java - Android 日期选择器监听器不能工作超过一次..

Question

我有一个 Activity ，其中我有两个日期选择器，首先我通过这些语句初始化它们

    public class birthDate extends Activity{

Calendar c = Calendar.getInstance();
    int currentYear = c.get(Calendar.YEAR); 
    int currentMonth = c.get(Calendar.MONTH);
    int currentDay = c.get(Calendar.DAY_OF_MONTH);
  public void onCreate(Bundle savedInstanceState) 
{

 super.onCreate(savedInstanceState);  

 setContentView(R.layout.birthdate);

    DatePicker birthDayDatePicker,periodDatePicker;
            birthDayDatePicker = (DatePicker)findViewById(R.id.DatePickerBirthDay);
            periodDatePicker = (DatePicker)findViewById(R.id.DatePickerPeriod);
             periodDatePicker.init(currentYear, currentMonth, currentDay, new OnDateChangedListener()
            {

                @Override
                public void onDateChanged(DatePicker arg0, int arg1, int arg2,int arg3) {
                    // TODO Auto-generated method stub
                    birthDateCalculations();
                }
            });

            birthDayDatePicker.init(currentYear, currentMonth, currentDay, new OnDateChangedListener() {

                @Override
                public void onDateChanged(DatePicker arg0, int arg1, int arg2, int arg3) {
                    // TODO Auto-generated method stub

                    periodDateCalculations();

                    }
            });

    }}

我意识到那些监听器只发生了一次，就好像我再次点击了日期选择器一样，语句将不会被应用..我想要一种方法，让监听器在我每次单击日期选择器时都处于 Activity 状态。

提前致谢!

Answer 1

请在 Activity 的oncreate 方法中初始化选择器。