在 DatePickerDialog 中以数字格式而不是字母顺序显示月份字段

下图显示了我在 Android 应用程序中的当前日期选择器，但是我想将所有月份显示为 01、02、03...12，而不是一月、二月、三月...十二月。

任何帮助将不胜感激！！

你可以自己设计Dialog with NumberPicker，但如果你仍然想使用DatePickerDialog，这应该有效：

DatePickerDialog mDatePicker = new DatePickerDialog(MainActivity.this, android.R.style.Theme_Holo_Light_Dialog, new DatePickerDialog.OnDateSetListener() {
    public void onDateSet(DatePicker view, int selectedyear, int selectedmonth, int selectedday) {
        // Stuff
    }
}, mYear, mMonth, mDayOfMonth) {

    final int month = getContext().getResources().getIdentifier("android:id/month", null, null);
    final String[] monthNumbers = new String[]{ "01","02","03","04","05","06","07","08","09","10","11","12"}

    @Override
    public void onDateChanged(@NonNull DatePicker view, int y, int m, int d) {
        super.onDateChanged(view, y, m, d);
        // Since DatePickerCalendarDelegate updates the month spinner too, we need to change months as numbers here also
        if(month != 0){
            NumberPicker monthPicker = findViewById(month);
            if(monthPicker != null){
                monthPicker.setDisplayedValues(monthNumbers);
            }
        }
    }

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        // Hide day spinner
        int day = getContext().getResources().getIdentifier("android:id/day", null, null);
        if(day != 0){
            NumberPicker dayPicker = findViewById(day);
            if(dayPicker != null){
                dayPicker.setVisibility(View.GONE);
            }
        }
        // Show months as Numbers
        if(month != 0){
            NumberPicker monthPicker = findViewById(month);
            if(monthPicker != null){
                monthPicker.setDisplayedValues(monthNumbers);
            }
        }
    }
};
mDatePicker.setTitle("Select Date");
mDatePicker.show();