DatePickerDialog 사용하기- doitmission05

public class MainActivity extends AppCompatActivity {

    private TextView editText,editText2,editText3;
    private Date currentDate;
    private int iYear,iMonth,iDay;

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

        editText = (TextView) findViewById(R.id.editText);
        editText2 = (TextView) findViewById(R.id.editText2);
        editText3 = (TextView) findViewById(R.id.editText3);

        getDateToday();
    }

    protected void getDateToday(){
        currentDate = new Date();
        SimpleDateFormat sdfYear = new SimpleDateFormat("yyyy");
        SimpleDateFormat sdfMon = new SimpleDateFormat("MM");
        SimpleDateFormat sdfDay = new SimpleDateFormat("dd");

        editText3.setText(sdfYear.format(currentDate)+"년"+sdfMon.format(currentDate)+"월"+sdfDay.format(currentDate)+"일");
    }

    protected void updateEditText(){
        StringBuffer sb = new StringBuffer();
        editText3.setText(sb.append(iYear+"년").append((iMonth+1) + "월").append(iDay+"일")
        );
    }

    DatePickerDialog.OnDateSetListener dateSetListener = new DatePickerDialog.OnDateSetListener(){
        @Override
        public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
            iYear = year;
            iMonth = monthOfYear;
            iDay = dayOfMonth;
            updateEditText();
        }
    };

    public void onText3Clicked(View v) {

        String strDate = editText3.getText().toString();
        strDate=strDate.replace("년","/").replace("월","/").replace("일","/");

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd/");
        try{
            Date pickDate = new Date(strDate);
            Calendar cal = Calendar.getInstance();
            cal.setTime(pickDate);
            Dialog dia = null;
            //strDate값을 기본값으로 날짜 선택 다이얼로그 생성
            dia =new DatePickerDialog(this, dateSetListener,cal.get(Calendar.YEAR),cal.get(Calendar.MONTH),cal.get(Calendar.DAY_OF_MONTH));
            dia.show();
        }catch(Exception e){
            e.printStackTrace();
        }
    }

    public void onButtonClicked(View v) {
        try {
            Toast toastView = Toast.makeText(this,
                    "이름:"+editText.getText().toString()+"/나이:"+editText2.getText().toString()+"/생년월일:"+editText3.getText().toString(),
                    Toast.LENGTH_LONG);

            toastView.show();

        } catch (NumberFormatException ex) {
            Toast.makeText(this, ex.getMessage(), Toast.LENGTH_LONG).show();
        }
    }
}