打开日期选择器从今天开始选择日期前的日期对话框

Question

我想打开日期选择器对话框，显示从今天起的上一个日期。因为我必须选择出生日期。 这不会显示即将到来的日子，月和年。

这是可能的android？

Answer 1

public class DatePickerFragment extends DialogFragment implements 
      DatePickerDialog.OnDateSetListener { 

     @Override 
     public Dialog onCreateDialog(Bundle savedInstanceState) { 
      // Use the current date as the default date in the picker 
      final Calendar c = Calendar.getInstance(); 
      c.add(Calendar.DAY_OF_MONTH, -1); 
      int year = c.get(Calendar.YEAR); 
      int month = c.get(Calendar.MONTH); 
      int day = c.get(Calendar.DAY_OF_MONTH); 

      // Create a new instance of DatePickerDialog and return it 
      DatePickerDialog dp = new DatePickerDialog(getActivity(), this, year, month, day); 
      dp.getDatePicker().setMaxDate(System.currentTimeMillis()-(24*60*60*1000)); 
      return dp; 
     } 

     public void onDateSet(DatePicker view, int year, int month, int day) { 
      // Do something with the date chosen by the user 
     } 
    } 

显示的日期选择器：

public void showDatePickerDialog() { 
    DialogFragment newFragment = new DatePickerFragment(); 
    newFragment.show(getSupportFragmentManager(), "datePicker"); 
} 

欲了解更多信息，请访问：http://developer.android.com/guide/topics/ui/controls/pickers.html#DatePicker

Answer 2

技巧：

final Calendar calendar = Calendar.getInstance(); 
    try { 
     calendar.add(Calendar.DAY_OF_MONTH, -1);//show previous date from today 
     DatePickerDialog dialog = new DatePickerDialog(this, 
       new OnDateSetListener() { 

        @Override 
        public void onDateSet(DatePicker view, int year, 
          int monthOfYear, int dayOfMonth) { 
         // TODO Auto-generated method stub 
         calendar.set(Calendar.YEAR, year); 
         calendar.set(Calendar.MONTH, monthOfYear); 
         calendar.set(Calendar.DAY_OF_MONTH, dayOfMonth); 
         tv.setText(formatDate(calendar.getTime())); 
        } 
       }, calendar.get(Calendar.YEAR), 
       calendar.get(Calendar.MONTH), 
       calendar.get(Calendar.DAY_OF_MONTH)); 
     dialog.show(); 
    } catch (ParseException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    }