.checkBox1);
        checkBox2 = (CheckBox)findViewById(R.id.checkBox2);
        checkBox3 = (CheckBox)findViewById(R.id.checkBox3);

        btn = (Button) findViewById(R.id.button);

        checkBox3.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
                if(checkBox3.isChecked()==true){
                    btn.setRotation(45);
                } else
                    btn.setRotation(0);
            }
        });

        checkBox1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
                if(checkBox1.isChecked()==true){
                    btn.setEnabled(true);
                } else
                    btn.setEnabled(false);
            }
        });

        checkBox2.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
                if(checkBox2.isChecked()==true){
                    btn.setClickable(true);
                } else btn.setClickable(false);
            }
        });



    }
}