DatePickerDialog

     case R.id.endBtn:

        show();

     break ;

    private void show() {
        //获取当前年月日
        Calendar calendar = Calendar.getInstance();
        int year = calendar.get(Calendar.YEAR);//当前年
        int month = calendar.get(Calendar.MONTH);//当前月
        int day = calendar.get(Calendar.DAY_OF_MONTH);//当前日
        //new一个日期选择对话框的对象,并设置默认显示时间为当前的年月日时间.
        DatePickerDialog dialog = new DatePickerDialog(this, mdateListener, year, month, day);
        dialog.show();
    }

    /**
     * 日期选择的回调监听
     */
    private DatePickerDialog.OnDateSetListener mdateListener = new DatePickerDialog.OnDateSetListener() {
        @Override
        public void onDateSet(DatePicker view, int years, int monthOfYear, int dayOfMonth) {
            Log.i("info", "年" +years+ "月" +monthOfYear+ "日"+dayOfMonth);//这里月份是从0开始的,所以monthOfYear的值是0时就是1月.以此类推,加1就是实际月份了.

        }
    };