I used a style file to set a unique style for same layouts,
Style:
<resources xmlns:android="http://schemas.android.com/apk/res/android">
   <!-- User form layout style -->
   <style name="UserFormLayoutRow">
    <item name="android:layout_width">match_parent</item>
    <item name="android:layout_height">wrap_content</item>
    <item name="android:orientation">horizontal</item>
    <item name="android:paddingBottom">@dimen/padding_small</item>
   </style>
</resources >
//In layout file
 <LinearLayout
   style="@style/UserFormLayoutRow" >
         //contents
 </LinearLayout>
Error:(design time)

Error at run time:
06-13 05:58:14.506: E/AndroidRuntime(936): Caused by: java.lang.RuntimeException: Binary XML file line #105: You must supply a layout_width attribute.
Where i am going wrong? TIA