为Flex Tree控件构造树形结构数据
将数据库里查出来的列表结构转为树形结构的ArrayCollection,需要数据有id字段(可以不叫id),parent项(对应父节点id),有children项(实现ITreeData接口)。
示例:
var ac:ArrayCollection = new ArrayCollection();var d1:Department = new Department();d1.id = "1";d1.name = "校";var d2:Department = new Department();d2.id = "2";d2.name = "班1";d2.parent = "1";var d3:Department = new Department();d3.id = "3";d3.name = "班2";d3.parent = "1";var d4:Department = new Department();d4.id = "4";d4.name = "生1";d4.parent = "2";var d5:Department = new Department();d5.id = "5";d5.name = "生2";d5.parent = "2";ac.addItem(d1);ac.addItem(d2);ac.addItem(d3);ac.addItem(d4);ac.addItem(d5);var td:ArrayCollection = TreeDataCreator.toTreeAC(ac);trace(td);