[android-developers] In android custom_toast_layout, layout margin is not working.

I am using the custom toast and in it i am providing layout_margin right but it is not working any suggestion where is the problem.below is the code i am using.

<?xml version="1.0" encoding="utf-8"?>    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:id="@+id/custom_toast_layout_id"  android:layout_width="fill_parent"  android:layout_height="fill_parent"  android:background="#FFF"  android:orientation="horizontal"  android:layout_marginRight="200dip">    <ImageView      android:id="@+id/image"      android:layout_width="wrap_content"      android:layout_height="fill_parent"      android:layout_marginRight="5dp" />    <TextView      android:id="@+id/text"      android:layout_width="wrap_content"      android:layout_height="fill_parent"      android:textColor="#000" />  </LinearLayout>

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