我有一个DatePickerDialog，我想只查看月份和年份。我可以改变这个code？ 谢谢

 公共无效chooseDate2（视图v）{
    新DatePickerDialog（act.this，D1，
                          dateAndTime1.get（Calendar.YEAR）+ 2，
                         dateAndTime1.get（Calendar.MONTH）
                         dateAndTime1.get（Calendar.DAY_OF_MONTH））
      。显示（）;
  }
  私人无效updateLabel2（）{
    scadenza.setText（fmtDateAndTime.format（dateAndTime1.getTime（）））;
  }
  DatePickerDialog.OnDateSetListener D1 =新DatePickerDialog.OnDateSetListener（）{
    公共无效onDateSet（DatePicker的观点，年整型，诠释monthOfYear，诠释DAYOFMONTH）{
        dateAndTime1.set（Calendar.YEAR，一年）;
      dateAndTime1.set（Calendar.MONTH，monthOfYear）;
     dateAndTime1.set（Calendar.DAY_OF_MONTH，DAYOFMONTH）;
      updateLabel2（）;
    }
  };
 

解决方案

请尝试以下code。它会显示一个的DatePicker 只有年和月（不含当天）

 私人DatePickerDialog createDialogWithoutDateField（）{
        DatePickerDialog DPD =新DatePickerDialog（本，空，2014年，1，24）;
        尝试 {
            java.lang.reflect.Field中的[] datePickerDialogFields = dpd.getClass（）getDeclaredFields（）。
            对于（java.lang.reflect.Field中datePickerDialogField：datePickerDialogFields）{
                如果（datePickerDialogField.getName（）。等于（mDatePicker））{
                    datePickerDialogField.setAccessible（真正的）;
                    DatePicker的日期选择器=（DatePicker的）datePickerDialogField.get（DPD）;
                    java.lang.reflect.Field中的[] datePickerFields = datePickerDialogField.getType（）getDeclaredFields（）。
                    对于（java.lang.reflect.Field中datePickerField：datePickerFields）{
                        Log.i（测试，datePickerField.getName（））;
                        如果（mDaySpinner.equals（datePickerField.getName（）））{
                            datePickerField.setAccessible（真正的）;
                            对象dayPicker = datePickerField.get（日期选择器）;
                            （（查看）dayPicker）.setVisibility（View.GONE）;
                        }
                    }
                }
            }
        }
        赶上（例外前）{
        }
        返回DPD;
    }
 

该方法返回一个日期选择器对话框。所以，在你的按钮的的onClick 方法中添加以下code，以显示你的对话框。

  createDialogWithoutDateField（）显示（）;
 

I have a DatePickerDialog and I want view only Month and Year. Can I change this code? Thanks

public void chooseDate2(View v) {
    new DatePickerDialog(act.this, d1,
                          dateAndTime1.get(Calendar.YEAR) + 2,
                         dateAndTime1.get(Calendar.MONTH),
                         dateAndTime1.get(Calendar.DAY_OF_MONTH))
      .show();
  }
  private void updateLabel2() {
    scadenza.setText(fmtDateAndTime.format(dateAndTime1.getTime()));           
  }
  DatePickerDialog.OnDateSetListener d1=new DatePickerDialog.OnDateSetListener() {
    public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
        dateAndTime1.set(Calendar.YEAR, year);
      dateAndTime1.set(Calendar.MONTH, monthOfYear);
     dateAndTime1.set(Calendar.DAY_OF_MONTH, dayOfMonth);
      updateLabel2();
    }
  };

Try the following code. It will show a DatePicker with only the year and month (without day)

private DatePickerDialog createDialogWithoutDateField() {
        DatePickerDialog dpd = new DatePickerDialog(this, null, 2014, 1, 24);
        try {
            java.lang.reflect.Field[] datePickerDialogFields = dpd.getClass().getDeclaredFields();
            for (java.lang.reflect.Field datePickerDialogField : datePickerDialogFields) {
                if (datePickerDialogField.getName().equals("mDatePicker")) {
                    datePickerDialogField.setAccessible(true);
                    DatePicker datePicker = (DatePicker) datePickerDialogField.get(dpd);
                    java.lang.reflect.Field[] datePickerFields = datePickerDialogField.getType().getDeclaredFields();
                    for (java.lang.reflect.Field datePickerField : datePickerFields) {
                        Log.i("test", datePickerField.getName());
                        if ("mDaySpinner".equals(datePickerField.getName())) {
                            datePickerField.setAccessible(true);
                            Object dayPicker = datePickerField.get(datePicker);
                            ((View) dayPicker).setVisibility(View.GONE);
                        }
                    }
                }
            }
        } 
        catch (Exception ex) {
        }
        return dpd;
    }

This method returns a date picker dialog. So , in your button's onClick method add the following code to display your dialog.

createDialogWithoutDateField().show();