android ExpandableListView position - packPostion - group/childposition

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ExpandableListView 的位置对应关系绝对位置 flatPosition 就是scroll 时对应的位置

要转化成对应的 group child position

packPosition=ExpandableListView . getExpandableListPosition(flatPosition );

//判断位置类型是group 还是child

ExpandableListView.getPackedPositionType(packPosition) == ExpandableListView.PACKED_POSITION_TYPE_GROUP

ExpandableListView.getPackedPositionType(packPosition) == ExpandableListView.PACKED_POSITION_TYPE_CHILD

ExpandableListView.getPackedPositionType(packPosition) == ExpandableListView.PACKED_POSITION_TYPE_NULL

groupPosition = ExpandableListView.getPackedPositionGroup(packPosition);// group节点位置
childPosition = ExpandableListView.getPackedPositionChild(packPosition);// child节点位置

逆向转换

getFlatListPosition(ExpandableListView.getPackedPositionForChild(groupPosition, childPosition)))

就能得到绝对位置