I have the following relative layout code in my Android app:
<RadioGroup
android:id="@+id/selectSound"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/micLevelLabel"
android:checkedButton="@+id/radiohighpitched"
android:layout_marginTop="71dp" >
<RadioButton
android:id="@+id/radiohighpitched"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="High Pitched"
android:textColor="@color/android:white"
/>
<RadioButton
android:id="@+id/radiofoghorn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Fog Horn"
android:textColor="@color/android:white"
/>
<RadioButton
android:id="@+id/radioalarm"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Alert Tone"
android:textColor="@color/android:white" />
</RadioGroup>
<ImageButton
android:id="@+id/imageButton2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/imageButton1"
android:layout_below="@+id/imageButton1"
android:onClick="playTone2"
android:src="@drawable/play_med" />
<ImageButton
android:id="@+id/imageButton3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/imageButton2"
android:layout_below="@+id/imageButton2"
android:onClick="playTone3"
android:src="@drawable/play_med" />
<ImageButton
android:id="@+id/imageButton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/selectSound"
android:layout_toRightOf="@+id/micLevelLabel"
android:onClick="playTone1"
android:src="@drawable/play_med" />
It produces a layout that looks like this:

It just so happens to line up correctly because of the image size of the ImageButtons. I've recently redesigned the app and the ImageButtons on the right hand side no longer line up with the RadioButtons.
Is there a more robust way to construct this layout such that the ImageButtons always align with the corresponding RadioButtons?
