Android layout - making certain objects expandable

Question

Given a horizontal LinearLayout in Android, I'd like to create:

(1) a textbox which fills nearly the width of the screen, except leaving enough space for...

(2) a button on the right

So I create an EditText and a Button and they're both very small.

 <LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content">
 <EditText android:text="" 
   android:id="@+id/Text01"
   android:layout_height="wrap_content"
   android:layout_width="wrap_content">
 </EditText>
 <Button android:text="+"
   android:id="@+id/Button01"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_gravity="right">
 </Button>
 </LinearLayout>

I can't set the EditText to android:layout_width="fill_parent" otherwise it would obliterate the button. So how to make the EditText expand as much as it can?

Answer 1

<?xml version="1.0" encoding="utf-8"?>
 <LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content">
 <EditText android:text="" 
   android:id="@+id/Text01"
   android:layout_height="wrap_content"
    android:layout_width="0dip"
   android:layout_weight="1">
 </EditText>
 <Button android:text="+"
   android:id="@+id/Button01"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_gravity="right">
 </Button>
 </LinearLayout>