if (expandGroup(position)) { if (expandListener != null) { expandListener.onGroupExpand(position, fromUser, null);
/*package*/ boolean expandGroup(int groupPosition, boolean fromUser, Object payload) { if (mPositionTranslator.isGroupExpanded(groupPosition)) { return false; } // call hook method if (!mExpandableItemAdapter.onHookGroupExpand(groupPosition, fromUser, payload)) { return false; } if (mPositionTranslator.expandGroup(groupPosition)) { final long packedPosition = ExpandableAdapterHelper.getPackedPositionForGroup(groupPosition); final int flatPosition = mPositionTranslator.getFlatPosition(packedPosition); final int childCount = mPositionTranslator.getChildCount(groupPosition); notifyItemRangeInserted(flatPosition + 1, childCount); } { final long packedPosition = ExpandableAdapterHelper.getPackedPositionForGroup(groupPosition); final int flatPosition = mPositionTranslator.getFlatPosition(packedPosition); notifyItemChanged(flatPosition, payload); } // raise onGroupExpand() event if (mOnGroupExpandListener != null) { mOnGroupExpandListener.onGroupExpand(groupPosition, fromUser, payload); } return true; }
private void raiseOnGroupExpandedSequentially(int groupPositionStart, int count, boolean fromUser, Object payload) { if (mOnGroupExpandListener != null) { for (int i = 0; i < count; i++) { mOnGroupExpandListener.onGroupExpand(groupPositionStart + i, fromUser, payload); } } }