时间日期选择器DatePickerDialog（简单好用）

Calendar calendar = Calendar.getInstance();
                new DatePickerDialog(AddCertificationActivity.this, new DatePickerDialog.OnDateSetListener() {
                    @Override
                    public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
                        String text = year + "-" + (month + 1) + "-" + dayOfMonth;
                        timeEdt.setText(text);
                    }
                }
                        , calendar.get(Calendar.YEAR)
                        , calendar.get(Calendar.MONTH)
                        , calendar.get(Calendar.DAY_OF_MONTH)).show();