Put two textviews side by side in a layout

why do you need that drawable? option: you can use textview1 with a fixed width and ellipsize the end..:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <TextView
        android:id="@+id/textview1"
        android:layout_width="100dp"
        android:layout_height="wrap_content"
        android:ellipsize="end"
        android:lines="1"
        android:padding="2dp" />


    <TextView
        android:id="@+id/textview2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_toRightOf="@id/textview1"
        android:padding="2dp" />

</RelativeLayout>  

Wrap the two TextViews in a LinearLayout. Assign a layout weight of 0 to textview2 and a layout weight of 1 to textview2.

See here for more info: Linear Layout Weight

If you play with the example below you'll see that the LinearLayout first allocates space to textview2 (with weight 0) and then allocates whatever remains to textview1 (with weight 1). If there is insufficient space to accommodate both TextViews, textview1 will be ellipsized first. In the example below textview2 will only ever become ellipsized if the LinearLayout is smaller than the size of textview2 itself. Assign a specific layout width to the FrameLayout and see what happens.

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="200dp"
    android:layout_height="match_parent" 
    android:background="#FF0000FF">

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="#FFFF0000"
            android:ellipsize="end"
            android:maxLines="1"
            android:text="textview1" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="0"
            android:background="#FF00FF00"
            android:ellipsize="end"
            android:maxLines="1"
            android:text="textview2" />
    </LinearLayout>

</FrameLayout>

<LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >

        <TextView
            android:id="@+id/textView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="TextView"
            android:layout_weight=".50"/>

        <TextView
            android:id="@+id/textView2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="TextView"
            android:layout_weight=".50"/>

    </LinearLayout>