I don't recommend using Reflection to do this kind of thing.
There is a simpler and more pretty way to do so:
((ViewGroup) datePickerDialog.getDatePicker()).findViewById(Resources.getSystem().getIdentifier("day", "id", "android")).setVisibility(View.GONE);
Be aware that .getDatePicker() method from DatePickerDialog works on API LEVEL >= 11.
Private DatePickerDialog createDialogWithoutDateField(){
DatePickerDialog dpd = new DatePickerDialog(_activity, ExpiryDateSetListener,cyear,cmonth, cday);
try{
Field[] datePickerDialogFields = dpd.getClass().getDeclaredFields();
for (Field datePickerDialogField : datePickerDialogFields) {
if (datePickerDialogField.getName().equals("mDatePicker")) {
datePickerDialogField.setAccessible(true);
DatePicker datePicker = (DatePicker) datePickerDialogField.get(dpd);
Field datePickerFields[] = datePickerDialogField.getType().getDeclaredFields();
for (Field datePickerField : datePickerFields) {
if ("mDayPicker".equals(datePickerField.getName())) {
datePickerField.setAccessible(true);
Object dayPicker = new Object();
dayPicker = datePickerField.get(datePicker);
((View) dayPicker).setVisibility(View.GONE);
}
}
}
}
}catch(Exception ex){
}
return dpd;
}
Use the above code for hiding the day field in DatePickerDialog.
Refer this LINK
The source code to DatePicker and DatePickerDialog are available for you to clone, refactor into your own package, and modify to suit.
private Calendar mCalendar;
mCalendar = Calendar.getInstance();// Initialize Calendar
dialog_date_picker.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/rounded_corners"
android:orientation="vertical"
android:padding="8dp">
<DatePicker
android:id="@+id/date_picker"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="4"
android:calendarViewShown="false"
android:datePickerMode="spinner" />
<Button
android:id="@+id/date_time_set"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@color/colorPrimary"
android:text="Set"
android:textColor="@color/colorWhite" /></LinearLayout>
DialogMethod called on Click:
private void ExpiryDialog() {
System.out.println("Inside Dialog Box");
final Dialog dialog = new Dialog(context);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setContentView(R.layout.dialog_date_picker);
dialog.show();
final DatePicker datePicker = (DatePicker) dialog.findViewById(R.id.date_picker);
date_time_set = (Button) dialog.findViewById(R.id.date_time_set);
datePicker.init(mCalendar.get(Calendar.YEAR), mCalendar.get(Calendar.MONTH), mCalendar.get(Calendar.DAY_OF_MONTH), null);
LinearLayout ll = (LinearLayout) datePicker.getChildAt(0);
LinearLayout ll2 = (LinearLayout) ll.getChildAt(0);
ll2.getChildAt(1).setVisibility(View.INVISIBLE);
date_time_set.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View view){
dialog.dismiss();
Integer month = datePicker.getMonth()+1;
Integer year = datePicker.getYear();
expMonth = (month.toString().length() == 1 ? "0"+month.toString():month.toString());
expYear = year.toString();
etExpiryDate.setText(expMonth + "/" + expYear);
}
});
}
This code works and hides the day in a DatePicker, so I can show Expiry Date for Cards. Enjoy!!
Calendar c = Calendar.getInstance();
int mYear = c.get(Calendar.YEAR);
int mMonth = c.get(Calendar.MONTH);
int mDay = c.get(Calendar.DAY_OF_MONTH);
DatePickerDialog datePickerDialog = new DatePickerDialog(getActivity(), AlertDialog.THEME_HOLO_DARK,
new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
txtMonth.setText(dayOfMonth + "-" + (monthOfYear + 1) + "-" + year);
}
}, mYear, mMonth, mDay);
((ViewGroup) datePickerDialog.getDatePicker()).findViewById(Resources.getSystem().getIdentifier("day", "id", "android")).setVisibility(View.GONE);
datePickerDialog.show();
refer this link Disable day selection on datepicker example
