How to reference the EditText inside a NumberPicker?

Question

I need to get the reference to the EditText inside a NumberPicker. I know it's going to be some sort of findViewById on the picker view itself, but I haven't been able to find android's id for it:

final NumberPicker numberPicker = (NumberPicker) view.findViewById(R.id.numberpicker);
EditText numberPickerEditText = (EditText) numberPicker.findViewById(WHAT IS THE ID???)

I know NumberPicker has most of the useful methods for the value etc., but I need some finer control such as displaying the keyboard when the picker opens and I don't think I can do this without a reference to the EditText itself (feel free to correct me if I'm wrong in this!)

Answer 1

If you would look at the xml file being used by the NumberPicker you'll find that the id of the EditText you're looking for is numberpicker_input :

<merge xmlns:android="http://schemas.android.com/apk/res/android">

    <ImageButton android:id="@+id/increment"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="@android:drawable/numberpicker_up_btn"
        android:paddingTop="22dip"
        android:paddingBottom="22dip"
        android:contentDescription="@string/number_picker_increment_button" />

    <EditText
        android:id="@+id/numberpicker_input"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textAppearance="@style/TextAppearance.Large.Inverse.NumberPickerInputText"
        android:gravity="center"
        android:singleLine="true"
        android:background="@drawable/numberpicker_input" />

    <ImageButton android:id="@+id/decrement"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="@android:drawable/numberpicker_down_btn"
        android:paddingTop="22dip"
        android:paddingBottom="22dip"
        android:contentDescription="@string/number_picker_decrement_button" />

</merge>

So, you can do it by using the same id:

NumberPicker numberPicker = (NumberPicker) view.findViewById(R.id.numberpicker);
EditText numberPickerEditText = (EditText) numberPicker.findViewById(R.id.numberpicker_input)

EDIT

Ok, so looks like this id is inside android.internal.id, since it's a system id, to be able to access it you'll have to do this:

numberPicker.findViewById(Resources.getSystem().getIdentifier("numberpicker_input", "id", "android"))