Updated readme

README.md

@@ -27,7 +27,6 @@ Add this to proguard rules, otherwise animations won't work correctly
     -keep class com.woxthebox.draglistview.** { *; }
 
 ## Usage
-**NOTE: The adapter must use stable ids.
 List and Grid layouts are used as example in the sample project.
 
   For list and grid view use the DragListView.
@@ -203,10 +202,16 @@ List and Grid layouts are used as example in the sample project.
         mLayoutId = layoutId;
         mGrabHandleId = grabHandleId;
         mDragOnLongPress = dragOnLongPress;
-        setHasStableIds(true);
         setItemList(list);
     }
 
+  The adapter must provide unique ids for each item with the implementation of the abstract method below.
+
+    /**
+     * @return a unique id for an item at the specific position.
+     */
+     public abstract long getUniqueItemId(int position);
+
   Your ViewHolder should extend DragItemAdapter.ViewHolder and you must supply an id of the view that should respond to a drag.
   You also need to provide a boolean to the super constructor to decide if you want the drag to happen on long press or directly when touching the item.
   If you want to respond to clicks, long clicks or touch events on the itemView root layout you should not set your own click listeners.