How to display year only in date picker in android

Question

Can anybody tell how to display year only in date picker in android

Thanks

Answer 1

You could also use some simple reflection to hide the day and month NumberPickers of a DatePicker widget. Do note that this may stop working if Google decides to rename the member field names. Also, this approach of course makes sense when using android:datePickerMode="spinner".

// inflate DatePicker, or e.g. get it from a DatePickerDialog:
DatePicker datepicker = ...

// pre-Honeycomb fields: 
findAndHideField(datepicker, "mDayPicker");
findAndHideField(datepicker, "mMonthPicker");

// Honeycomb(+) fields:
findAndHideField(datepicker, "mDaySpinner");
findAndHideField(datepicker, "mMonthSpinner");

// Lollipop(+) fields (wrapped in a delegate):
final Object mDatePickerDelegate = findFieldInstance(picker, "mDelegate");
findAndHideField(mDatePickerDelegate, "mDaySpinner");
findAndHideField(mDatePickerDelegate, "mMonthSpinner");


/** find a member field by given name and hide it */
private static void findAndHideField(Object object, String name) {
    try {
        final Field field = object.getClass().getDeclaredField(name);
        field.setAccessible(true);
        final View fieldInstance = (View) field.get(object);
        fieldInstance.setVisibility(View.GONE);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

/* find a member field by given name and return its instance value */
private static Object findFieldInstance(DatePicker datepicker, String name) {
    try {
        final Field field = DatePicker.class.getDeclaredField(name);
        field.setAccessible(true);
        return field.get(datepicker);
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}

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Update: Added code illustrating how to make this approach work with Android 'Lollipop' 5.0 (API 21+).

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Disclaimer: I cannot stress enough that this is hacky solution that may stop working with any framework update (as it did when Android 3.0 was first introduced, and again with Android 5.0).