This is SlidingMenu patch code to get notice when SlidingMenu is opening.

gistfile1.txt

--- SlidingMenu.java    2013-02-14 13:24:19.000000000 +0900
+++ /tmp/SlidingMenu.java	2013-02-14 13:24:15.000000000 +0900
@@ -86,7 +86,7 @@
 		/**
 		 * On open.
 		 */
-		public void onOpen();
+		public void onOpen(int position);
 	}
 
 	/**
@@ -210,16 +210,19 @@
 		mViewAbove.setCustomViewBehind(mViewBehind);
 		mViewBehind.setCustomViewAbove(mViewAbove);
 		mViewAbove.setOnPageChangeListener(new OnPageChangeListener() {
-			public static final int POSITION_OPEN = 0;
-			public static final int POSITION_CLOSE = 1;
+			public static final int POSITION_LEFT_MENU = 0;
+			public static final int POSITION_CONTENT = 1;
+			public static final int POSITION_RIGHT_MENU = 2;
 
 			public void onPageScrolled(int position, float positionOffset,
 					int positionOffsetPixels) { }
 
 			public void onPageSelected(int position) {
-				if (position == POSITION_OPEN && mOpenListener != null) {
-					mOpenListener.onOpen();
-				} else if (position == POSITION_CLOSE && mCloseListener != null) {
+				if (position == POSITION_LEFT_MENU && mOpenListener != null) {
+					mOpenListener.onOpen(position);
+				} else if (position == POSITION_RIGHT_MENU && mOpenListener != null) {
+					mOpenListener.onOpen(position);
+				} else if (position == POSITION_CONTENT && mCloseListener != null) {
 					mCloseListener.onClose();
 				}
 			}