[JAVA][Android] DatePickerDialog 만들기

안녕하세요

 

오늘은 DatePickerDialog를 만들어 보겠습니다.

 

* 결과

 

 

먼저 아래 스틱코들 링크에서 즐겨찾기 추가를 해주세요

 

https://stickode.com/detail.html?no=2422 

스틱코드

 

 

그러면 아래 사진들처럼 태그만 입력해도 스틱코드 탭이 나옵니다.

 

탭을 누르면 해당 코드가 자동 입력됩니다.

 

---

 

1. MainActivity.java

 

 

import androidx.appcompat.app.AppCompatActivity;
import android.app.DatePickerDialog;
import android.app.TimePickerDialog;
import android.os.Bundle;
import android.view.View;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.TimePicker;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;

public class MainActivity extends AppCompatActivity {

    Calendar myCalendar = Calendar.getInstance();

    DatePickerDialog.OnDateSetListener myDatePicker = new DatePickerDialog.OnDateSetListener() {
        @Override
        public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
            myCalendar.set(Calendar.YEAR, year);
            myCalendar.set(Calendar.MONTH, month);
            myCalendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);
            updateLabel();
        }
    };

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

        EditText et_Date = (EditText) findViewById(R.id.Date);
        et_Date.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                new DatePickerDialog(MainActivity.this, myDatePicker, myCalendar.get(Calendar.YEAR), myCalendar.get(Calendar.MONTH), myCalendar.get(Calendar.DAY_OF_MONTH)).show();
            }
        });

        final EditText et_time = (EditText) findViewById(R.id.Time);
        et_time.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Calendar mcurrentTime = Calendar.getInstance();
                int hour = mcurrentTime.get(Calendar.HOUR_OF_DAY);                //한국시간 : +9
                int minute = mcurrentTime.get(Calendar.MINUTE);
                TimePickerDialog mTimePicker;
                mTimePicker = new TimePickerDialog(MainActivity.this, new TimePickerDialog.OnTimeSetListener() {
                    @Override
                    public void onTimeSet(TimePicker timePicker, int selectedHour, int selectedMinute) {
                        String state = "AM";
                        // 선택한 시간이 12를 넘을경우 "PM"으로 변경 및 -12시간하여 출력 (ex : PM 6시 30분)
                        if (selectedHour > 12) {
                            selectedHour -= 12;
                            state = "PM";
                        }
                        // EditText에 출력할 형식 지정
                        et_time.setText(state + " " + selectedHour + "시 " + selectedMinute + "분");
                    }
                }, hour, minute, false); // true의 경우 24시간 형식의 TimePicker 출현
                mTimePicker.setTitle("Select Time");
                mTimePicker.show();
            }
        });
    }

    private void updateLabel() {
        String myFormat = "yyyy/MM/dd";    // 출력형식   2021/07/26
        SimpleDateFormat sdf = new SimpleDateFormat(myFormat, Locale.KOREA);

        EditText et_date = (EditText) findViewById(R.id.Date);
        et_date.setText(sdf.format(myCalendar.getTime()));
    }

}

 

* 한국 시간으로 변경하고 싶다면 아래 코드 부분에서 +9를 해주세요

                int hour = mcurrentTime.get(Calendar.HOUR_OF_DAY) + 9;                //한국시간 : +9

 

 

2. activity_main.xml

 

 

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <EditText
        android:id="@+id/Date"
        android:layout_width="match_parent"
        android:layout_height="70dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="32dp"
        android:layout_marginEnd="8dp"
        android:gravity="center"
        android:text="Date"
        android:textSize="25sp"
        android:clickable="true"
        android:editable="false"
        android:focusable="false"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <EditText
        android:id="@+id/Time"
        android:layout_width="match_parent"
        android:layout_height="70dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="32dp"
        android:layout_marginEnd="8dp"
        android:gravity="center"
        android:text="Time"
        android:textSize="25sp"
        android:clickable="true"
        android:editable="false"
        android:focusable="false"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/Date" />

</androidx.constraintlayout.widget.ConstraintLayout>