ImageViews taking a lot space than its need (XML)

I want to show ImageView side-by-side in HorizontalScrollView like android markets. I'm having problem with the space taking by ImageView' inside theLinearLayout`, here what I'm getting: images separated by long uncontrolled spaces.

I want it to be like this:

Here the xml code for this row:

    <TableRow
    android:id="@+id/tableRow2"
    android:layout_width="wrap_content"
    android:layout_height="250dp"
     android:background="#afafafaf" >

         <HorizontalScrollView 
           android:layout_width="wrap_content"  
           android:layout_height="wrap_content">  

              <LinearLayout android:id="@+id/_linearLayout"  
               android:layout_width="wrap_content"  
               android:layout_height="wrap_content"  
               android:orientation="horizontal"
               android:gravity="center">  

                 <ImageView android:id="@+id/_image"   
                   android:layout_width="wrap_content"   
                   android:layout_height="wrap_content"
                   android:layout_marginTop="10dp"
                   android:background="#000000"
                   android:src="@drawable/icon_2"
                                            />   
                  <ImageView android:id="@+id/_image"   
                  android:layout_width="wrap_content"   
                  android:layout_height="wrap_content"
                  android:layout_marginTop="10dp"
                  android:background="#000000"
                  android:src="@drawable/icon_2"
                                            />   

             </LinearLayout>  

       </HorizontalScrollView>  


  </TableRow>