<TableRow>
            <ImageView
                android:id="@+id/main_setting_button"
                android:layout_width="129dp"
                android:layout_height="129dp"
                android:src="@drawable/main_setting_selector"
                android:layout_margin="5dp"
                android:scaleType="fitXY">
            </ImageView>
            <ImageView
                android:id="@+id/main_help_button"
                android:layout_width="129dp"
                android:layout_height="129dp"
                android:src="@drawable/main_help_selector"
                android:layout_margin="5dp"
                android:scaleType="fitXY">
            </ImageView>
        </TableRow>        

main_help_selector.xml
 <?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
  <item
      android:state_pressed="true"
      android:drawable="@drawable/main_help_pressed">
  </item>
  <item
      android:drawable="@drawable/main_help">
  </item>    
</selector>

main_setting_selector.xml
 <?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
  <item
      android:state_pressed="true"
      android:drawable="@drawable/main_setting_pressed">
  </item>
  <item
      android:drawable="@drawable/main_setting">
  </item>  
</selector>

Layout과 Selector 2개 순서입니다. 위와같이 작성하였을때, 디폴트 이미지만 보일뿐 Pressed 상태일때 이미지가 바뀌지 않습니다. 혹시나해서 ImageButton으로 바꿔서 해봤지만 여전히 동작하지 않습니다.

많은분들의 가르침 부탁드립니다.