问MyLocation按钮隐藏在透明动作栏后面，如何重新定位？

EN

// Gets the my location button
View myLocationButton = getSherlockActivity().findViewById(R.id.MainContainer).findViewById(2); 

// Checks if we found the my location button        
if (myLocationButton != null){
        int actionBarHeight = 0;
        TypedValue tv = new TypedValue();

           // Checks if the os version has actionbar in it or not
           if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB){
              if (getSherlockActivity().getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true))
                actionBarHeight = TypedValue.complexToDimensionPixelSize(tv.data,getResources().getDisplayMetrics());
           }
           // Before the action bar was added to the api
           else if(getSherlockActivity().getTheme().resolveAttribute(com.actionbarsherlock.R.attr.actionBarSize, tv, true)){
                actionBarHeight = TypedValue.complexToDimensionPixelSize(tv.data,getResources().getDisplayMetrics());
           }

        // Sets the margin of the button
        ViewGroup.MarginLayoutParams marginParams = new ViewGroup.MarginLayoutParams(myLocationButton.getLayoutParams());
        marginParams.setMargins(0, actionBarHeight + 20, 20, 0);
        RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(marginParams);
        layoutParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT, RelativeLayout.TRUE);
        myLocationButton.setLayoutParams(layoutParams);
}