[Java] enum

Day.java

package com.jwsoft.javaproject;

enum Day {
    Monday,
    Tuesday,
    Wednesday,
    Thursday,
    Friday,
    Saturday,
    Sunday
}

 

 

 

 

 

 

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    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"
    android:orientation="vertical"
    android:gravity="center"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/btnMonday"
        android:layout_width="200dp"
        android:layout_height="70dp"
        android:textAllCaps="false"
        android:text="Monday"
        android:textSize="20dp"
        android:textStyle="bold|italic"
        android:onClick="onClick"/>

    <Button
        android:id="@+id/btnTuesday"
        android:layout_width="200dp"
        android:layout_height="70dp"
        android:textAllCaps="false"
        android:text="Tuesday"
        android:textSize="20dp"
        android:textStyle="bold|italic"
        android:onClick="onClick"/>

    <Button
        android:id="@+id/btnWednesday"
        android:layout_width="200dp"
        android:layout_height="70dp"
        android:textAllCaps="false"
        android:text="Wednesday"
        android:textSize="20dp"
        android:textStyle="bold|italic"
        android:onClick="onClick"/>

    <Button
        android:id="@+id/btnThursday"
        android:layout_width="200dp"
        android:layout_height="70dp"
        android:textAllCaps="false"
        android:text="Thursday"
        android:textSize="20dp"
        android:textStyle="bold|italic"
        android:onClick="onClick"/>

    <Button
        android:id="@+id/btnFriday"
        android:layout_width="200dp"
        android:layout_height="70dp"
        android:textAllCaps="false"
        android:text="Friday"
        android:textSize="20dp"
        android:textStyle="bold|italic"
        android:onClick="onClick"/>

    <Button
        android:id="@+id/btnSaturday"
        android:layout_width="200dp"
        android:layout_height="70dp"
        android:textAllCaps="false"
        android:text="Saturday"
        android:textSize="20dp"
        android:textStyle="bold|italic"
        android:onClick="onClick"/>

    <Button
        android:id="@+id/btnSunday"
        android:layout_width="200dp"
        android:layout_height="70dp"
        android:textAllCaps="false"
        android:text="Sunday"
        android:textSize="20dp"
        android:textStyle="bold|italic"
        android:onClick="onClick"/>

</LinearLayout>

 

 

 

 

 

 

 

MainActivity.java

package com.jwsoft.javaproject;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private Day day;

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

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.btnMonday: {
                day = Day.Monday;
                break;
            }
            case R.id.btnTuesday: {
                day = Day.Tuesday;
                break;
            }
            case R.id.btnWednesday: {
                day = Day.Wednesday;
                break;
            }
            case R.id.btnThursday: {
                day = Day.Thursday;
                break;
            }
            case R.id.btnFriday: {
                day = Day.Friday;
                break;
            }
            case R.id.btnSaturday: {
                day = Day.Saturday;
                break;
            }
            case R.id.btnSunday: {
                day = Day.Sunday;
                break;
            }
            default:
                break;
        }

        Toast.makeText(getApplicationContext(), day.toString(), Toast.LENGTH_SHORT).show();
    }

}

실행 결과