How to right align widget in horizontal linear layout Android?

Question

This is the code I am using and it is not working:

Answer 1

In case with TextView:

<TextView 
    android:text="TextView" 
    android:id="@+id/textView"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"   
    android:gravity="right"
    android:textAlignment="gravity">    
</TextView>