Can't get theme attribute references to work in android

Question

Hi, I'm very new (second day!) to android and working my way through the dev guide. There, it says that you can reference attributes inside the current theme from your XML by using the form "?...", for example

<?xml version="1.0" encoding="utf-8"?>
<EditText id="text"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent" android:layout_height="fill_parent"
    android:textColor="?android:textDisabledColor"
    android:text="@string/hello_world" />

If I try to build this, I just get "No resource found that matches the given name (at 'textColor' with value '?android:textDisabledColor')

Given that this seems pretty basic stuff, and yet I can't find any references to similar problems elsewhere, I must be missing something obvious or misunderstanding something simple. Can anyone tell me what it is?

Answer 1

try android:textColor="?android:attr/textDisabledColor"