How do I prevent an EditText from resizing itself when the user is typing?

I have an EditText and a Button set next to each other on the same horizontal line. It looks great, except when the user enters a lot of text, the EditText is resized, and the Button is squished.

I have both EditText and Button set to layout_width="wrap_content". "fill_parent" messes up the layout, and I don't want to use absolute sizes if I don't have to - the way it is now looks great in both landscape and portrait, I just don't want the EditText to resize.

My layout:

<TableLayout
    android:id="@+id/homelayout"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <TableRow>
        <TextView
            android:id="@+id/labelartist"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Find artists:" />
    </TableRow>
    <TableRow>
        <EditText
            android:id="@+id/entryartist"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="6"
            android:background="@android:drawable/editbox_background"
            android:editable="true"
            android:padding="5px"
            android:singleLine="true" />
        <Button
            android:id="@+id/okartist"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:layout_marginLeft="10dip"
            android:layout_weight="1"
            android:text="Search" />
    </TableRow>

</TableLayout>