question: public void changeViewPosition ( View child , int newIndex ) { int currentIndex = indexOfChild ( child ) ; if ( child != null && child . getParent ( ) == this && currentIndex != newIndex ) { mChangePositionInProgress = true ; removeView ( child ) ; addView ( child , newIndex ) ; mChangePositionInProgress = false ; if ( mIsExpanded && mAnimationsEnabled && child . getVisibility ( ) != View . GONE ) { mChildrenChangingPositions . add ( child ) ; mNeedsAnimation = true ; } } }
target:  Change the position of child to a new location