DatePickerDialog/TimePickerDialog 알아보기

DatePickerDialog

- 날짜 정보를 보여준다.

TimePickerDialog

- 시간 정보를 보여준다.

 

각자 TIME 과 DATE 버튼을 눌렀을 때 PickerDialog가 동작하여 시간/날짜 설정후 TextView로 보여주는 과정

 

 

xml에서 android:onClick="mOnClick"을 넣어줘야 함

<?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">

    <TextView
        android:id="@+id/textResult"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Result"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <Button
        android:id="@+id/btnSelectData"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="91dp"
        android:text="Date"
        android:onClick="mOnClick"
        app:layout_constraintBaseline_toBaselineOf="@+id/btnSelectTime"
        app:layout_constraintEnd_toEndOf="parent" />

    <Button
        android:id="@+id/btnSelectTime"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="44dp"
        android:layout_marginEnd="44dp"
        android:text="Time"

        android:onClick="mOnClick"
        app:layout_constraintEnd_toStartOf="@+id/btnSelectData"
        app:layout_constraintTop_toBottomOf="@+id/textResult" />

</androidx.constraintlayout.widget.ConstraintLayout>

 

updateResult()함수를 통해 textView에 결과값을 나타낸다.

public class MainActivity extends AppCompatActivity {

    private String mStrDate ="date";
    private String mStrTime ="time";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        updateResult();
        Button btnDate = (Button)findViewById(R.id.btnSelectData);
        Button btnTime = (Button)findViewById(R.id.btnSelectTime);
    }

    private void updateResult(){
        TextView textResult = (TextView)findViewById(R.id.textResult);
        textResult.setText("날짜 : "+mStrDate +"\n"+ "시간 : "+mStrTime);
    }
    public void mOnClick(View v){
        Calendar calendar = Calendar.getInstance();
        switch (v.getId()){
            case R.id.btnSelectData:
                int year = calendar.get(Calendar.YEAR);
                int month = calendar.get(Calendar.MONTH);
                int day = calendar.get(Calendar.DAY_OF_MONTH);
                new DatePickerDialog(this,mDateSetListener,year,month,day).show();
                break;
            case R.id.btnSelectTime:
                int hour = calendar.get(Calendar.HOUR_OF_DAY);
                int minute = calendar.get(Calendar.MINUTE);
                new TimePickerDialog(this,mTimeSetListener,hour,minute,true).show();
                break;
        }
    }
    private DatePickerDialog.OnDateSetListener mDateSetListener = new DatePickerDialog.OnDateSetListener(){

        @Override
        public void onDateSet(DatePicker datePicker, int year, int month, int dayOfMonth) {
            mStrDate = String.format("%d년 %d월 %d일",year,month+1,dayOfMonth);
            updateResult();
        }
    };
    private TimePickerDialog.OnTimeSetListener mTimeSetListener = new TimePickerDialog.OnTimeSetListener() {
        @Override
        public void onTimeSet(TimePicker timePicker, int hourOfDay, int minute) {
                  mStrTime= String.format("%d시 %d분",hourOfDay,minute);
                  updateResult();
        }
    };

}

 

 

처음 실행 모습

 

 

TIME버튼 눌렀을 때

 

 

 

DATE버튼 눌렀을 때

 

 

바뀐 TextView